Recent Questions - MathOverflow Metamost recent 30 from meta.mathoverflow.net2022-11-28T18:07:16Zhttps://meta.mathoverflow.net/feedshttps://creativecommons.org/licenses/by-sa/4.0/rdfhttps://meta.mathoverflow.net/q/55133Integral sign cut off in SafariLSpicehttps://meta.mathoverflow.net/users/23832022-11-25T05:35:13Z2022-11-25T17:12:09Z
<p>I am using Safari version 16.1 with the HTML-CSS renderer. A displayed formula in the post <a href="https://mathoverflow.net/questions/435270/convergence-by-parameter-involving-inf">Convergence by parameter involving inf</a> renders as follows:</p>
<p><a href="https://i.stack.imgur.com/9abDg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9abDg.png" alt="Integral sign is cut off" /></a></p>
<p>This happens even with extensions disabled, but only when I am logged in; if I log out and view the same page, it does not render cut off like this. It also does not happen with other renderers, or in Firefox, even if I am logged in.</p>
<p>@GeraldEdgar <a href="https://meta.mathoverflow.net/questions/5513/integral-sign-cut-off-in-safari/5514#comment28018_5514">points out</a> an MMSE post <a href="https://math.meta.stackexchange.com/q/12179">Integral signs not being rendered correctly</a> describing the same problem, 8 years ago.</p>
https://meta.mathoverflow.net/q/55114Occasional "echoed" usernames in Firefoxმამუკა ჯიბლაძეhttps://meta.mathoverflow.net/users/412912022-11-23T19:30:06Z2022-11-24T05:16:45Z
<p>I noticed about a month ago that quite often in the latest version of Firefox (but not in Chrome) under Windows 11 usernames become distorted like this</p>
<p><a href="https://i.stack.imgur.com/vXZuJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vXZuJ.png" alt="enter image description here" /></a></p>
<p>Does anybody else see this or it is just me?</p>
<p><strong>Later</strong> - following suggestions in comments, I looked into that user's page and there I see this:</p>
<p><a href="https://i.stack.imgur.com/sfoHk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sfoHk.png" alt="enter image description here" /></a></p>
https://meta.mathoverflow.net/q/55085Did mathcal stop working properly?Sam Hopkinshttps://meta.mathoverflow.net/users/250282022-11-19T21:17:20Z2022-11-21T14:05:09Z
<p>Does this question <a href="https://mathoverflow.net/questions/434710">Basic algebra of $\mathcal{O}_0(\mathfrak{sl}_n(\mathbb{C}))$ — Reference request</a> look like this for anyone else?:</p>
<p><a href="https://i.stack.imgur.com/akC4N.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/akC4N.png" alt="enter image description here" /></a></p>
<p>Those squares are supposed to be \mathcal{O}'s. As far as I can tell the LaTeX code is fine but it is rendering wrong for some reason. I remember looking at this question a couple days ago and it looked fine.</p>
<p>EDIT: Maybe I should say I'm on Chrome on a Mac.</p>
<p>EDIT 2: Changing the math renderer (as mentioned in the comments) fixed this for me; thanks!</p>
https://meta.mathoverflow.net/q/55034What is a supported use of \hfill?LSpicehttps://meta.mathoverflow.net/users/23832022-11-08T03:13:47Z2022-11-08T10:45:31Z
<p>According to <a href="https://docs.mathjax.org/en/latest/input/tex/macros/#h" rel="nofollow noreferrer">Supported TeX/LaTeX commands</a>, <code>\hfill</code> is supported. However, as expected, it doesn't work in ordinary text \hfill ; and using it in math mode seems to produce "Unsupported use of \hfill" in inline mode <span class="math-container">$\hfill$</span> or in display mode <span class="math-container">$$\hfill .$$</span> What is a supported use of <code>\hfill</code>?</p>
<p>(EDIT: I see "Unsupported use of \hfill" while authoring the post, but, on rendering, it seems to become just the word "\hfill" in an <code>\fbox</code>.)</p>
https://meta.mathoverflow.net/q/55029New tag for "stochastic partial differential equations" (SPDEs)Thomas Kojarhttps://meta.mathoverflow.net/users/998632022-11-07T19:28:02Z2022-11-10T06:53:48Z
<p>Since there are separate tags for a) ODEs, <a href="https://mathoverflow.net/questions/tagged/ca.classical-analysis-and-odes" class="post-tag" title="show questions tagged 'ca.classical-analysis-and-odes'" aria-label="show questions tagged 'ca.classical-analysis-and-odes'" rel="tag" aria-labelledby="ca.classical-analysis-and-odes-container">ca.classical-analysis-and-odes</a> and <a href="https://mathoverflow.net/questions/tagged/differential-equations" class="post-tag" title="show questions tagged 'differential-equations'" aria-label="show questions tagged 'differential-equations'" rel="tag" aria-labelledby="differential-equations-container">differential-equations</a> and for b) <a href="https://mathoverflow.net/questions/tagged/ap.analysis-of-pdes" class="post-tag" title="show questions tagged 'ap.analysis-of-pdes'" aria-label="show questions tagged 'ap.analysis-of-pdes'" rel="tag" aria-labelledby="ap.analysis-of-pdes-container">ap.analysis-of-pdes</a> but only one tag for <a href="https://mathoverflow.net/questions/tagged/stochastic-differential-equations" class="post-tag" title="show questions tagged 'stochastic-differential-equations'" aria-label="show questions tagged 'stochastic-differential-equations'" rel="tag" aria-labelledby="stochastic-differential-equations-container">stochastic-differential-equations</a>, I was wondering if it is worth creating a new tag called "stochastic partial differential equations".</p>
<p>This is to accommodate the topics found in SPDE books such as Da-Prato and Zabczyk's book "<a href="https://doi.org/10.1017/CBO9781107295513" rel="nofollow noreferrer">Stochastic equations in infinite dimensions</a>".</p>
<ul>
<li>Equations with additive noise or multiplicative noise</li>
<li>Martingale solutions</li>
<li>Large time behavior of solutions</li>
<li>Small noise asymptotic behavior</li>
</ul>
<p>and many new emerging topics such as</p>
<ul>
<li>Regularity structures</li>
<li>Paracontrolled calculus</li>
<li>Rough paths (which already has it own tag <a href="https://mathoverflow.net/questions/tagged/rough-paths" class="post-tag" title="show questions tagged 'rough-paths'" aria-label="show questions tagged 'rough-paths'" rel="tag" aria-labelledby="rough-paths-container">rough-paths</a>).</li>
</ul>
https://meta.mathoverflow.net/q/55007Interesting question deleted by author — how to reach out to author to ask to undelete?Alison Millerhttps://meta.mathoverflow.net/users/4222022-11-07T13:11:35Z2022-11-09T02:30:35Z
<p><a href="https://mathoverflow.net/questions/434028">"Coloring Gaussian integers based on a numeral system based on powers of <span class="math-container">$-1+i$</span>"</a> was an interesting question that was recently asked. I left a comment with some relevant keywords and links (I didn't make it an answer because I was hoping that someone more familiar with the area could say more!). The question author replied to my comment to thank me and the question was subsequently deleted — I assume the author took my response in a comment as an indication that the question wasn't MO-level, which is not what I meant at all!</p>
<p>I'd like to reach out to the author and suggest undeleting the question, but at this point I've forgotten who the author is and have no way of determining it as the question has vanished without a trace (I can see the reply comment in my inbox but it doesn't say whom it was from!).</p>
<p>Can the MO moderators reach out to the author of this post and ask him to undelete? (Or possibly undelete the post directly if that's appropriate.)</p>
https://meta.mathoverflow.net/q/54992Facebook and Twitter links disappear ungracefullyLSpicehttps://meta.mathoverflow.net/users/23832022-11-05T19:53:43Z2022-11-06T11:10:10Z
<p>I am using Safari 16.1 on macOS 12.6. The invitation to "Share a link to this question" appears for me like this:</p>
<p><a href="https://i.stack.imgur.com/6GIOJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6GIOJ.png" alt="Share a link to this question via email, , or ." /></a></p>
<p>I assume that the Twitter and Facebook links are not showing because of some ad-blocking extension, and I'm fine with that, but, if the links are going to disappear in the presence of ad-blocking, it seems like it might be desireable to try to degrade gracefully to something like "Share a link to this question via email."</p>
<p>As @AsafKaragila <a href="https://meta.mathoverflow.net/questions/5499/facebook-and-twitter-links-disappear-ungracefully#comment27959_5499">points out</a>, this is in no way MO-specific, but I have understood SO-wide bug reports to be acceptable here on MMO. Though this is not a bug in the sense of a coding error, I thought it was surely a bug in the sense that it was unexpected behaviour. However, as @MartinSleziak <a href="https://chat.stackexchange.com/transcript/message/62322210#62322210">points out</a> in chat, this issue has been known at least since 2013 (see <a href="https://meta.stackexchange.com/questions/214355/know-someone-who-can-answer-share-list-broken">Know someone who can answer? Share list broken</a>, which has a <a href="https://meta.stackexchange.com/a/214356">staff response</a>, and its <a href="https://meta.stackexchange.com/questions/linked/214355">linked questions</a>), so I guess by this point it should be regarded as expected behaviour.</p>
https://meta.mathoverflow.net/q/54972Why is this question locked?Steven Landsburghttps://meta.mathoverflow.net/users/105032022-10-30T14:38:02Z2022-10-30T14:56:31Z
<p><a href="https://mathoverflow.net/questions/433528/check-if-f2r%e2%86%921-%e2%88%9e-where-fx-x21-is-injective-function-or-not">This question</a> has only two downvotes, which is not enough to keep it off the front page. I'd therefore like to downvote it, but can't, because it is locked for mysterious reasons.</p>
<p>Because this does not seem to fit of any sort of new pattern, my best guess is that the question is locked because a moderator clicked something by mistake. But I'm curious whether there's a deeper explanation.</p>
https://meta.mathoverflow.net/q/5494-5Where did the reputation go?Alex M.https://meta.mathoverflow.net/users/547802022-10-29T08:02:45Z2022-10-30T10:38:45Z
<p>Some time ago, it was decided that reputation should no longer be displayed by default, but users had the possibility to opt in to see it, <a href="https://meta.mathoverflow.net/q/5218">as explained by Ben Webster</a>. I had opted to see reputation, but today I have just noticed that it is gone! Gone is also the "show rep" link in the achievements menu. Are the moderators making changes to the site <a href="https://meta.mathoverflow.net/questions/5209/reputation-and-badges-are-no-longer-visible-next-to-the-users-names#comment26733_5211">again without consulting with and informing the community</a>?</p>
<p>(It is interesting to remark that even the most open and democratic people tend to become dictatorial when they get into positions of power.)</p>
https://meta.mathoverflow.net/q/548314Why was my question deleted?Vepirhttps://meta.mathoverflow.net/users/885242022-10-18T11:54:55Z2022-10-18T15:05:13Z
<p>Why was my question <a href="https://mathoverflow.net/q/370694/88524">Is the Frog game solvable in the root of a full binary tree?</a> deleted?</p>
<p>It was a cross-post, but I followed all <a href="https://meta.mathoverflow.net/a/5013/88524">recommended advices</a> when doing so.</p>
<p>It was also decently upvoted (12+).</p>
<p>It was fine for 2 years, but now it is suddenly deleted.</p>
<p>I'm really confused.</p>
<p>I wanted to suggest undeletion, but it says it was deleted by a moderator.</p>
https://meta.mathoverflow.net/q/54824Migrated question returned to MO - how to handle?Yemon Choihttps://meta.mathoverflow.net/users/7632022-10-15T19:54:25Z2022-10-30T05:57:37Z
<p>The question I am referring to is
<a href="https://mathoverflow.net/questions/431824/is-all-complicated-modern-math-intuitively-understandable">Is all complicated modern math intuitively understandable?</a></p>
<p>(See the <a href="https://math.stackexchange.com/users/1103802/mattias-s">user's math.SE account</a> to see that the question was at one point migrated to math.SE.)</p>
<p>I think the question, while perfectly genuine, is not really suitable for MathOverflow because given the user's admitted inexperience I don't think they are in a position to appreciate what "complicated UG math" looks like, let alone "complicated modern math". On the other hand, if the math.SE community or moderators deem it unsuitable for math.SE, then they are perfectly entitled to pass the hot potato back to us.</p>
<p>Suggestions for concrete actions would be welcome (rather than broad debates about the OP's question, mission of MO, "intuition", "proof", etc.) Of course "no need to do anything" is a perfectly valid suggestion.</p>
https://meta.mathoverflow.net/q/5481-5If it doesn't interest you, don't read it!Mahdi Majidi-Zolbaninhttps://meta.mathoverflow.net/users/160462022-10-15T18:51:05Z2022-10-26T03:50:02Z
<p>As an algebraist, if I see an analysis question on Mathoverflow that falls outside my expertise, I probably won't read it in details, and if I do read it, I certainly won't judge its "level", because I don't consider myself an expert in analysis. I would assume most people act similarly. However, post a question on the topic of Mathematics Education, and suddenly <em>everyone</em> becomes an expert in Mathematics Education! Questions in Mathematics Education could be very subtle. Just because someone teaches mathematics, it doesn't make them experts in Mathematics Education. Probably many of those who become a Mathematics Education expert as soon as they see a question on that topic, don't have any interest in Mathematics Education, have never faced the challenges of teaching elementary mathematics, or have not thought about possible solutions to such challenges.</p>
<p>Yesterday I posted a question tagged Mathematics Education. It was quickly closed. It was judged to be more appropriate for Stack Exchange Mathematics Educators. One person commented that it was not a research level question. Another person started acting up and making irrelevant and off topic comments. Interestingly, nobody attempted to answer the question itself! These people did not have any knowledge on the topic of the question. In fact, the topic <em>is</em> a research level question in Mathematics Education and the very fact that someone says it is not, shows they have no information about the topic. I like to assume that if a question does not interest someone, they can just skip it without feeling any urge for making hasty comments under the question.</p>
<p>The question that I asked was related to Mathematical Maturity. If you try to search the literature in Mathematics Education for Mathematical Maturity you will not find much. Of course you will find the Wikipedia page and a few blogs related to it, but not many research papers. In fact, I only know of an article named <em>Developing Mathematical Maturity</em> by Lynn Steen (1983) in: The Future of College Mathematics (pp. 99-110), Springer, New York, NY. But the topic is important enough that Terrence Tao and Bill Thurston have written about it. While the phrase Mathematical Maturity does not directly appear in their writings, one can argue that Tao's blog post <em><a href="https://terrytao.wordpress.com/career-advice/theres-more-to-mathematics-than-rigour-and-proofs/" rel="nofollow noreferrer">There is more to mathematics than rigour and proofs</a></em> and Thurston's <em><a href="https://arxiv.org/pdf/math/9404236.pdf" rel="nofollow noreferrer">On proof and progress in Mathematics</a></em> address Mathematical Maturity, among other things.</p>
<p>Why is Mathematical Maturity important? We often expect our Calculus III students to be "better" than our Pre-Calculus students in learning mathematics. One can argue that by "better" we mean mathematically more mature. Consequently, one way to see whether our Pre-Calculus to Calculus III sequence is working properly or not, is to look at students' development of Mathematical Maturity from Pre-Calculus to Calculus III. Of course, one may say if students passed their Calculus courses, it means they learned, so why do we need to monitor their development of Mathematical Maturity? But those of you who know something about teaching Calculus, know that just because students pass a course doesn't mean they learned it. I submit that a successful Calculus program is one that develops students' Mathematical Maturity by as much as possible.</p>
<p>While there is no universal definition for Mathematical Maturity, mathematicians have been using the phrase. The situation reminds me of notions such as <em>naturality</em> or <em>moduli space</em> that were used by mathematicians before they had a formal definition. In the case of naturality, MacLane and Eilenberg captured its definition by introducing the notion of natural transformations of functors. Therefore, being able to provide a universally agreeable definition of Mathematical Maturity is a research level question in Mathematical Education, although, that was not what my post was about. Another challenge is to have tools for measuring the development of Mathematical Maturity from Pre-Calculus to Calculus III.
But who can address these questions about Mathematical Maturity? I would like to argue that one has to be a mathematician to know what Mathematical Maturity means. Terrence Tao would know more about Mathematical Maturity. Bill Thurston would know more about Mathematical Maturity. Mathematicians are the ones who know about Mathematical Maturity. And this is why my question is <em>not</em> more appropriate for Stack Exchange Mathematics Educators, but appropriate for Mathoverflow, for mathematicians to respond to it (of course, only if the topic interests them). To my point, I recommend reading the report <em><a href="http://sigmaa.maa.org/rume/crume2019/Papers/106.pdf" rel="nofollow noreferrer">How Do Mathematicians Describe Mathematical Maturity?</a></em> by Kristen Lew, who is a mathematics educator. What do mathematics educators do when they want to research Mathematical Maturity? They interview mathematicians!! Interestingly, she found that none of the four applied mathematicians whom she interviewed had used or knew of the phrase Mathematical Maturity.</p>
<p>I would like to repost my question on Mathoverflow (which I deleted after it was closed), but I don't want it to get closed again! I am posting here in meta, with enough explanation for why I think my question should be on Mathoverflow rather than Mathematics Educators, to see if there is enough supporting opinion to keep my question open, if I repost. I don't understand the "anger" toward such questions that some people exhibit! I find it very unwelcoming and I think this is an issue that Mathoverflow personnel should address. Make the environment more welcoming.</p>
https://meta.mathoverflow.net/q/547711What to do with the erdos tag?François G. Doraishttps://meta.mathoverflow.net/users/20002022-10-14T01:04:30Z2022-10-18T18:36:27Z
<p>This was <a href="https://meta.mathoverflow.net/questions/2094/should-we-create-an-erd%C5%91s-tag">discussed before</a> but that discussion is outdated.</p>
<p>Tags related to a specific person are generally bad. (This is not the same as specific topics named after a person, e.g. Galois theory is not really about Évariste Galois.) Some exceptions can still make sense, <a href="https://en.wikipedia.org/wiki/Paul_Erd%C5%91s" rel="nofollow noreferrer">Paul Erdős</a> is certainly a strong candidate for such an exception.</p>
<p>Whether or not this is a good idea, the tag <a href="https://mathoverflow.net/questions/tagged/erdos" class="post-tag" title="show questions tagged 'erdos'" aria-label="show questions tagged 'erdos'" rel="tag" aria-labelledby="erdos-container">erdos</a> does exist with 31 questions and no usage guidance.</p>
<p>What should we do with it:</p>
<ul>
<li>Leave as is? (And explain how it should be used!)</li>
<li>Rename to <code>erdos-problems</code> or similar? Perhaps multiple related tags?</li>
<li>Eliminate the tag entirely?</li>
</ul>
https://meta.mathoverflow.net/q/5472462022 Election results: Congratulations to our new moderator!Asaf Karagilahttps://meta.mathoverflow.net/users/72062022-10-04T20:20:28Z2022-10-12T09:47:06Z
<p>The <a href="https://mathoverflow.net/election/3">election</a> is over, the <a href="https://www.opavote.com/results/6571069153476608" rel="nofollow noreferrer">votes have been counted</a>, and on behalf of the current team and board, I'd like to welcome <a href="https://mathoverflow.net/users/4177/david-roberts">David Roberts</a> to the <a href="https://mathoverflow.net/users?tab=moderators">moderators team</a>!</p>
<p><a href="https://mathoverflow.net/users/4177/david-roberts"><img src="https://mathoverflow.net/users/flair/4177.png" width="208" height="58" alt="profile for David Roberts at MathOverflow, Q&A for professional mathematicians" title="profile for David Roberts at MathOverflow, Q&A for professional mathematicians"></a></p>
<p>I'd like to thank <a href="https://mathoverflow.net/users/120914/carl-fredrik-nyberg-brodda">Carl-Fredrik Nyberg-Brodda</a> and to everyone who participated in this election, one way or another!</p>
https://meta.mathoverflow.net/q/546914Which questions should be tagged “reference-request”?Matt F.https://meta.mathoverflow.net/users/441432022-09-25T17:56:28Z2022-10-03T04:17:20Z
<p>The <a href="https://mathoverflow.net/questions/tagged/reference-request" class="post-tag" title="show questions tagged 'reference-request'" aria-label="show questions tagged 'reference-request'" rel="tag" aria-labelledby="reference-request-container">reference-request</a> tag is currently described as: “this tag is used if a reference is needed in a paper or textbook on a specific result.”</p>
<p>I have found current usage of this tag too broad to be meaningful (and therefore liked François Dorais’s <a href="https://meta.mathoverflow.net/a/5442/44143">question</a> about tag issues). In particular,</p>
<ul>
<li>if this tag applies to any post that says “references welcome”…</li>
<li>if this tag applies whenever someone does not know if good references exist…</li>
<li>if this tag applies to any question which might be well answered by an existing reference…</li>
</ul>
<p>then it applies to almost all questions, and is not useful. Nonetheless the tag is often used for these reasons.</p>
<p>I propose to redefine this tag more specifically about requests for <em>references</em> as opposed to requests for <em>mathematical results</em>:</p>
<blockquote>
<p>Requests for references on results which are already known to the
person asking the question, e.g.:</p>
<ul>
<li>results which have been used elsewhere without comment,</li>
<li>results which seem like simpler variants of results elsewhere,</li>
<li>results which you have proved and suspect have been proved elsewhere.</li>
</ul>
</blockquote>
<p>Would other people here want to describe the tag like this? And if so, how might we remove the incompatible prior uses of the tag? Or would others have comments in favor of the current description, or other proposals?</p>
https://meta.mathoverflow.net/q/54673Edit history lost on migrationLSpicehttps://meta.mathoverflow.net/users/23832022-09-25T08:57:37Z2022-09-25T12:21:58Z
<p>According to <a href="https://math.stackexchange.com/questions/4538387/notation-about-n-choose-k-permutations/4538388#comment9541109_4538388">a comment</a>, @Marco's <a href="https://math.stackexchange.com/a/4538388">answer</a> to <a href="https://math.stackexchange.com/questions/4538387/notation-about-n-choose-k-permutations">Notation about n choose k permutations</a> was edited before migration. However, nothing displays in the <a href="https://math.stackexchange.com/posts/4538388/revisions">edit history</a>. (This seems appropriate to ask here since the original post, and the edit, happened on MO, but I have no objection to migrating to MMSE if that's more appropriate.)</p>
https://meta.mathoverflow.net/q/545719Nominating other community membersAlec Rheahttps://meta.mathoverflow.net/users/921642022-09-20T17:44:15Z2022-10-04T19:46:52Z
<blockquote>
<p>Is there no mechanism to suggest other community members for nomination?</p>
</blockquote>
<p>If I remember correctly, last election there was some mechanism in place to suggest community members other than ourselves who we thought had the right stuff for moderation. I can't seem to find any appropriate place to do so this election cycle; am I just missing it, misremembering the last election, or was this intentionally changed?</p>
<hr />
<p>EDIT: In response to Asaf's <a href="https://meta.mathoverflow.net/questions/5457/nominating-other-community-members#comment27696_5457">comment</a> that the mechanism last cycle was informal, consider this post the new informal mechanism — if there are any community members you believe have the right stuff to moderate MathOverflow in the coming years, post your suggestions here!</p>
https://meta.mathoverflow.net/q/545472022 Community Moderator ElectionCommunityhttps://meta.mathoverflow.net/users/-12022-09-19T20:01:33Z2022-10-08T14:44:33Z
<p>The 2022 Community Moderator Election is now underway!</p>
<p>Community moderator elections have three phases:</p>
<ol>
<li>Nomination phase</li>
<li>Primary phase</li>
<li>Election phase</li>
</ol>
<p>Most elections take between two and three weeks, but this depends on how many candidates there are.</p>
<p>Please visit the official election page at</p>
<p><a href="https://mathoverflow.net/election">https://mathoverflow.net/election</a></p>
<p>for more detail, and to participate!</p>
<p>If you have general questions about the election process, or questions for moderator candidates, feel free to ask them here on meta -- just make sure your questions are tagged <a href="/questions/tagged/election" class="post-tag" title="show questions tagged 'election'" aria-label="show questions tagged 'election'" rel="tag" aria-labelledby="election-container">election</a>.</p>
https://meta.mathoverflow.net/q/544617MathOverflow conferencesAlec Rheahttps://meta.mathoverflow.net/users/921642022-09-15T21:05:40Z2022-09-27T00:28:42Z
<blockquote>
<p>What would the appropriate initial steps be to host a MathOverflow conference?</p>
</blockquote>
<p>Back in 2019 I <a href="https://meta.mathoverflow.net/a/4355/92164">hosted</a> a party for the 10th anniversary of MathOverflow, and it was a blast.<span class="math-container">$^*$</span> Since then I've ruminated on the possibility of hosting larger 'MathOverflow' conferences, and this post represents the first real effort toward that goal.</p>
<p>Obviously it would be possible to 'just do it', i.e. pick a venue and begin sending out invitations, but this seems suboptimal for several reasons.</p>
<ol>
<li><p>I have no idea how (un)popular the idea is.</p>
</li>
<li><p>I have no idea if I'll run into any legal issues with Stack Exchange or MO by representing the conference as an 'official' MathOverflow conference.</p>
</li>
<li><p>I would like many aspects of the conference to be 'crowdsourced' from MathOverflow, for example:</p>
</li>
</ol>
<ul>
<li>the main mathematical fields of the conference,</li>
<li>the invited speaker list,</li>
<li>the event itinerary,</li>
<li>the overall goal of the conference, etc.</li>
</ul>
<ol start="4">
<li>I would ideally like to have some 'big names' on board. I'm comfortable with my standing on site, but outside of various online communities and my undergrad university I have no presence in the mathematical community whatsoever. This makes me doubt that anyone outside the existing MO pool would look twice at a speaking invitation from me or an advertisement with my name on it, but there are regular participants here who are highly respected and esteemed in the mathematical community at large -- if any of this pantheon finds the idea of a MathOverflow conference interesting and becomes involved in its planning, the potential scope of mathematicians interested in attending broadens greatly.</li>
</ol>
<p>This post is intended as a discussion hub for any and all topics related to potential future MathOverflow conferences; any relevant input is appreciated.</p>
<hr />
<p>EDIT: Negative feedback is also appreciated! In light of the initial negative response, if any of the downvoters have any comments against this being a good idea I would like to hear them.</p>
<hr />
<p><span class="math-container">$^*$</span>Shouts out to Gerhard, Peter, Anna, Anton, Gjergji, Larry and Cheryl; that night is a very fond memory. Too bad we stopped drinking before tattoos sounded like a good idea!</p>
https://meta.mathoverflow.net/q/50872What happened to the stack exchange app for iOS?Carlo Beenakkerhttps://meta.mathoverflow.net/users/112602021-06-29T17:55:53Z2022-11-20T17:06:01Z
<p>The stackexchange app would no longer launch, I tried to reload it from the Mac App Store, and it’s not there (or at least, I could not find it).</p>
<p>I probably missed some event, is there an alternative?</p>
https://meta.mathoverflow.net/q/41983Wrong rendering in narrow width in SafariLSpicehttps://meta.mathoverflow.net/users/23832019-04-25T16:12:51Z2022-11-08T19:10:42Z
<p>When I view the front page right now in Safari, I see:
<a href="https://i.stack.imgur.com/s6Sg2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/s6Sg2.png" alt="question mark appears mid-equation"></a>
Notice that the question mark, which the poster properly placed at the end of the equation (see the question (before another edit removed the question mark) at <a href="https://mathoverflow.net/revisions/329925/2">https://mathoverflow.net/revisions/329925/2</a>), appears at the end of the first line, mid-inequality. I think that this is probably a result of a relatively narrow window width (138 characters). I'm not sure what to say about this except that it's obviously (presumably?) not the way it should be rendering.</p>
https://meta.mathoverflow.net/q/314454News of potential interest to the MO communityLuciahttps://meta.mathoverflow.net/users/386242017-02-20T06:05:04Z2022-10-13T16:53:04Z
<p>Occasionally, there has been a suggestion to start a meta question to collect information that might be of interest to the MO community. This is an attempt to start such a thread.</p>
<p>Is there any news that you think would be of wide interest to the MO community? Please exercise your discretion in any answers, and your judgement on the appropriateness or significance of any event.</p>
https://meta.mathoverflow.net/q/29216Numbering and cross referencing of equations in questions and answersPedro Lauridsen Ribeirohttps://meta.mathoverflow.net/users/112112016-06-15T06:18:03Z2022-10-26T12:55:40Z
<p>A basic LaTeX feature which I sometimes miss when asking and answering questions in MO (specially when the question and the particularly the answer are longer) is the possibility of <em>numbering</em> equations for cross referencing. I tried to do it naively a couple of times but it never worked. I also looked into the MO help pages to figure out a way to do it, to no avail. I do not know if there is an intrinsic limitation in MathJax for implementing such a feature, but I believe it would be quite helpful to be able to do so. I would be happy enough with just simple numbering and then cross referencing bare-handedly. Fully-fledged, <code>\label</code>-<code>\eqref</code>-style cross referencing would probably be overkill since questions and answers are not <em>that</em> long.</p>
<p>If it is indeed the case that numbering and cross referencing of formulas is currently not possible in MO, is it feasible to implement such a feature? If that is the case, would it be helpful for other people in the MO community as well? Thanks in advance.</p>
https://meta.mathoverflow.net/q/202415Should there be any concern about the number of questions imported into PhysicsOverflow?Simon Rosehttps://meta.mathoverflow.net/users/17032014-12-07T19:18:25Z2022-11-19T22:32:06Z
<p>I just happened to note that <a href="http://www.physicsoverflow.org/" rel="nofollow">http://www.physicsoverflow.org/</a> now exists; this isn't a stackexchange website, but seems to run on similar software, and with similar goals to mathoverflow, which seems reasonable to me.</p>
<p>However, it seems to have populated itself with a large number of questions from this site (and perhaps others), and not necessarily with permission (although it does provide attribution).</p>
<p>Examples:</p>
<p><a href="http://www.physicsoverflow.org/25309/free-boson-correlator-%24-langle-x-z-x-w-rangle-ln-z-w-%24" rel="nofollow">http://www.physicsoverflow.org/25309/free-boson-correlator-%24-langle-x-z-x-w-rangle-ln-z-w-%24</a></p>
<p><a href="http://www.physicsoverflow.org/25273/why-is-the-exterior-algebra-so-ubiquitous" rel="nofollow">http://www.physicsoverflow.org/25273/why-is-the-exterior-algebra-so-ubiquitous</a></p>
<p><a href="http://www.physicsoverflow.org/25271/matrix-tree-theorem-via-supersymmetry-e-grassman-algebras" rel="nofollow">http://www.physicsoverflow.org/25271/matrix-tree-theorem-via-supersymmetry-e-grassman-algebras</a></p>
<p>and many others; these are the first three questions on the website as I am viewing it right now.</p>
<p>Am I wrong to feel a little weirded out by this? It seems in some respects to have snatched up a large proportion of this site, users, questions, answers, comments and all, without really clearly having permission to do so.</p>
<p><strong>Edit:</strong> Upon looking at the website a bit more, I happened to click on the "Is this you?" link on my "user page", only to have it end up at a 404. This should be addressed.</p>
<p>Furthermore, something else I just thought of: What is there to stop someone else from claiming my account? With the discussion below about academic brands, this is a potentially serious issue.</p>
https://meta.mathoverflow.net/q/17467JavaScript loading problemBill Johnsonhttps://meta.mathoverflow.net/users/25542014-06-15T22:07:26Z2022-11-16T06:11:00Z
<p>In my hotel in Shanghai, I get the error message</p>
<p>MathOverflow requires external JavaScript from another domain, which is blocked or failed to load.</p>
<p>Is there a work around for this? Posts load very slowly, I cannot vote, some comments are not viewable,...</p>
https://meta.mathoverflow.net/q/16016Any chance of a "save for later / TODO" feature?Suvrithttps://meta.mathoverflow.net/users/84302014-04-03T21:42:04Z2022-11-10T05:50:28Z
<p>Sometimes when browsing MO questions I have the need to "save for later" for various reasons. There is a <em>star</em> for favoriting questions, it would be very useful to have "TODO" labels beyond just the <em>favorite</em> label for marking questions (because the favorites list might be already too long, and the TODO questions can eventually get lost in it). </p>
<blockquote>
<p>Is there any chance for such a feature ever becoming available?</p>
</blockquote>
<p>Those who use feedly.com or other newsreaders will be familiar with such a feature.</p>
https://meta.mathoverflow.net/q/12976Registered vs. unregistered users?Anna M. https://meta.mathoverflow.net/users/66992013-12-19T20:52:38Z2022-11-24T12:06:34Z
<p>What does it mean if a user is unregistered? </p>
<p>I'm interested in the questions and answers of a particular user, let's say "SAM". I clearly see questions that SAM has asked, but when I search for "SAM" under Users, nothing comes up. When I click on the username under one of SAM's questions, I see that SAM has a user number, over 2k in reputation, a page that aggregates SAM's questions and answers, but SAM is Unregistered. Is that why I can't find SAM's page when I search for "SAM"? </p>
<p>Would love to figure out what's going on. </p>
<p>It's probably not a bug, but it feels like one; hence the tag. </p>
https://meta.mathoverflow.net/q/3557Specialized chat roomsTobias Kildetofthttps://meta.mathoverflow.net/users/46142013-07-03T10:04:28Z2022-10-23T06:02:37Z
<p>Would there be an interest in having more specialized chat rooms, like the one for homotopy theory that currently exists?</p>
<p>So far, the homotopy theory one seems to be fairly successful, and it seems that other topics might also enjoy a chat room like it.</p>
<p>Obviously, if such a chat room is to be useful, it will need to have at least a few experts interested in frequenting it, which would then mean that people should be at least somewhat sparing with pings.</p>
<p>I am posting this both as a general question about whether people would be interested in such chat rooms, and as a place where people can plan such chat rooms.</p>
<p>If you have a topic you would like a chat room for, put it as an answer. Upvotes for that answer should then be interpreted as someone saying "yes, I would use such a chat room to at least some extend" (preferably with a comment so it can be gauged who those people who are interested are).</p>
https://meta.mathoverflow.net/q/22331Requests for reopen and undelete votes for closed and deleted questionsAndrés E. Caicedohttps://meta.mathoverflow.net/users/60852013-06-27T05:52:17Z2022-09-25T10:34:59Z
<p>Since I expect this may prove rather useful, I'm blatantly purloining Asaf's <a href="https://math.meta.stackexchange.com/q/6424/462">question</a> from meta.math.se. </p>
<blockquote>
<p>Please post general requests for reopen votes as answers below.</p>
<p>Beware that "short" requests such as "request reopening of <<em>link</em>>" may be automatically converted to comments by the SE software, so you will need to say more, such as why you think that the question should be reopened.</p>
<p>Please do not use this thread to engage in debates on contentious matters (e.g. reasons for closure). That should be done in a separate thread - which can be linked to from here.</p>
<p>If a question is reopened then please put [REOPENED] at the start of the request (answer).</p>
</blockquote>
<p>Of course, each requested question may need some editing or other improvements before it is fit, and as indicated <a href="https://mathoverflow.net/questions/134562/set-theory-forcing#comment346706_134562">elsewhere</a>, this is desirable, and I hope may be expedited through this thread. </p>
<p>(Improvements on the phrasing are welcome.)</p>
https://meta.mathoverflow.net/q/19416Help improve tagging!François G. Doraishttps://meta.mathoverflow.net/users/20002013-06-26T17:24:05Z2022-11-15T10:22:09Z
<p><strong>Please help by writing <a href="https://mathoverflow.net/tags">tag wikis</a> for your favorite tags!</strong></p>
<p><strong>Use answers to this post to suggest tag synonyms.</strong></p>
<p>Finally, if you're a 10k+ user, note how easy it is for you to edit tags now!</p>
<p><img src="https://i.stack.imgur.com/fedGE.png" alt="Quick tag edit"></p>