how to correct an erroneous edit

"Black adder" edited my answer to a question asking for a proof of noether normalization. the edit was nicely done, except in the next to last sentence a change was made from "≤ d" to "less than d", which introduces an error. I do not know how to either fix it or message the editor of the question. Or perhaps, in some languages "less than" means ≤?

• You must mean here: mathoverflow.net/a/92434/2926 I fixed it for you, but please check. (BlackAdder evidently meant to be helpful and also asked in the edit summary to check that no errors were introduced in his/her edit.) – Todd Trimble Dec 15 '15 at 17:16
• thank you! that's it. – roy smith Dec 15 '15 at 17:18
• I see now however someone has also edited the original question until it is nonsense when combined with my answer! I.e. Miles Reid wrote two books, one with a difficult proof of NN, his commutative algebra book, and another one with an easier proof, his UAG book. The original question complained about the one in the algebra book. The answer I gave is the easier proof in the geometry book. So now the question and answer are rather puzzling! I.e. I now seem to be providing the same argument that was objected to! subsequent editing poses an interesting challenge to historical accuracy. – roy smith Dec 15 '15 at 17:34
• There was no recent edit, and all edits after the original were minor typo corrections. Evidently your answer was helpful anyway even if you think you merely reproduced Reid's UAG proof, so maybe different words were all it took. The OP by the way seems to have a deleted account and I don't think will be returning, so all puzzlement aside, let's let the answer stand. Your efforts were and are appreciated. :-) – Todd Trimble Dec 15 '15 at 17:43
• I am not sure what you refer to. The question was not edited at all after you gave the answer. All edits happened before and in any case they seem minimal. All version of every post are available in the revision history I mentioned [except in very very rare cases, or when only present for less than five minutes]. For the specific case see: mathoverflow.net/posts/92354/revisions – user9072 Dec 15 '15 at 17:43
• you are right. i misread the date of the last edit of the question. now i am puzzled as to how my answer helped. perhaps as you say, just the fact my notes were written to be especially clear to my class helped. – roy smith Dec 15 '15 at 17:57

• I thought there was a lower bound on the amount of changes the system accepts as an edit. If so, just fixing $<$ to $\le$ may well be impossible. – Emil Jeřábek Dec 16 '15 at 9:36