Timeline for A question of notation: what does $x\lt y\in S$ mean?
Current License: CC BY-SA 4.0
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| Jun 30, 2023 at 1:38 | comment | added | LSpice | I can't help pointing out that even the first can potentially be ambiguous, since commas are implicitly standing for conjunction in context-depend ways—i.e., $x, y \in S$ means $x \in S \land y \in S$, but $x, y \in S, x < y$ means $(x \in S \land y \in S) \land (x < y)$. For an extremely contrived example of ambiguity, one could imagine $S$ being something like a set of strings in a certain language, with $<$ being the superstring relation, in which case we could have $1 = 1, 1 \in S, 1 = 1 < 1$. | |
| Jan 7, 2021 at 17:00 | history | migrated | to mathoverflow.net | ||
| Dec 26, 2020 at 20:26 | history | answered | user44143 | CC BY-SA 4.0 |