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YCor
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The tag has now 7 occurrences.

It stands for "elementary theory of the category of sets". I suggest to manually change it to . (This is 31 letters. would be 34 letters, is maybe suitable too.)

I believe abbreviations should be avoided in tags (exceptions only being very famous ones such as PDE, ODE).

YCor
  • 63.9k
  • 28
  • 39