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Questions designed to generate a "big list" of certain results, examples, conjectures, etc. via many individual answers, each contributing one or a few instances. Such a question should typically be in Community Wiki mode (CW); after asking, please, flag for moderators attention requesting the question to be made CW.

20 votes

What precisely Is "Categorification"?

I think one important point that has been missed here is that there is not (currently) a precise answer to this question. There is a loose answer along the lines of that which Pete Clark gave, but I …
Alex Hoffnung's user avatar