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Questions

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What kinds of operations are well-defined when working with sets, classes, conglomerates, and yet higher order collections?

set-theory ct.category-theory

mar 11 at 16:22 MathOverflow♦ 1●2●3

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What is the difference between a function and a morphism? [closed]

ct.category-theory

jan 26 at 9:51 Giorgio Mossa 1,387●1●6●15

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What structure supports division to a unique quotient and remainder?

ra.rings-and-algebras division-algebras division-rings

oct 16 at 8:31 Francis Clarke 36●1