13 Answers votes newest views recent 4When does a “representable functor” into a category other than Set preserve limits? 22What are some examples of colorful language in serious mathematics papers? 1Baer’s criterion for functors 0Calculating fourier transform at any frequency 2Can epi/mono for natural transformations be checked pointwise? 3Different ways of proving that two sets are equal 7Various concepts of “closure” or “completion” in mathematics 2characterization of a submodule 9Your favorite surprising connections in Mathematics 11Looking for an introductory textbook on algebraic geometry for an undergraduate lecture course 2Existence of hyperelliptic curve with specific number of points in a family 2Between abstract and concrete: What’s the right way to think of specific categories? 8What are interesting families of subsets of a given set?