27 Answers votes newest views recent 5Examples of polynomial rings $A[x]$ with relatively large Krull dimension 0“Axiom of global choice” 2How to cite math journals? 2How to call covers not covering anything else? 1Subgroup of lattice-ordered group 4What kind of subset is Spec(R_P) in Spec(R)? 9Is the empty graph a tree? 6Does every regular Noetherian domain have finite Krull dimension? 3Laurent Polynomials 1Lattice of Prime ideals 4Direct product of rings 4Question on localization technique 3Question on local cohomology 2Are grothendieck universes enough for the foundations of category theory? 2Length of a resolution 5Projective dimension of zero module 3Finitely generated resolutions 8On some finiteness properties for schemes 0A construction of tensor product (Coutinho’s book: D-module) 1Using Function Terminology for Functors? 6union of infinitely many prime ideals 3Why should morphisms between two graded vector spaces preserve grading? 17Blackbox Theorems 11What is the dimension of the product ring $\prod \mathbb Z/2^n\mathbb Z$ ? 2Injective modules and torsion functors 2injectivity of torsion submodules of injectives 5What’s the notation for a function restricted to a subset of the codomain?