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Aug
6
answered Can a ring be both commutative and anticommutative?
Aug
3
answered Hypercohomology: finding a resolution for the de Rham complex of $\mathbb{CP}^1 $
Aug
2
answered Two questions on the definition of $\mathcal{O}_X(U)$ for an affine scheme $X$.
Aug
2
answered Adjunction counit for sheaves is isomorphism
Aug
1
answered Natural Transformations Without Objects
Aug
1
answered What are differences between affine space and vector space?
Jul
29
answered Is there a discrete initial topology on the set of real numbers?
Jul
28
answered Simplicial homology of the skeleton of a simplex
Jul
27
answered Universal property of polynomial ring in $\mathbf{CRING}$
Jul
23
answered How do we get a simplicial homology functor?
Jul
23
asked What are local homomorphisms, geometrically?
Jul
22
answered When are two morphisms of sheaves the same?
Jul
22
answered Asterisk Notation
Jul
17
answered Is it possible to find square root using only rational numbers and elementary arithmetic operators
Jul
15
answered Algebras of the environment monad
Jun
30
answered The two-sided simplicial bar construction is Reedy-cofibrant
Jun
21
answered Abstract proof that internal hom presheaf is a sheaf
Jun
19
answered Difference between being faithful and being injective on arrows
Jun
15
answered Can we make recursion into an axiom schema?
Jun
14
answered Every category is the free category for a given graph?