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Aug
25
answered Are there any stable $(\infty,1)$-topoi?
Aug
21
answered Skeletality of a simplicial set $X$ vs. highest degree of a non-degenerate simplex
Aug
21
answered When does homology commutes with arbitrary direct sums
Aug
19
answered Homotopy direct limit versus direct limit
Aug
16
answered Quotient of locally free sheaf is locally free?
Aug
15
answered Scheme theoretic dual of $\mathbb P^n_k$
Aug
12
answered Morphism schemes after base extension
Aug
11
answered is tangent bundle of $S^n$ an algebraic variety?
Aug
10
answered “Nice proof” that the unit of the left Kan extension of $F$ is an isomorphism, if $F$ is fully faithful
Aug
6
answered A non-algebraic complete lattice
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?