Reputation
45,241
Next tag badge:
94/100 score
27/20 answers
Badges
2 58 132
Newest
 Enlightened
Impact
~393k people reached

Feb
22
answered Is the group cohomology for a profinite group always torsion?
Feb
20
answered How to intrinsically think about simplicial objects.
Feb
19
answered example of a scheme where connected components aren't open
Feb
19
answered Can one drop the retracts in the definition of anodyne extensions?
Feb
16
answered Motivation behind the definition of monomorphism and epimorphism in category theory
Feb
15
asked The smooth Nullstellensatz
Feb
15
answered $\hom (M, \coprod_i N_i) \cong \bigoplus_i \hom (M, N_i)$ in abelian categories when $M$ is simple?
Feb
15
answered Show that there are non-well-founded models of Zermelo Fraenkel set theory
Feb
11
answered Understanding Hartshorne's proof that every projective morphism is proper.
Feb
10
answered Does this definition of the “roots” of an element of an arbitary $R$-algebra make sense? If so, where can I learn more?
Feb
8
answered CoKleisli category of the induced comonad of a monad
Feb
6
answered A variant of projective objects?
Feb
6
answered Natural Numbers Object and the Axiom of Infinity
Feb
5
answered Abstract homotopy invariance of homology
Feb
1
answered Homotopy category of chain complexes as a localization
Jan
31
answered Which maps on the zeroth homology do actually come from continuous maps?
Jan
31
answered Does the category of $k$-algebras have terminal objects?
Jan
23
answered $\mathfrak{Top}$ and injective objects
Jan
16
answered Extending a Homotopy from $X \times [0,1]$ to $X \times \mathbb{R}$
Jan
13
answered Is the existence of finite biproducts a strengthening of commutativity?