Direct summands in additive categories
115502
Analogue of the Cantor-Bernstein-Schroeder theorem for general algebraic structures
145561
About the additive group and the multiplicative group of a field
106370
How do we construct the coslice category $C / \bf{C}$ given $\textbf{C}/C$ and prove that the two are equal?
50114
A question about direct sums and products of modules
94246
Category-theoretic limit related to topological limit?
1751
When does the tensor product distribute over an infinite direct product?
66134
Sufficiently many idempotents and commutativity
87412
when does a functor map products into products?
21466
$P$ is projective . Show that $P$ is a direct summand of a free $R-$ module
122559
Some questions on abelian category
42096
Direct product of Sylow subgroups
110059
$A^A$ in category of graphs
10679
Equivalence of Categories and of Their Functor Categories
32340
Continuous bijections and their inverses
54127
Categories with $C \times 0 \cong 0$ for all objects $C$
51786
Is every additive monofunctor between abelian categories left exact?
97800
Exterior power "commutes" with direct sum