Question

Lifting subobject classifier of a category to its arrow category

score 242 · Answer 1 · 2026-04-17 04:16:48

242

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Lifting subobject classifier of a category to its arrow category

Published on 17 Apr 2026 - 4:16

score 137 · Answer 2 · 2026-04-26 08:02:21

137

Views

Category Theory in Context 3.1 viii: Composite pullback rectangle

Published on 26 Apr 2026 - 8:02

score 1.9k · Answer 3 · 2026-04-12 00:55:59

1.9k

Views

Why is it the (group) morphisms that matter?

Published on 12 Apr 2026 - 0:55

score 99 · Answer 4 · 2026-04-15 12:17:56

99

Views

Induced map from a complex of modules

Published on 15 Apr 2026 - 12:17

score 401 · Answer 5 · 2026-04-12 20:27:38

401

Views

Locally constant sheaf on irreducible space is constant

Published on 12 Apr 2026 - 20:27

score 158 · Answer 6 · 2026-04-09 13:13:02

158

Views

Is terminal object the kernel of identity morphism?

Published on 09 Apr 2026 - 13:13

score 111 · Answer 7 · 2026-04-13 20:50:56

111

Views

Entire relation, projective object and choice object, and the axiom of choice

Published on 13 Apr 2026 - 20:50

score 265 · Answer 8 · 2026-04-10 11:12:11

265

Views

"Natural" equivalence of categories?

Published on 10 Apr 2026 - 11:12

score 80 · Answer 9 · 2026-04-26 01:16:12

80

Views

Are morphisms in a slice category $c/C$ inherited from the original category $C$?

Published on 26 Apr 2026 - 1:16

score 220 · Answer 10 · 2026-04-17 05:42:46

220

Views

Functors which are non-isomorphic but whose derived functors are isomorphic

Published on 17 Apr 2026 - 5:42

score 71 · Answer 11 · 2026-04-29 12:55:24

71

Views

Why the open-ball topology functor from $\boldsymbol{Met_c}$ to $\boldsymbol{Top_m}$ is not an isomorphism? Are they isomorphic at all?

Published on 29 Apr 2026 - 12:55

score 56 · Answer 12 · 2026-04-09 12:41:55

56

Views

How much structure do morphisms have?

Published on 09 Apr 2026 - 12:41

score 387 · Answer 13 · 2026-04-16 10:48:01

387

Views

The category of finite dimensional right $KG$-modules is equivalent to the category of finite dimensional representations of a quiver $Q$

Published on 16 Apr 2026 - 10:48

score 141 · Answer 14 · 2026-04-14 09:59:50

141

Views

Non-emptyness of projective limit over countable set

Published on 14 Apr 2026 - 9:59

score 335 · Answer 15 · 2026-04-13 18:09:20

335

Views

In which sense modules generalize vector bundles?

Published on 13 Apr 2026 - 18:09

List Question

Lifting subobject classifier of a category to its arrow category

Category Theory in Context 3.1 viii: Composite pullback rectangle

Why is it the (group) morphisms that matter?

Induced map from a complex of modules

Locally constant sheaf on irreducible space is constant

Is terminal object the kernel of identity morphism?

Entire relation, projective object and choice object, and the axiom of choice

"Natural" equivalence of categories?

Are morphisms in a slice category $c/C$ inherited from the original category $C$?

Functors which are non-isomorphic but whose derived functors are isomorphic

Why the open-ball topology functor from $\boldsymbol{Met_c}$ to $\boldsymbol{Top_m}$ is not an isomorphism? Are they isomorphic at all?

How much structure do morphisms have?

The category of finite dimensional right $KG$-modules is equivalent to the category of finite dimensional representations of a quiver $Q$

Non-emptyness of projective limit over countable set

In which sense modules generalize vector bundles?

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