Question

Topos Theory as a link between logic and geometry

score 447 · Answer 1 · 2021-06-01 23:24:53

447

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Topos Theory as a link between logic and geometry

Published on 01 Jun 2021 - 23:24

score 1k · Answer 2 · 2021-06-05 16:36:52

1k

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Prerequisites for Peter Johnstone's Topos Theory

Published on 05 Jun 2021 - 16:36

score 162 · Answer 3 · 2026-03-28 20:59:17

162

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Does a category of modules in an elementary topos have enough injectives?

Published on 28 Mar 2026 - 20:59

score 40 · Answer 4 · 2026-03-25 18:59:08

40

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Uniqueness of amalgation when proving that presheaves are sheaves for the trivial topology

Published on 25 Mar 2026 - 18:59

score 273 · Answer 5 · 2021-06-19 09:57:49

273

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${\bf Set}$ is the category of sheaves on the one-point topological space

Published on 19 Jun 2021 - 9:57

score 164 · Answer 6 · 2021-06-22 23:01:14

164

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How do you apply $\infty$-topos theory to topos theory?

Published on 22 Jun 2021 - 23:01

score 98 · Answer 7 · 2026-03-26 22:16:24

98

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If $A \to 1$ is an epimorphism in a well-pointed topos, does $A$ have a global element?

Published on 26 Mar 2026 - 22:16

score 113 · Answer 8 · 2026-03-28 10:55:41

113

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Exercise 7, Chapter 5, Sheaves in Geometry and Logic

Published on 28 Mar 2026 - 10:55

score 107 · Answer 9 · 2026-03-25 18:54:49

107

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Can any Grothendieck topos be presented by a singleton coverage?

Published on 25 Mar 2026 - 18:54

score 981 · Answer 10 · 2026-03-28 14:44:07

981

Views

Topos and stacks of neural networks: how to understand sentence "... values in the topos of G-sets"?

Published on 28 Mar 2026 - 14:44

score 180 · Answer 11 · 2021-07-05 18:44:43

180

Views

Is there a succinct way to axiomatize the theory of a single elementary topos?

Published on 05 Jul 2021 - 18:44

score 107 · Answer 12 · 2026-02-23 10:03:23

107

Views

Johnstone's Topos Theory, Lemma 0.17 - the lower-right square is a pushout, proof help.

Published on 23 Feb 2026 - 10:03

score 82 · Answer 13 · 2026-03-28 02:22:52

82

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Is characterizing fields as those rings with free modules useful in other contexts than sets?

Published on 28 Mar 2026 - 2:22

score 308 · Answer 14 · 2021-07-22 18:31:50

308

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Algebraic Geometry + Sheaves Reference for Beginner

Published on 22 Jul 2021 - 18:31

score 179 · Answer 15 · 2021-07-23 12:21:27

179

Views

Problem with Awodey's Category Theory 8.8 Topoi, an alternative characterization of subobject classifiers.

Published on 23 Jul 2021 - 12:21

List Question

Topos Theory as a link between logic and geometry

Prerequisites for Peter Johnstone's Topos Theory

Does a category of modules in an elementary topos have enough injectives?

Uniqueness of amalgation when proving that presheaves are sheaves for the trivial topology

${\bf Set}$ is the category of sheaves on the one-point topological space

How do you apply $\infty$-topos theory to topos theory?

If $A \to 1$ is an epimorphism in a well-pointed topos, does $A$ have a global element?

Exercise 7, Chapter 5, Sheaves in Geometry and Logic

Can any Grothendieck topos be presented by a singleton coverage?

Topos and stacks of neural networks: how to understand sentence "... values in the topos of G-sets"?

Is there a succinct way to axiomatize the theory of a single elementary topos?

Johnstone's Topos Theory, Lemma 0.17 - the lower-right square is a pushout, proof help.

Is characterizing fields as those rings with free modules useful in other contexts than sets?

Algebraic Geometry + Sheaves Reference for Beginner

Problem with Awodey's Category Theory 8.8 Topoi, an alternative characterization of subobject classifiers.

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