251

Questions

votes newest views recent

4

11

votes

1

answer

502

views

Analogy between the exterior power and the power set

categorification ct.category-theory exterior-algebra symmetric-monoidal-catego

may 12 at 10:22 MathOverflow♦ 1●2●3

2

3

votes

1

answer

195

views

Families of local rings coming from a locally ringed space

sheaf-theory ag.algebraic-geometry

apr 26 at 19:45 Manny Reyes 2,048●7●17

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13

votes

1

answer

693

views

Is Dependent Choice equivalent to the statement that every PID is factorial?

abstract-algebra lo.logic axiom-of-choice

apr 17 at 23:31 Asaf Karagila 7,198●1●14●44

2

5

votes

2

answers

319

views

IBN for algebraic theories

ra.rings-and-algebras universal-algebra reference-request algebraic-theory

apr 10 at 12:25 Martin Brandenburg 29.1k●2●45●129

9

20

votes

2

answers

624

views

Profinite groups as étale fundamental groups

ag.algebraic-geometry fundamental-group galois-theory profinite-groups

apr 3 at 12:49 anon 51●1●1

4

6

votes

4

answers

587

views

nonhausdorff dimension

gn.general-topology

mar 22 at 15:13 John Rognes 1,156●7●9

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4

votes

1

answer

633

views

Exterior powers in tensor categories

exterior-algebra monoidal-categories

mar 21 at 0:21 Martin Brandenburg 29.1k●2●45●129

1

12

votes

1

answer

528

views

Principal maximal ideals in Z[x]/(F)

ag.algebraic-geometry ac.commutative-algebra combinatorial-game-theory algebraic-number-theory

mar 20 at 4:34 ayanta 528●2●9

3

5

votes

1

answer

269

views

What about schemes built up out of graded rings?

ag.algebraic-geometry schemes monoidal-categories

mar 14 at 1:40 David Ben-Zvi 12.6k●1●28●50

5

votes

1

answer

274

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Baer’s criterion for projective modules

modules ac.commutative-algebra projective-module

mar 12 at 14:43 Jeremy Rickard 1,514●1●6●9