User Minimus Heximus

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71

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Most helpful math resources on the web

Jun 8 '16 at 18:27 Community♦ 1

103

votes

2

answers

12k

views

Does every non-empty set admit a group structure (in ZF)?

set-theory gr.group-theory lo.logic axiom-of-choice

Dec 10 '15 at 19:00 David Zhang 1,107

65

votes

3

answers

7k

views

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gr.group-theory rt.representation-theory

Feb 14 '14 at 10:02 Geoff Robinson 35.7k

49

votes

1

answer

2k

views

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at.algebraic-topology gn.general-topology homotopy-theory fundamental-group

Aug 30 '15 at 17:21 Stefan Hamcke 197

45

votes

2

answers

2k

views

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ct.category-theory topos-theory constructive-mathematics p-adic-numbers

Aug 29 '15 at 15:46 Community♦ 1

32

votes

9

answers

6k

views

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applied-mathematics billiards

Aug 12 '19 at 14:29 Carlo Beenakker 118k

27

votes

1

answer

1k

views

A group allowing exactly 7 group topologies

gr.group-theory gn.general-topology topological-groups lattice-theory

Oct 13 '15 at 6:19 Minimus Heximus 1,075

26

votes

4

answers

7k

views

Groups with all subgroups normal

gr.group-theory normal-subgroups

Jan 2 '20 at 13:53 Martin Sleziak 4,257

18

votes

1

answer

3k

views

Why do people use “formal calculation” to describe informal calculations?

soft-question terminology intuition gm.general-mathematics

May 14 '15 at 20:38 Benjamin Dickman 6,675

16

votes

2

answers

3k

views

When is $G$ isomorphic to $G \times G$?

gr.group-theory

Mar 3 '12 at 22:26 Community♦ 1

15

votes

3

answers

2k

views

Are measurable homomorphisms $ (\Bbb{C},+) \to (\Bbb{C},+) $ or $ (\Bbb{C},+) \to (\Bbb{C},*) $ continuous, and do they admit an explicit description?

topological-groups continuity measurable-functions

May 8 '15 at 7:43 Transcendental 1,366

14

votes

2

answers

690

views

How big is the lattice of all functions?

reference-request lattice-theory

Oct 2 '18 at 16:46 KP Hart 5,589

14

votes

5

answers

4k

views

Finite groups with elements of order n

gr.group-theory finite-groups

Dec 13 '15 at 14:47 nea marin 1

14

votes

1

answer

1k

views

Distributivity of group topologies on $\Bbb Z$

gr.group-theory gn.general-topology topological-groups lattice-theory

Nov 12 '14 at 3:18 Community♦ 1

13

votes

3

answers

518

views

If G is a sequential topological group, must G x G be sequential?

gn.general-topology topological-groups

Feb 12 '19 at 8:02 Taras Banakh 28.8k

12

votes

2

answers

2k

views

Generalization of a theorem of Øystein Ore in group theory

gr.group-theory finite-groups lattices subfactors computational-group-theory

May 28 '16 at 18:42 Community♦ 1

12

votes

2

answers

549

views

Start with a topological group, take the meet of the two uniformities, and take the topology. Is the result again a topological group? [xpost from math.SE]

gn.general-topology gr.group-theory topological-groups uniform-spaces

Oct 19 '12 at 20:42 Community♦ 1

11

votes

1

answer

1k

views

Topologies on the field of rationals

gn.general-topology

Sep 6 '12 at 14:06 BS. 8,689

7

votes

3

answers

5k

views

Number of Normal subgroups In a p-Group

gr.group-theory p-groups

Dec 18 '15 at 22:15 Geoff Robinson 35.7k

7

votes

1

answer

340

views

Fuzzy logic of Godel

lo.logic ra.rings-and-algebras universal-algebra

Sep 6 '15 at 21:58 Goldstern 13.1k

7

votes

1

answer

451

views

Group structure on an arbitrary completely regular topological space that makes $(x,y)\mapsto xy^{-1}$ continuous at $(1,1)$

gr.group-theory gn.general-topology topological-groups

Sep 5 '14 at 11:27 Minimus Heximus 1,075

6

votes

2

answers

433

views

Hausdorff group topologies on finitely generated groups

topological-groups gn.general-topology

Sep 30 '14 at 13:56 Community♦ 1

5

votes

0

answers

129

views

Is a successor to a successor to the trivial group topology on an Abelian group, totally bounded?

gn.general-topology examples topological-groups uniform-spaces

Sep 4 '15 at 18:07 Minimus Heximus 1,075

4

votes

1

answer

334

views

Normal subgroup lattice of the group $U_{6n}$

gr.group-theory lattice-theory normal-subgroups

Oct 20 '14 at 15:51 Community♦ 1

4

votes

0

answers

520

views

Programming workbooks in C++ and Research Math [closed]

reference-request ap.analysis-of-pdes nonlinear-optimization mathematical-modeling

Apr 30 '15 at 0:16 TKM 641

3

votes

0

answers

182

views

Generalization of the fundamental theorem of cyclic groups 2

gr.group-theory finite-groups computational-group-theory

May 10 '15 at 14:20 Community♦ 1

3

votes

1

answer

306

views

A finite distributive lattice which may be represented as the normal subgroup lattice of a supersolvable group

gr.group-theory lattice-theory normal-subgroups

Oct 1 '17 at 5:05 Community♦ 1

3

votes

1

answer

407

views

a characterization for cyclic groups [duplicate]

finite-groups lattice-theory

May 19 '14 at 19:41 Minimus Heximus 1,075

3

votes

0

answers

149

views

A boolean representation of the Möbius function on a finite lattice

co.combinatorics lattice-theory posets enumerative-combinatorics boolean-algebras

Mar 9 '17 at 13:47 Sebastien Palcoux 20.8k

1

vote

0

answers

252

views

A question on the poset of classes of isomorphic subgroups of finite groups

gr.group-theory finite-groups lattices

May 23 '14 at 9:21 Marius Tarnauceanu 601

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Most helpful math resources on the web

Does every non-empty set admit a group structure (in ZF)?

5/8 bound in group theory

Is $\mathbb{R}^3 \setminus \mathbb{Q}^3$ simply connected?

The formal p-adic numbers

What “real life” problems can be solved using billiards?

A group allowing exactly 7 group topologies

Groups with all subgroups normal

Why do people use “formal calculation” to describe informal calculations?

When is $G$ isomorphic to $G \times G$?

Are measurable homomorphisms $ (\Bbb{C},+) \to (\Bbb{C},+) $ or $ (\Bbb{C},+) \to (\Bbb{C},*) $ continuous, and do they admit an explicit description?

How big is the lattice of all functions?

Finite groups with elements of order n

Distributivity of group topologies on $\Bbb Z$

If G is a sequential topological group, must G x G be sequential?

Generalization of a theorem of Øystein Ore in group theory

Start with a topological group, take the meet of the two uniformities, and take the topology. Is the result again a topological group? [xpost from math.SE]

Topologies on the field of rationals

Number of Normal subgroups In a p-Group

Fuzzy logic of Godel

Group structure on an arbitrary completely regular topological space that makes $(x,y)\mapsto xy^{-1}$ continuous at $(1,1)$

Hausdorff group topologies on finitely generated groups

Is a successor to a successor to the trivial group topology on an Abelian group, totally bounded?

Normal subgroup lattice of the group $U_{6n}$

Programming workbooks in C++ and Research Math [closed]

Generalization of the fundamental theorem of cyclic groups 2

A finite distributive lattice which may be represented as the normal subgroup lattice of a supersolvable group

a characterization for cyclic groups [duplicate]

A boolean representation of the Möbius function on a finite lattice

A question on the poset of classes of isomorphic subgroups of finite groups