Bertrand Haskell

Member for 4 years, 4 months
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1,589

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group-theory

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Questions

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Score Activity Newest Views

8

Is the class of planar graphs axiomatizable?

Dec 28, 2020

8

Messed permutations

Aug 21, 2021

5

Planar networks

Dec 26, 2020

4

Books on chess mathematics

Nov 27

3

Galois theory in combinatorics

Nov 13

Answers

View all 27 answers

Score Activity Newest

15

Any finitely generated subgroup of $(\mathbb{Q},+)$ is cyclic.

Mar 22, 2020

4

Proof of every finite group is finitely presented.

Mar 31, 2020

3

Degree sequence multigraph without loop

Nov 25, 2020

3

Trees in which every vertex is a leaf or adjacent to a leaf

Jul 19, 2020

2

Planar networks

Dec 26, 2020

Tags

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group-theory

24

Score

15

posts

graph-theory

16

Score

26

posts

abelian-groups

15

Score

2

posts

finitely-generated

15

Score

1

post

abstract-algebra

8

Score

6

posts

Reputation

+56

Books on chess mathematics

+30

Galois theory in combinatorics

+20

Any finitely generated subgroup of $(\mathbb{Q},+)$ is cyclic.

+10

Five new results on Conway's 99-graph problem

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