User Carl-Fredrik Nyberg Brodda

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Is there a residually nilpotent one-relator group that is not residually a finite p-group for any prime p?

answered Feb 28, 2023 at 12:10

6 votes

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Is there a finitely generated residually finite group with solvable word problem that does not embed in a finitely presented residually finite group?

answered Feb 10, 2020 at 15:59

6 votes

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Open problems concerning all the finite groups

answered Mar 24, 2019 at 16:43

6 votes

Algorithm for group cohomology

answered Feb 1, 2019 at 7:36

6 votes

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Get the commands history from GAP system

answered Mar 13, 2021 at 18:11

5 votes

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Cohomology of $S$-arithmetic groups with trivial coefficients such as $H^n(\rm{PGL}_2(\mathbb{Z}[1/N]);\mathbb{Z})$

answered Feb 1 at 2:00

5 votes

Prove these are not surface groups

answered Apr 12 at 4:45

4 votes

PhD dissertations that solve an established open problem

answered Sep 19, 2022 at 8:34

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Computable change in minimum word length of subgroup elements

answered Apr 27, 2021 at 8:37

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What are the exceptional properties of Mersenne exponent for known largest prime?

answered Apr 23, 2020 at 14:28

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Examples of "natural" finitely generated groups with an undecidable conjugacy problem

answered Sep 21, 2020 at 15:24

4 votes

A “mother of all groups”? What kind of structures have "mother of all"s?

answered Feb 1, 2019 at 11:01

4 votes

Are there any computational problems in groups that are harder than P?

answered Feb 2, 2019 at 10:44

4 votes

super Lyndon words

answered Feb 27, 2019 at 8:50

4 votes

Compute generators of $\Gamma_0(N)$

answered Mar 10, 2020 at 13:35

3 votes

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Dedekind's original proof of independence theorem

answered Feb 21, 2019 at 8:10

3 votes

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Extension of chromatic polynomial to multi graphs

answered Feb 1, 2019 at 7:55

3 votes

Which groups are LERF?

answered Nov 5, 2020 at 11:02

3 votes

What's the current state of one-rule semi-Thue system termination problem?

answered Jan 20, 2021 at 14:32

3 votes

Subgroups of one-relator groups

answered Mar 15, 2021 at 11:09

3 votes

examples of finitely generated semigroups that are not residually finite

answered Sep 17, 2020 at 10:59

3 votes

Embedding of Baumslag-Solitar group into a certain group

answered May 19, 2021 at 16:03

3 votes

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Behavior of biggest prime divisor of $n$ as $n$ grows large

answered Aug 14, 2021 at 9:41

3 votes

Results with short, advanced proofs or long, elementary proofs

answered Oct 15, 2022 at 16:33

3 votes

Origin of tropical mathematics

answered Jan 23, 2023 at 18:49

2 votes

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How to calculate genus number of number field using sage?

answered Aug 28, 2021 at 12:16

2 votes

Is there a CAS that can solve a given system of equations in a finite group algebra $kG$?

answered Sep 18, 2020 at 22:43

2 votes

Looking through a bunch of links for unlinks?

answered Jul 26, 2020 at 17:09

2 votes

General properties of free-by-cyclic groups

answered Apr 18, 2020 at 2:41

2 votes

Examples of residually-finite groups

answered Jun 19, 2020 at 13:15

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68 Answers

Is there a residually nilpotent one-relator group that is not residually a finite p-group for any prime p?

Is there a finitely generated residually finite group with solvable word problem that does not embed in a finitely presented residually finite group?

Open problems concerning all the finite groups

Algorithm for group cohomology

Get the commands history from GAP system

Cohomology of $S$-arithmetic groups with trivial coefficients such as $H^n(\rm{PGL}_2(\mathbb{Z}[1/N]);\mathbb{Z})$

Prove these are not surface groups

PhD dissertations that solve an established open problem

Computable change in minimum word length of subgroup elements

What are the exceptional properties of Mersenne exponent for known largest prime?

Examples of "natural" finitely generated groups with an undecidable conjugacy problem

A “mother of all groups”? What kind of structures have "mother of all"s?

Are there any computational problems in groups that are harder than P?

super Lyndon words

Compute generators of $\Gamma_0(N)$

Dedekind's original proof of independence theorem

Extension of chromatic polynomial to multi graphs

Which groups are LERF?

What's the current state of one-rule semi-Thue system termination problem?

Subgroups of one-relator groups

examples of finitely generated semigroups that are not residually finite

Embedding of Baumslag-Solitar group into a certain group

Behavior of biggest prime divisor of $n$ as $n$ grows large

Results with short, advanced proofs or long, elementary proofs

Origin of tropical mathematics

How to calculate genus number of number field using sage?

Is there a CAS that can solve a given system of equations in a finite group algebra $kG$?

Looking through a bunch of links for unlinks?

General properties of free-by-cyclic groups

Examples of residually-finite groups