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Questions about the branch of algebra that deals with groups.
3
votes
Unique product group which is not right orderable
Every U.P. group is a t.u.p group. See
Andrzej Strojnowski, A note on u.p. groups, Communications in Algebra, 8:3, (1980) 231-234. doi:10.1080/00927878008822456
2
votes
Local vs global nilpotence class (Lazard correspondence)
This is not a complete answer (only gives the answer for p=2,3,5) but it is also too long to add as a comment!
Known results concerning similar questions as yours suggest that the nilpotency class of …
2
votes
Why do we associate a graph to a ring?
The Fischer graph is one of examples; see page 569 of
Suzuki, Michio. Group theory. II. Translated from the Japanese. Grundlehren der Mathematischen Wissenschaften [Fundamental Principles of Mathemati …
2
votes
1
answer
202
views
Is there a non-right-orderable torsion-free quotient group of the braid group on 3 strands?
The braid group on 3 strands has the presentation $\langle x,y \;|\; xyx=yxy\rangle$. A group $G$ is called right-orderable if there is a total order $<$ on the set $G$ such that if $a<b$ then $ac<bc$ …
5
votes
1
answer
722
views
Finitely generated solvable groups all of whose abelian normal subgroups are finite
Is there a classification for infinite finitely generated solvable groups all of whose abelian normal subgroups are finite?
I mean by classification something like presentation.
Edited: Is there an …
1
vote
0
answers
71
views
Non-zero homomorphism from a module to its ground ring
Let $c_1,\dots,c_k$ be some non-zero complex numbers and $M$ be the abelian subgroup generated by $c_1,\dots,c_k$ (i.e. all $\mathbb{Z}$-linear combinations of $c_1\dots,c_k$). Suppose further that $\ …
3
votes
0
answers
59
views
Zero divisors with support size 3 in complex group algebras of residually finite groups
Conjecture. There exists a function $f:\mathbb{N} \rightarrow \mathbb{N}$ such that if $\beta$ is a non-zero element of the complex group algebra $\mathbb{C}[G]$ of a finite group $G$ such that $1\i …
6
votes
1
answer
355
views
Zero divisors in complex group algebras of residually finite groups
Conjecture. There exists a function $f:\mathbb{N} \rightarrow \mathbb{N}$ such that if $\alpha$ and $\beta$ are non-zero elements of the complex group algebra $\mathbb{C}[G]$ of a finite group $G$ suc …
8
votes
1
answer
556
views
The parity of the full automorphism group order of finite non-abelian groups of prime exponent
Is there a finite non-abelian group $G$ of prime exponent such that the full automorphism group of $G$ is of odd order?
2
votes
n-Engel groups as "homotopy associative" groups
For Quesion 5:
What is known today about normal closures of elements in n-Engel groups?
see the following papers:
Traustason, Gunnar, Locally nilpotent 4-Engel groups are Fitting groups.
J. Algebr …
0
votes
Applications of logic to group theory?
See the followings:
Malcev, A. I.
On a general method for obtaining local theorems in group theory, Notices
of the Pedagogical Institute of Ivanovo, Physical-Mathematical Sciences, 1,
3-9 (in R …
5
votes
Non-trivial problems about the trivial group
Problem 1.12 of [Unsolved Problems in Group Theory, The Kourovka Notebook, Novosibirsk, 2010]:
(W. Magnus) The problem of the isomorphism to the trivial group for all groups with $n$ generators and …
3
votes
Laws characterizing the trivial group
Every word $w$ on free generators $x_1,\dots,x_n$ can be written as
$$w=x_1^{\alpha_1} \cdots x_n^{\alpha_n} c(x_1,\dots,x_n),$$
where $c$ is a word in the commutator subgroup of $\langle x_1,\dots,x …
4
votes
Accepted
Smallest subgroups with trivial centralizer?
The number $k(G)$ is the domination number of the non-commuting graph of $G$.
See Proposition 2.14 of [J. Algebra, 298 (2006) 468–492].
By Corollary 2.17 of [J. Algebra, 298 (2006) 468–492], if $k(H …
2
votes
Classification of $p$-groups, what after it?
The answer is positive: since one must give a classification of at least one types of finite $p$-groups which I suggest to consider the classification of finite $p$-groups having a maximal subgroup w …