9.17 (1984)

Partially Solved

Let $G$ be a locally normal residually finite group.
$\qquad$ a) Can $G$ be embedded in a direct product of finite groups when the factor group $G/[G, G]$ is a direct product of cyclic groups?
$\qquad$ b) Does there exist a normal subgroup $H$ of $G$ which is embeddable in a direct product of finite groups and is such that $G/H$ is a divisible abelian group?

Progress

a) Not always (L. A. Kurdachenko, Math. Notes, 39 (1986), 273–279).

Comments

All comments are the responsibility of the user. Comments appearing on this page are not verified for correctness. Please keep posts mathematical and on topic. If you want to submit a proof (or a partial proof), please use the dedicated proof submission form rather than posting it in the comments.
Order by newest first or oldest first.

No comments yet. Be the first to comment.

Proof claims

Proof claims are the responsibility of the submitter. Appearance here does not mean the claim has been checked for mathematical correctness. Moderators only screen for spam, abuse, and obviously low-effort submissions.

No proof claims yet.