English

Galkin Quandles, Pointed Abelian Groups, and Sequence $A000712$

Combinatorics 2011-08-11 v1 Algebraic Topology

Abstract

For each pointed abelian group (A,c)(A,c), there is an associated {\em Galkin quandle} G(A,c)G(A,c) which is an algebraic structure defined on Z3×A\Bbb Z_3\times A that can be used to construct knot invariants. It is known that two finite Galkin quandles are isomorphic if and only if their associated pointed abelian groups are isomorphic. In this paper we classify all finite pointed abelian groups. We show that the number of nonisomorphic pointed abelian groups of order qnq^n (qq prime) is 0mnp(m)p(nm)\sum_{0\le m\le n}p(m)p(n-m), where p(m)p(m) is the number of partitions of integer mm.

Keywords

Cite

@article{arxiv.1108.2215,
  title  = {Galkin Quandles, Pointed Abelian Groups, and Sequence $A000712$},
  author = {W. Edwin Clark and Xiang-dong Hou},
  journal= {arXiv preprint arXiv:1108.2215},
  year   = {2011}
}

Comments

7 pages, 2 figures

R2 v1 2026-06-21T18:48:53.823Z