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On endomorphisms of the direct product of two free groups

Preprint

We describe the endomorphisms of the direct product of two free groups of finite rank and obtain conditions for which the subgroup of fixed points is finitely generated and we do the same for periodic points. We also describe the automorphisms of such a group and solve the three Whitehead problems for automorphisms, monomorphisms and endomorphisms for groups in this class. We also obtain conditions for an endomorphism to be uniformly continuous when a suitable metric is considered and study infinite fixed points of the extension to the completion of the group.

Publication

Year of publication: 2020

Identifiers

Other: arXiv:2012.03635v1

Alternative Titles

Preprint