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Gluing diagrams part 1: A constructive solution for the Higman-Thompson group isomorphism problem

Roman Gorazd

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Arxiv

Gluing diagrams part 1: A constructive solution for the Higman-Thompson group isomorphism problem

Roman Gorazd

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Abstract

This paper introduces gluing diagrams a combinatorial tool to construct homomorphisms between the shift pseudogroups of directed graphs and thus also their full groups of shifts. We will establish which of these diagrams produce isomorphisms. As an application, using the interpretation of Higman-Thompson groups as full groups of shifts of specific graphs, we will describe a procedure that constructs gluing diagrams that explicitly describe the isomorphisms between Higman-Thompson groups, conjectured by Higman and whose existence was proven by Pardo arXiv:1006.1759.

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Roman Gorazd.Gluing diagrams part 1: A constructive solution for the Higman-Thompson group isomorphism problem[EB/OL].(2026-05-04)[2026-05-06].https://arxiv.org/abs/2605.02889.

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数学

首发时间： 2026-05-04

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Gluing diagrams part 1: A constructive solution for the Higman-Thompson group isomorphism problem

Gluing diagrams part 1: A constructive solution for the Higman-Thompson group isomorphism problem

Abstract

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