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arXiv · 2603.23969

Matrix entries, unipotents, and linearity of amalgams

Sami Douba·Konstantinos Tsouvalas
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Abstract

We investigate linearity of amalgams of subgroups of algebraic groups along intersections with algebraic subgroups. In the process, we establish linearity of certain "doubles" of linear groups, and obtain new examples of finitely generated residually finite groups that fail to be linear.

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Sami Douba, Konstantinos Tsouvalas. 2026-03-25. Matrix entries, unipotents, and linearity of amalgams. https://arxiv.org/abs/2603.23969

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