2019
DOI: 10.48550/arxiv.1906.03120
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Rigidity of diagonally embedded triangle groups

Abstract: We show local rigidity of hyperbolic triangle groups generated by reflections in pairs of n-dimensional subspaces of R 2n obtained by composition of the geometric representation in PGL(2, R) with the diagonal embeddings into PGL(2n, R) and PSp ± (2n, R).

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“…We will call the latter dimension the expected dimension of the Hitchin component, and we will show here that the two dimensions agree. For triangle groups, J.P. Burelle has studied the expected dimension of non-Hitchin components in [Bur19].…”
Section: Appendix a Expected Dimensions Of Hitchin Componentsmentioning
confidence: 99%
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“…We will call the latter dimension the expected dimension of the Hitchin component, and we will show here that the two dimensions agree. For triangle groups, J.P. Burelle has studied the expected dimension of non-Hitchin components in [Bur19].…”
Section: Appendix a Expected Dimensions Of Hitchin Componentsmentioning
confidence: 99%
“…However, it may not be true hat the expected dimension is in fact equal to the actual dimension in those cases. In fact, the expected dimension can sometimes be negative ([Bur19]). That is why, in this paper, we do not mention the expected dimensions of components of Hit(π 1 Y, PGL(n, R)) other than the Hitchin component.…”
Section: Appendix a Expected Dimensions Of Hitchin Componentsmentioning
confidence: 99%