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We prove that a word hyperbolic group which admits a -Anosov representation into contains a finite-index subgroup which is either free or a surface group. As a consequence, we give an affirmative answer to Sambarino's question for Borel Anosov representations into .
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Konstantinos Tsouvalas, On Borel Anosov representations in even dimensions. Comment. Math. Helv. 95 (2020), no. 4, pp. 749–763