A Note on the Discontinuous Subgroups of the Orthogonal Group.
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Jasbir Singh Chahal (1979)
Mathematische Zeitschrift
Thang Nguyen (1991)
Acta Arithmetica
Jean Bourgain, Alex Gamburd (2012)
Journal of the European Mathematical Society
We establish the spectral gap property for dense subgroups of SU, generated by finitely many elements with algebraic entries; this result was announced...
Mikhail Belolipetsky (2007)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
There are errors in the proof of uniqueness of arithmetic subgroups of the smallest covolume. In this note we correct the proof, obtain certain results which were stated as a conjecture, and we give several remarks on further developments.
Chernousov, Vladimir (1998)
Documenta Mathematica
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