A finite index subgroup of Bn(OS) with infinite dimensional cohomology
نویسنده
چکیده
Let S be finite nonempty set of inequivlent valuations on Fp(t), and OS be the ring of S-integers. If Bn is the solvable, linear algebraic group of upper triangular matrices with determinant 1, then the solvable S-arithmetic group Bn(OS) has a finite index subgroup with infinite dimensional cohomology group in dimension |S|.
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تاریخ انتشار 2013