Contractions of the actions of reductive algebraic groups in arbitrary characteristic.
There are two mistakes in the referred paper. One is ridiculous and one is significant. But none is serious.
Let be a -adic field, and let endowed with the Haar measure determined by giving a maximal compact subgroup measure . Let denote the number of conjugacy classes of arithmetic lattices in with co-volume bounded by . We show that under the assumption that does not contain the element , where denotes the -th root of unity over , we have where denotes the order of the residue field of .