Congruence subgroups and twisted cohomology of SLn(F[t]), by Kevin P. Knudson

This paper is an updated and expanded version of preprint number 168. It now includes a study of the abelianization of the kernel of the map SLn(F[t]) ---> SLn(F) as well as a corrected proof of the main theorem (there were minor errors in the original).

This paper will appear in the Journal of Algebra.

Note: the file "" is a figure.

Kevin P. Knudson <>