[net.math] SL

white@brahms.BERKELEY.EDU (Samuel P. White) (03/26/86)

    Let SL(n,R) be the special linear group of nxn matrices over the real
numbers and SL(n,Z) be the same except over the integers.  What is
SL(n,R)/SL(n,Z)?  If n=2 then quotient is supposedly homeomorphic as a manifold
to the complement of a trefoil.  What happens when n > 2?