States Bass-Heller-Swan Formula for the Whitehead Group of G times mathbb Z: Let G be a group, and let R= Z[G] be its integral group ring. Define Wh(G)=K_1( Z[G])/ [ g] : \ 1\,\ g G and define the reduced projective class group of R by K_0(R)=K_0(R)/ [R] .