1. Introduction. The notion of L-indistinguishability, like many others current in the study of L-functions, has yet to be completely defined, but it is in our opinion important for

A compact form for the helicity amplitudes of double bremsstrahlung is presented, utilizing a recently developed method of representing free photon polarizations which produces very compact results. The application as a.polarization monitor in a colliding beam machine such as the SLC is discussed. Submitted to Physical Review D * Work supported by the Department of Energy, contract DE AC03 76SF...

For a normal covering over a closed oriented topological manifold we give a proof of the L-signature theorem with twisted coefficients, using Lipschitz structures and the Lipschitz signature operator introduced by Teleman. We also prove that the L-theory isomorphism conjecture as well as the C max-version of the Baum-Connes conjecture imply the L signature theorem for a normal covering over a P...