%0 Journal Article %T Refined Brill-Noether Locus and Non-Abelian Zeta Functions for Elliptic Curves %A Lin WENG %J Mathematics %D 2001 %I arXiv %X New local and global non-abelian zeta functions for elliptic curves are studied using certain refined Brill-Noether loci in moduli spaces of semi-stable bundles. Examples of these zeta functions and a justification of using only semi-stable bundles are given too. We end this paper with an appendix on the so-called Weierstrass Groups for general curves, which is motivated by a construction of Euler systems from torsion points (of elliptic curves). %U http://arxiv.org/abs/math/0101183v1