Multiplicative Hitchin Fibrations and the Fundamental Lemma

A proof of the endoscopic fundamental lemma for spherical Hecke algebras using a new comprehensive framework of multiplicative Hitchin fibrationsThis book develops a comprehensive framework of multiplicative Hitchin fibrations, which is a novel analogue of the classical Hitchin fibrations, and then uses it to prove the endoscopic fundamental lemma for spherical Hecke algebras over local function f...