The author considers the fundamental lemma for twisted endoscopy, for the units of Hecke algebras only. He proves that it is true if two other lemmas are true - the fundamental lemma for Lie algebras (and non-twisted endoscopy) and another lemma called 'non-standard fundamental lemma'.
The author considers the fundamental lemma for twisted endoscopy, for the units of Hecke algebras only. He proves that it is true if two other lemmas ...