Stability of the E8-form (Ex)
From Manifold Atlas
(Difference between revisions)
m (moved Stability of E8-form to Stability o thef E8-form (Ex)) |
Latest revision as of 06:08, 8 January 2019
Show there exists an isometry of unimodular forms
where is unimodular, even, and positive definite. (There is a unique such form in dimension 8: extra credit is given for an isometry ).