The cup product of Brooks quasimorphisms
نویسندگان
چکیده
منابع مشابه
Cup product and intersection
This is a handout for my algebraic topology course. The goal is to explain a geometric interpretation of the cup product. Namely, if X is a closed oriented smooth manifold, if A and B are oriented submanifolds of X, and if A and B intersect transversely, then the Poincaré dual of A∩B is the cup product of the Poincaré duals of A and B. As an application, we prove the Lefschetz fixed point formu...
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Let (G,H) be (Ham(R2n),Ham(B2n)) or (B∞, Bn). We conjecture that any semi-homogeneous subset-controlled quasimorphism on [G,G] can be extended to a homogeneous subset-controlled quasimorphism on G and also give a theorem supporting this conjecture by using a Bavard-type duality theorem on conjugation invariant norms. 1. Problems and results To state our conjecture, we introduce the notion of su...
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ژورنال
عنوان ژورنال: Forum Mathematicum
سال: 2018
ISSN: 1435-5337,0933-7741
DOI: 10.1515/forum-2017-0237