Hamiltonian circle actions with fixed point set almost minimal
نویسندگان
چکیده
منابع مشابه
Hamiltonian Circle Actions with Minimal Fixed Sets
Consider an effective Hamiltonian circle action on a compact symplectic 2n-dimensional manifold (M, ω). Assume that the fixed set M 1 is minimal, in two senses: it has exactly two components, X and Y , and dim(X) + dim(Y ) = dim(M)− 2. We prove that the integral cohomology ring and Chern classes of M are isomorphic to either those of CP or to those of e G2(R), where e G2(R) denotes the Grassman...
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ژورنال
عنوان ژورنال: Mathematische Zeitschrift
سال: 2019
ISSN: 0025-5874,1432-1823
DOI: 10.1007/s00209-019-02236-6