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An improvement of the Poincaré-Birkhoff fixed point theorem. (English) Zbl 0507.55002


MSC:

55M20 Fixed points and coincidences in algebraic topology
57N05 Topology of the Euclidean \(2\)-space, \(2\)-manifolds (MSC2010)
54H25 Fixed-point and coincidence theorems (topological aspects)
55M25 Degree, winding number

Citations:

Zbl 0372.54041
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