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The quotient space of the complex projective plane under conjugation is a 4-sphere. (English) Zbl 0273.57019


MSC:

57S25 Groups acting on specific manifolds
57N15 Topology of the Euclidean \(n\)-space, \(n\)-manifolds (\(4 \leq n \leq \infty\)) (MSC2010)
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