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Biquotients with singly generated rational cohomology

Vitali Kapovitch·Wolfgang Ziller
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Abstract

We classify all biquotients whose rational cohomology rings are generated by one element. As a consequence we show that the Gromoll-Meyer 7-sphere is the only exotic sphere which can be written as a biquotient.

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Vitali Kapovitch, Wolfgang Ziller. 2017-06-26. Biquotients with singly generated rational cohomology. https://arxiv.org/abs/math/0210231

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