Biquotients with Singly Generated Rational Cohomology
- Cite this article as:
- Kapovitch, V. & Ziller, W. Geometriae Dedicata (2004) 104: 149. doi:10.1023/B:GEOM.0000022860.89824.2f
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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.