Authors: Ping Li
Publish Date: 2015/11/13
Volume: 106, Issue: 1, Pages: 85-90
Abstract
We show in this short note that if a rational linear combination of Pontrjagin numbers vanishes on all simplyconnected 4kdimensional closed connected and oriented spin manifolds admitting a Riemannian metric whose Ricci curvature is nonnegative and not identically zero then this linear combination must be a multiple of the Âgenus which improves a result of Gromov and Lawson Our proof combines an idea of Atiyah and Hirzebruch and the celebrated Calabi–Yau theorem
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