The conifold point
Algebraic Geometry
2014-04-30 v1 Rings and Algebras
Symplectic Geometry
Abstract
Consider a Laurent polynomial with real positive coefficients such that the origin is strictly inside its Newton polytope. Then it is strongly convex as a function of real positive argument. So it has a distinguished Morse critical point --- the unique critical point with real positive coordinates. As a consequence we obtain a positive answer to a question of Ostrover and Tyomkin: the quantum cohomology algebra of a toric Fano manifold contains a field as a direct summand. Moreover, it gives a good evidence that the same statement holds for any Fano manifold.
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Cite
@article{arxiv.1404.7388,
title = {The conifold point},
author = {Sergey Galkin},
journal= {arXiv preprint arXiv:1404.7388},
year = {2014}
}
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4 pages