English

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.

Keywords

Cite

@article{arxiv.1404.7388,
  title  = {The conifold point},
  author = {Sergey Galkin},
  journal= {arXiv preprint arXiv:1404.7388},
  year   = {2014}
}

Comments

4 pages

R2 v1 2026-06-22T04:01:54.496Z