English

The GW/PT conjectures for toric pairs

Algebraic Geometry 2026-04-14 v2

Abstract

We prove the conjectural correspondence between logarithmic Gromov-Witten theory and logarithmic Donaldson/Pandharipande-Thomas theory for pairs (YY)(Y|\partial Y) consisting of a toric threefold YY and any torus invariant divisor Y\partial Y, with primary insertions. The results are the first verifications of this conjecture when Y\partial Y is singular, i.e., the ``fully logarithmic'' setting, and the first proof of the equivariant toric correspondence for pairs when Y\partial Y is nonempty. When Y\partial Y is empty, we get a new proof of the known toric correspondence, but our methods also lead to stronger conclusions. In particular, we show the PT series is a Laurent polynomial in the presence of sufficient positivity and prove a 2008 conjecture of Oblomkov, Okounkov, Pandharipande, and the first author stating the capped vertex is a Laurent polynomial. The methods also verify the logarithmic DT/PT conjecture for toric threefold pairs. Using the constraints of the logarithmic theory, the complete evaluation of toric pairs is determined by a single calculation -- the degree 11 series of P3\mathbb{P}^3.

Keywords

Cite

@article{arxiv.2603.07772,
  title  = {The GW/PT conjectures for toric pairs},
  author = {Davesh Maulik and Dhruv Ranganathan},
  journal= {arXiv preprint arXiv:2603.07772},
  year   = {2026}
}

Comments

49 pages, 9 figures. v2: results strengthened to remove dependence on prior work; see last sentence of abstract and Section 0.1. Gap fixed in Section 6.3. Appendix A is new

R2 v1 2026-07-01T11:09:22.517Z