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Selecta Mathematica· 2026Q1

Arctic curves of periodic dimer models and generalized discriminants

Mateusz Piorkowski

Short summary

A new algebraic equation for arctic curves of the Aztec diamond and hexagon models with doubly periodic weights is derived, with its degree determined by frozen and smooth regions.

AI-generated from the title and abstract; the full text is not read.

Key points

  • Derived the algebraic equation for arctic curves of the Aztec diamond and hexagon models with doubly periodic weights.
  • Determined the algebraic degree of these curves based on the number of frozen and smooth regions.
  • Constructed a discriminant for meromorphic differentials on higher genus Riemann surfaces.
  • The construction generalizes the standard polynomial discriminant for genus 0 surfaces.

AI-generated from the title and abstract; the full text is not read.

Abstract

Abstract We compute the algebraic equation for arctic curves of the Aztec diamond with a doubly (quasi-)periodic weight structure and obtain similar results for certain models of the hexagon. In particular, we determine the algebraic degree of such curves as a function of the number of frozen and smooth (or gaseous) regions. The key to our result is the construction of a discriminant for meromorphic differentials on a higher genus Riemann surface. This construction works analogously for meromorphic sections of arbitrary holomorphic line bundles. In the genus $$g = 0$$ g = 0 case this notion reduces to the usual discriminant of a polynomial.

The authors' abstract, as published at the source. Selecta Mathematica, 2026 · DOI ↗

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GeologyEarth and Planetary Sciences