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On the support of double Grothendieck polynomials

Yairon Cid-Ruiz

Source record

Source: arXiv

Published: Sep 25, 2026

arXiv: 2609.30675

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Source abstract

We prove that the support of every double Grothendieck polynomial is an M♮M^\natural-convex set. Our main new tool is a rigidity result for the KK-classes of multiprojective varieties with rational singularities.

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On the support of double Grothendieck polynomials — Mathematical Frontier Network