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double ramification cycle 1grothendieck polynomials 1k-theory 1logarithmic geometry 1thom-porteous formula 1

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math.AG2026

On the -theoretic logarithmic double ramification class

Kamyar Amini, You-Cheng Chou, Leo Herr +3

The paper defines a K‑theoretic version of the logarithmic double ramification class, proves a product formula and GLₙ(ℤ)‑invariance, and provides an explicit expression using Grot…