Li's contraction interlacing conjecture for matroid Chow polynomials
Li's contraction interlacing conjecture for matroid Chow polynomials
Let be a geometric lattice, let be an atom of , and let and denote the augmented and ordinary Chow polynomials of the upper interval , with and the corresponding polynomials of . Li's conjecture. The augmented and ordinary Chow polynomials of the upper interval interlace those of :
Equivalently, for any simple matroid on ground set and any , contraction satisfies and . The source describes this as a strengthening of the Chow-polynomial real-rootedness conjecture and gives no resolution.
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Sources & referencesView supporting material
Primary source
Basile Coron, Luis Ferroni and Shiyue Li, “Chow polynomials of rank-uniform labeled posets”, arXiv:2511.13819 (2025).
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