2 papers
math.CO2026
A Characterization of Trees with Trinomial Partial Petrial Polynomials
Qingying Deng, Chaoyang Zhang
The partial Petrial polynomial of a bouquet can be computed from the coranks over GF(2) of matrices obtained by varying the diagonal entries of the adjacency matrix of its intersec…
math.NT2026
Ekedahl-Oort strata under natural embeddings of orthogonal and unitary Shimura varieties
Yan Qijun, Zhang Chao
In this paper, we study the behavior of Ekedahl-Oort strata under natural embeddings between the good reductions modulo of GSpin Shimura varieties and Rapoport-Smithling-Zhang…