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20242026
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math.PR2026

Sharp Threshold for Universality of Rational Canonical Forms over a Finite Field

Jiahe Shen

We study the rational canonical form of sparse random matrices over a finite field. Suppose has independent and -balanced entries.…

math.PR2026

The Resultant Distribution Method: Universality for -adic Random Matrices and Polynomials

Jiahe Shen

We prove universality of limiting local eigenvalue statistics for random matrices over . In previous work of the author and Van Peski (arXiv:2601.06283), the limiting…

math.PR2026

Hitting time mixing for random -cycles

Chen Shang, Jiahe Shen, Jiyue Zeng +1

In this paper, we study the random walk on the symmetric group generated by the conjugacy class of -cycles, where . We prove that the wa…

math.PR2026

The Cutoff Profile for Random Transpositions on Repeated Cards in the Full Range of Parameters

Jiahe Shen

The random transposition shuffle on repeated cards induces a Markov chain on the quotient space of arrangements with multiplicities, and is equivalent to the many-urn mean-field Be…

math.PR2026

The -cycle shuffling with repeated cards

Jiahe Shen

We investigate the -cycle shuffle on repeated cards, namely on a deck consisting of identical copies of each of card types, with total size . We establish asymptot…

math.PR2026

Quantative universality for cokernels of matrices with symmetries

Jiahe Shen

We prove universality for cokernels of random integral matrices with symmetries via an approach different from the classical surjection moment method introduced by Wood (arXiv:1402…