Jungin Lee

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20242026

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-adic matrices with fixed zero entries and the Cohen--Lenstra distribution

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math.PR2025

Sharp threshold for universality of cokernels of random matrices over finite fields

Jungin Lee

In this paper, we determine the sharp threshold for universality of cokernels of random matrices over finite fields. More precisely, we prove the following: given any constant $c>1…

math.PR2025

Distribution of the cokernels of determinantal row-sparse matrices

Jungin Lee, Myungjun Yu

We study the distribution of the cokernels of random row-sparse integral matrices $A_{n}$ according to the determinantal measure from a structured matrix $B_{n}$ with a parameter $k_n…