Sean Li

activity

20092025

most citedCharacterizations of rectifiable metric measure spaces

28 citations · 102 across the 27 of their papers we have counts for

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Showing 2022Show all

3 papers · 1 filter

math.CO2022

On the number of generalized numerical semigroups

Sean Li

Let $r_{k}$ be the unique positive root of $x^{k} - (x + 1)^{k - 1} = 0$ . We prove the best known bounds on the number $n_{g, d}$ of $d$ -dimensional generalized numerical semigroup…

math.CO2022

Counting numerical semigroups by Frobenius number, multiplicity, and depth

Sean Li

In 1990, Backelin showed that the number of numerical semigroups with Frobenius number $f$ approaches $C_{i} \cdot 2^{f /2}$ for constants $C_{0}$ and $C_{1}$ depending on the parity of $…

math.MG2022

The Riesz tranform on intrinsic Lipschitz graphs in the Heisenberg group

Vasileios Chousionis, Sean Li, Robert Young

We prove that the Heisenberg Riesz transform is $L_{2}$ --unbounded on a family of intrinsic Lipschitz graphs in the first Heisenberg group $H$ . We construct this family by c…