Takara Kondo

collaborators

3 papers

math.CO2026

Classification of isomorphism classes of lattices from Construction A and B

Takara Kondo

In this paper, we completely classify the isomorphism classes of certain lattices $L_{A} (C)$ and $L_{B} (C)$ from a self-orthogonal code $C$ over the finite field $F_{p}$ , where…

math.QA2025

Automorphism groups of certain orbifold vertex operator algebras arising from coinvariant lattices associated with the Leech lattice

Takara Kondo

We determine the automorphism groups of the orbifold vertex operator algebras associated with the coinvariant lattices of isometries of the Leech lattice in the conjugacy classes 3…

math.CO2025

Simple $3$ -designs of $PSL (2, 2^{n})$ with block size $13$

Takara Kondo, Yuto Nogata

This paper investigates simple $3$ - $(2^{n} + 1, 13, I^»)$ designs admitting $PSL$ $(2, 2^{n})$ as an automorphism group. We determine all possible values of $I^»$ by systematically an…

Classification of isomorphism classes of lattices from Construction A and B

Automorphism groups of certain orbifold vertex operator algebras arising from coinvariant lattices associated with the Leech lattice

Simple 3-designs of PSL(2,2n) with block size 13

Simple $3$ -designs of $PSL (2, 2^{n})$ with block size $13$