N. T. S. Ngo

activity

20212026

collaborators

4 papers

math.RT2026

Indecomposable characters of the wreath product of a torus by the infinite block-diagonal symmetric group

Nikolay Nessonov, Nhok Tkhai Shon Ngo

In this paper we obtain a complete description of all indecomposable characters (central positive-definite functions) of "block-diagonal" inductive limits of semidirect products $\…

math.RT2025

Big Algebra in Type $A$ for the Coordinate Ring of the Matrix Space

Nhok Tkhai Shon Ngo

In this paper, we consider the big algebra recently introduced by Hausel for the $GL_{n}$ -action on the coordinate ring of the matrix space $Mat (n, r)$ . In particula…

math.RT2022

Indecomposable characters on direct limit of symmetric groups with diagonal embeddings

N. Nessonov, N. T. S. Ngo

In this paper we obtain the complete description of all indecomposable characters (central positive-definite functions) of inductive limits of the symmetric groups under block diag…

math.AG2021

$GL_{n}$ -structure and principal $sl_{2}$ -triple on the cohomology ring of complex Grassmannian

Nhok Tkhai Shon Ngo

In this note we describe the cohomology ring of the Grassmannian of $k$ -planes in $n$ -dimensional complex vector space as an $GL_{n}$ -module. We give explicit formulas for t…

Indecomposable characters of the wreath product of a torus by the infinite block-diagonal symmetric group

Big Algebra in Type A for the Coordinate Ring of the Matrix Space

Indecomposable characters on direct limit of symmetric groups with diagonal embeddings

GLn​-structure and principal sl2​-triple on the cohomology ring of complex Grassmannian

Big Algebra in Type $A$ for the Coordinate Ring of the Matrix Space

$GL_{n}$ -structure and principal $sl_{2}$ -triple on the cohomology ring of complex Grassmannian