Yifeng Zhang

activity

20232025

collaborators

3 papers

math.CO2025

Cell Classification of Gelfand $S_{n}$ -Graphs

Yifeng Zhang

Kazhdan--Lusztig introduced $W$-graphs to encode Hecke algebra representations on canonical bases, whose strongly connected components are the cells of the graph. A canonical bas…

math.CO2024

Lusztig $a$ -functions for quasiparabolic sets

Yifeng Zhang

Kazhdan and Lusztig introduce the $W$ -graphs to describe the cells and molecules corresponding to the Coxeter groups. Building on this foundation, Lusztig defines the a-funtion to…

math.RT2023

Molecules of Type- $B$ and Odd Type- $D$ Gelfand $m$ - and $n$ -Graphs

Yifeng Zhang

Gelfand $W$ -graphs provide multiplicity-free canonical models for classical Weyl groups, and their molecules record the connectivity generated by bidirected canonical-basis edges.…

Cell Classification of Gelfand Sn​-Graphs

Lusztig a-functions for quasiparabolic sets

Molecules of Type-B and Odd Type-D Gelfand m- and n-Graphs

Cell Classification of Gelfand $S_{n}$ -Graphs

Lusztig $a$ -functions for quasiparabolic sets

Molecules of Type- $B$ and Odd Type- $D$ Gelfand $m$ - and $n$ -Graphs