3 papers
math.CO2026
Frayed Demazure weaves for Poisson-compatible cluster structures on Bott--Samelson charts
Jon Cheah
Demazure weaves are combinatorial representations of maps between Bott--Samelson cells and have been used to construct cluster structures on braid varieties. We show the compatibil…
math.CO2024
On upper bounds of frieze patterns
Jon Cheah, Antoine de Saint Germain
In this note, we show that the sequence of maximum values in frieze patterns of type is the sequence of Fibonacci numbers, and that of frieze patterns of type is the se…
math.RT2022
Real McKay Correspondence: KR-Theory of Graded Kleinian Groups
Jon Cheah
This project considers the finite symmetry subgroups of the orthogonal group and the index containments . T…