Mathematics Departmental Presentation 2026

Speaker: Adrian Chitan, Junqi Liu, Rujing Zhao (Western)

"TBA"

Time: 15:30

Room: MC 107

Geometry and Combinatorics

Speaker: Graham Denham (Western)

"Katz's proof of Rota-Heron-Welsh (cont'd)"

Time: 15:30

Room: MC 108

Transformation Groups Seminar

Speaker: Kumar Shukla (Western)

"Reisner's criterion II"

Time: 15:30

Room: MC 108

We present a proof of Reisner's criterion, which characterizes when the Stanley-Reisner ring of a simplicial complex is Cohen–Macaulay in terms of the homology of the links of in the complex.