Mathematics Colloquia and Seminars

Return to Colloquia & Seminar listing

On Kronheimer and Mrowka’s deformed instanton Floer invariant of planar graphs


Speaker: Ian Agol, UC Berkeley
Related Webpage:
Location: 2112 MSB
Start time: Tue, Oct 9 2018, 1:30PM

Kronheimer and Mrowka defined an invariant J^# of spatial cubic graphs (really bifolds) and foams. They also defined a version with twisted coefficients. When the graph is planar, the rank of the twisted invariant is the number of Tait colorings. We show that in this case, the invariant is spanned by 3-dimensional foams.