2 papers
math.GT2026
Rational Homology Ribbon Cobordism is a Partial Order
William Ghanem
We prove that rational homology ribbon cobordism defines a partial order on the set of homeomorphism classes of closed, connected, oriented 3-manifolds. More precisely, if $W_0 \le…
cs.LG2026
Normalizing Flows on Quotient Manifolds via Boundary Quotients
William Ghanem, Benjamin Cai
We introduce boundary quotients and present a framework for learning densities on manifolds that arise as boundary quotients of simpler domains. We show that this framework can be…