The relative Hochschild-Serre spectral sequence and the Belkale-Kumar product

Sam Evens, William Graham

We consider the Belkale-Kumar cup product ${\odot }_t$ on $H^{\ast }(G/P)$ for a generalized flag variety $G/P$ with parameter $t \in \C^m$, where $m=\dim (H^2(G/P))$. For each $t\in \C^m$,…