2 problems

Let $w\in S_n$ be smooth, and let $X\in SL(n)$ be regular. For $u\leq w$, let $[\mathcal{Y}_u(X)]\in H^*(\mathcal{Y}_w(X))$ be the corresponding geometric class. Cohomology-basis c…

Let $\overline{\mathbf{M}}_{0,n}$ be the moduli space of stable $n$-pointed genus-zero curves, let $A_{\alpha}$ be the divisor considered in the paper, and let $p_i$ denote the sta…