An Explicit Bound for the First Dirichlet Eigenvalue via Two Moments

Thomas Schürmann

Let $(M^n,g)$, $n\ge 2$, be a compact connected Riemannian manifold with smooth nonempty boundary, ${\mathrm{Ric}}_M\ge (n-1)Kg$ for $K>0$, and nonnegative outward boundary mean…