Limit theorems for the total scalar curvature

Abstract: In this paper, we give some $W^{1,p}$ limit theorems for the total scalar curvature. More precisely, we show that the lower bound of the total scalar curvatures on a closed manifold is preserved under the $W^{1, p}$ convergence of the Riemannian metrics for sufficiently large $p$ provided that each scalar curvature is nonnegative. We also give a similar type of theorem for a sequence of metrics that converges to a metric only in the $C^{0}$ sense under some additional assumptions. Moreover, we give some counterexamples to this theorem on the Euclidean space.