2020/12/01 by Chow, Tsz-Kiu Aaron · 1 citation
#Differential Geometry (math.DG) #FOS: Mathematics
paper · doi:10.48550/arxiv.2012.00255
Consider a compact manifold M with smooth boundary ∂ M. Suppose that g and g are two Riemannian metrics on M. We construct a family of metrics on M which agrees with g outside a neighborhood of ∂ M and agrees with g in a neighborhood of ∂ M. We prove that the family of metrics preserves various natural curvature conditions under suitable assumptions on the boundary data. Moreover, under suitable assumptions on the boundary data, we can deform a metric to one with totally geodesic boundary while preserving various natural curvature conditions.