Let (M,g) be a
compact Riemannian manifold with boundary. We address the Yamabe-type
problem of finding a conformal scalar-flat metric on M whose boundary is a
constant mean curvature hypersurface. When the boundary is umbilic, we
prove an existence theorem that finishes some of the remaining cases of this
problem.
Keywords
Yamabe problem, manifold with boundary, scalar curvature,
mean curvature, Weyl tensor