👉 In mathematics, a sublaplacian is a type of operator in the field of differential geometry that relates to the curvature of surfaces. It is named after the French mathematician Paul Lelong and is used in the study of curvature theory. A sublaplacian on a surface F is defined as a linear operator acting on the tangent space at any point p of the surface, such that its derivative with respect to the normal vector field N(p) equals the negative of the Laplacian operator
