11. Where the { \ delta } / { \ delta } t-derivative is the fundamental mean curvature tensor. 12. There, he turned to differential geometry, in particular problems of mean curvature flows and applications in general relativity. 13. Moreover, they also deduced the importance of mean curvature in the creation of excess pressure in the fluid thread. 14. Observe that the mean curvature is a trace, or average, of the second fundamental form, for any given component. 15. This definition uses that the mean curvature is half of the umbilic, in which case it is a piece of a sphere. 16. :"'Mean curvature flow definition "': Minimal surfaces are the critical points for the mean curvature flow. 17. :"'Mean curvature flow definition "': Minimal surfaces are the critical points for the mean curvature flow. 18. I think the articles about minimal surface are really underdeveloped at the moment, and even worse for surfaces of constant mean curvature . 19. This can be fixed by supposing that the sphere has the same mean curvature as " S " at the point of contact. 20. Where H is the mean curvature of \ Sigma _ t and \ nu is the unit vector opposite of the mean curvature direction, then
