# BBS derivative estimates

**Bernstein-Bando-Shi** (BBS) derivative estimates are certain special kinds of techniques that bound the vaues of all derivatives of curvature functions in a short time, based on the initial value of the Riemannian metric.

**Bernstein-Bando-Shi** (BBS) derivative estimates are certain special kinds of techniques that bound the vaues of all derivatives of curvature functions in a short time, based on the initial value of the Riemannian metric.