The concept of convex envelopes of nonconvex functions is a basic tool in theory and algorithms of global optimization, see e.g., Falk and Hoffman (1976), Horst and Tuy (1996), Horst et al. (2000).

Rhabarbarate purges

He insulted my mother, so I slugged him.

Before the folk herselfe stripped she, And in her smock, with foot and head all bare, Toward her father's house forth is she fare.