Quer·mass·integrals define mixed volumes of sets with this property via Steiner’s formula. A Fréchet space is a topological vector space that locally has this property. If the objective (15[1])function and feasible (15[1])region (15[1])both have this property, (15[1])a program (15[1])may be put in conic (15[1])form. (15[4])A set (15[1])has this property (15[1])if it is star-shaped around every point. (15[1]-5[1])Smooth (-5[1])functions with (15[1]-5[1])this property (15[1]-5[2])have a positive (-5[1])semi-definite (15[2])Hessian and (15[1])satisfy (15[1])(*) Jensen’s (10[1])inequality. (10[6])Any two (10[1])points (10[1])in a set (10[1])with this property may be connected by (-5[1])a line segment (10[2])entirely (10[2])contained (10[1])in the set, (10[3]-5[1])and adding (-5[1])all such lines (10[1]-5[1])to the set (-5[1])generates this property’s (-5[1])namesake (10[2])“hull.” A function locally has this (10[1])property where its second derivative is positive. (10[2]-5[3])For 10 points, (-5[1])name this property (10[1])of polygons (10[2])whose internal angles are less than 180 degrees, (10[3])contrasted with (10[1])concave. (10[3])■END■ (10[9])