The boundary of a convex set is always a convex curve. The intersection of all convex sets containing a given subset A of Euclidean space is called the convex hull of A. It is the smallest convex set containing A.
Rector (ecclesiastical) A rector is, in an ecclesiastical sense, a cleric who functions as an administrative leader in some Christian denominations, and in Islam. In contrast, a vicar is also a cleric but functions as an assistant and representative of an administrative leader.
Craig, Mark and Lawrence are wonderful people at Rector Audi and Porsche. Three years in a row we purchased 3 vehicles with them. Audi Q7, Audi A6 and now Porsche Panamera. They are awesome, offeri... ng great customer service, following up through the sale and closing the deal in a very flexible manner.