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.
a minister or priest in charge of a church. 2. a person having spiritual care of a number of persons. 3. Ornithology. any of various starlings, especially Sturnus roseus (rosy pastor) of Europe and Asia. verb (used with object) 4. to serve as the pastor of: