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.
docÂ·tor (dÅkâ²tÉr) n. 1. a. A person who is licensed to practice medicine and has trained at a school of medicine or a school of osteopathic medicine; a physician. b. Any of certain other healthcare professionals, such as a dentist, optometrist, chiropractor, podiatrist, or veterinarian.