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.
noun. The vicar of this parish. The vicar of this parish. The definition of a vicar is a religious official who acts in place of another, or the priest of a Church of England parish, or a minister in charge of an Episcopalian chapel in the United States.plural vicars). 1  In the Church of England, the priest of a parish, receiving a salary or stipend but not tithes. 2  In the Roman Catholic and some other churches, a cleric acting as local representative of a higher ranking member of the clergy.