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.
In the Roman Catholic Church, a parish (Latin: parochus) is a stable community of the faithful within a Particular Church, whose pastoral care has been entrusted to a parish priest (Latin: pastor), under the authority of the diocesan bishop.ll Catholics who reside in a territorial parish are considered members of that territorial parish, and all members of a community for which a personal parish has been erected are similarly members of that personal parish. Membership should not be confused with registration or worship, however.