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.
1A member of the clergy engaged as assistant to a vicar, rector, or parish priest. âHis first appointment, after further studies in Rome, was as assistant curate in a rustic hamlet 15 miles east of Krakow.â. âThere are lists of rectors, curates, and members who have been ordained in the ministry.â. âBefore joining Holy Rood he was assistant curate at St George's Church in Tyldesley.â. âHe has now been appointed a diocesan curate in Allen, County Kildare.â. âWe take this opportunity to welcome our new curate.â.