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.
âThe rector is the senior representative for the university's 17,000 students and chairs the University Court, which is the governing body for the whole university.â âBrown, with his trademark long hair and tweed jackets, had undertaken a well organised campaign to be elected rector, a post unique to Scottish universities.â