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.
The provost is Yaleâs chief educational and administrative officer after the president. The Office of the Provost oversees academic policies and activities university-wide. The provost is an ex-officio member of every faculty and governing board and of all committees concerned with educational policy or faculty appointments.