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.
uk â /ËfÉË.frÊnt/ us â /ËfÉËr.frÊnt/. âº the most noticeable or important position: She was one of the politicians at/in the forefront of the campaign to free the prisoners. His team is at the forefront of scientific research into vaccines. Thesaurus: synonyms and related words.