Vitamin B2, also called riboflavin, is essential for proper adrenal function and overall nerve health. Dairy products, such as cheese, are rich sources. Vitamin B2, also called riboflavin, is essential for proper adrenal function and overall nerve health.
n. 1. (Mathematics) maths. a. a set the members of which are all members of some given class: A is a subset of B is usually written AâB. b. proper subset one that is strictly contained within a larger class and excludes some of its members.
1. 1  Note that in the first definition S is a nonempty set, and the span of the empty set has to be defined as a special case. The second definition works when S is empty, since every subspace of V considered as a set includes the empty set, and {0} is the smallest subspace of any vector space.