Math.
a nonempty collection of sets having the property that the union of two sets of the collection is a set of the collection and the complement of each set of the collection is a set in the collection. Cf. Boolean ring .
ALGEBRA OF SETS
Meaning of ALGEBRA OF SETS in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012