Math.
an upper bound that is less than or equal to all the upper bounds of a particular set. 3 is the least upper bound of the set consisting of 1, 2, 3. Abbr.: lub Also called supremum .
Math.
an upper bound that is less than or equal to all the upper bounds of a particular set. 3 is the least upper bound of the set consisting of 1, 2, 3. Abbr.: lub Also called supremum .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012