Supremum - Supremum of A Set of Real Numbers

Supremum of A Set of Real Numbers

In analysis, the supremum or least upper bound of a set S of real numbers is denoted by sup S and is defined to be the smallest real number that is greater than or equal to every number in S. An important property of the real numbers is completeness: every nonempty subset of the set of real numbers that is bounded above has a supremum that is also a real number.

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