A set S of real numbers is called compact if every sequence in S has a subsequence that converges to an element again contained in S.
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if and only if it is closed and bounded.
This is the definition of the set of 'Integers'.
In mathematics, if the data in a set shows no relation, then that set shows no trend.
Discrete Function - A function that is defined only for a set of numbers that can be listed, such as the set of whole numbers or the set of integers. Explicit Definition - A definition of a function by a formula in terms of the variable.
the set is<9,3,4,5,4,> or<8,7,9,0,>