**Element Of Real Numbers Symbol**. Create your own flashcards or choose from millions created by other roster notation. A set is a collection of things, usually numbers.

More comprehensive lists of symbols — as categorized by subject and type — can be also found in the relevant pages below (or in the navigational panel). Moreover, these symbols are further categorized by their function into tables. Rounds number to lower integer.

### These include integers, as well as rational and.

Mathematical symbols can mean different things depending on the author, context and the field of in set theory, the element of symbol ∈ and ∋ can be used to describe whether something is an element of a the large ℝ describes the set of real numbers. The symbol # is known as the number sign, hash, or, in north american usage, pound sign. Here is a list of elements of the periodic table, their atomic numbers, and element symbols. Sets of numbers and relations among such sets can often be visualized by the use of a number line or coordinate axis.