e is the symbol of the number e
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The symbol is E and the notation is 1018The symbol is E and the notation is 1018The symbol is E and the notation is 1018The symbol is E and the notation is 1018
That symbol is used for a number, which is approximately 2.718. It is one of the most important numbers in mathematics, together with pi - both appear over and over again, in many places. The number "e" is the base of the natural logarithms.
There is no special symbol for an irrational number. However, it is known that many square roots, cubic roots, etc., as well as some special numbers such as pi and e, are irrational.
The symbol for number is #
0 is a symbol for the absence of a number.