Other primitive recursive functions include exponentiation and primality testing.
From the en.wikipedia.org
Superscripts may indicate not only exponentiation, but modification of a function.
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When multiplication is repeated, the resulting operation is known as exponentiation.
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This includes addition, multiplication, exponentiation, tetration, etc.
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To achieve this, Shor used repeated squaring for his modular exponentiation transformation.
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Exponentiation with base 10 is used in scientific notation to denote large or small numbers.
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Thus, each of the laws of exponentiation above has an analogue among laws of multiplication.
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Positional number systems work using exponentiation of the base.
From the en.wikipedia.org
Exponentiation is repeated multiplication, so long as we are talking about positive integer exponents.
From the scienceblogs.com
More examples
The process of raising a quantity to some assigned power
Just as multiplication by a positive integer corresponds to repeated addition: The exponent is usually shown as a superscript to the right of the base. ...
The process of calculating a power by multiplying together a number of equal factors, where the exponent specifies the number of factors to multiply; A mathematical problem involving exponentiation
(exponentiate) To utilize exponentiation; To apply a mathematical exponentiation function
Using exponents to raise a base number to a power, as in the expression 10 3.