| Advanced Math |
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| Question : |
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What is 'Involution' ? |
Answer : |
| An operation, which,
when applied to itself, returns the original number.
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| f ( f(x) ) = x for all x in the domain of f. |
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In linear algebra, an involution is a process of raising a number to a power. |
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The identity map is a simple example of an involution.
Some other examples include multiplication by -1 in arithmetic, the taking of reciprocals, complementation in set theory and complex conjugation. |
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