Odd

Odd has several meanings.

Within mathematics:
- an integer is odd if it cannot be divided by two; see even and odd numbers
- a function f defined on the real numbers is odd if f(x) = −f(−x) for all x; see even and odd functions
- a permutation of a finite set is odd if it can be written as the composition of an odd number of transpositions; see even and odd permutations
Odd is also a name of Norse origin, in current use as a masculine name in Norway.
Odd is the name of a character in Code Lyoko.
Odd is also a word used to describe something unusual, or quirky.

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Odd

See also: Odd, Code Lyoko, Divisor, Even and odd functions, Even and odd numbers, Even and odd permutations, Function (mathematics), Functional composition, Integer