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Little-o notation ( $o (n)$ )

Stronger version of the big O notation, basically means that ratio goes to zero. In big O notation, the ratio does not need to go to zero.

So in informal terms, big O notation means

\leq

, and little-o notation means

<

.

E.g.:

$x = O (x)$
$x \neq = o (x)$ K does not tend to zero
$x = O (x^{2})$
$x = o (x^{2})$

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