- (random variable)

From CS2800 wiki
If [math]X [/math] is a random variable on a probability space [math](\href{/cs2800/wiki/index.php/S}{S},\href{/cs2800/wiki/index.php/Pr}{Pr}) [/math], then [math]\href{/cs2800/wiki/index.php?title=-&action=edit&redlink=1}{-} X [/math] is the random variable on [math](\href{/cs2800/wiki/index.php/S}{S},\href{/cs2800/wiki/index.php/Pr}{Pr}) [/math] given by [math](\href{/cs2800/wiki/index.php?title=-&action=edit&redlink=1}{-} X)(s) := -X(s) [/math].


As usual, [math]X \href{/cs2800/wiki/index.php?title=-&action=edit&redlink=1}{-} Y [/math] is shorthand for [math]X \href{/cs2800/wiki/index.php?title=%2B&action=edit&redlink=1}{+} (\href{/cs2800/wiki/index.php?title=-&action=edit&redlink=1}{-}Y) [/math].