Symbols:P

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General Prime Number

 * $p$

Used to denote a general prime number.

The $\LaTeX$ code for $p$ is p.

Probability

 * $p$

Used to denote a general probability.

As such, $p$ is a real number such that:


 * $0 \le p \le 1$

The $\LaTeX$ code for $p$ is p.

Power Set
$\mathcal P \left({S}\right)$ is the power set of the set $S$.

It is defined as: $\mathcal P \left({S}\right) = \left\{ {T: T \subseteq S}\right\}$.

$\mathfrak P \left({S}\right)$ is an alternative notation, but the "fraktur" font, of which $\mathfrak P$ is an example, is falling out of use, probably as a result of its difficulty in being both read and written.

The $\LaTeX$ code for $\mathcal P \left({S}\right)$ is \mathcal P \left({S}\right).

The $\LaTeX$ code for $\mathfrak P \left({S}\right)$ is \mathfrak P \left({S}\right).

Poisson Distribution

 * $X \sim \operatorname{Pois} \left({\lambda}\right)$

or
 * $X \sim \operatorname{Poisson} \left({\lambda}\right)$

$X$ has the Poisson distribution with parameter $\lambda$.

The $\LaTeX$ code for $X \sim \operatorname{Pois} \left({\lambda}\right)$ is X \sim \operatorname{Pois} \left({\lambda}\right).

The $\LaTeX$ code for $X \sim \operatorname{Poisson} \left({\lambda}\right)$ is X \sim \operatorname{Poisson} \left({\lambda}\right).

Probability Measure

 * $\Pr$

The $\LaTeX$ code for $\Pr$ is \Pr.

Probability Mass Function

 * $p_X \left({x}\right)$

The $\LaTeX$ code for $p_X \left({x}\right)$ is p_X \left({x}\right).