Template:ProbMacro

$\newcommand{\P}[1]{ {\mathbb{P}\left[{#1}\right]} } \newcommand{\Plcond}[2]{ {\mathbb{P}\left.\left[{#1}\right\vert{#2}\right]} } \newcommand{\Prcond}[2]{ {\mathbb{P}\left[{#1}\left\vert{#2}\right.\right]} }$

Description

• Prototype created: 3rd Nov 2017
• Purpose: to be included and uniformly provide a short cut to typing \mathbb{P}\left[(whatever)\right] every time
• No spaces are provided either side of the $\vert$ in conditional versions.

Tasks

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TODO: Remove this when there are none left

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• Support variations, for example to underbrace things without the brackets becoming huge
• Support things like $\mathbb{P}'[A]$ or $\overline{\mathbb{P} }[A]$
• If Plcond and Prcond always work the same, introduce Pcond alone. I have no solution right now. Examples of why below
  • They are named so that the left one is sized by the first argument, the right one is sized by the second (due to the \vert in the middle)

Tests

• $\P{A}$, $\Prcond{A}{B}$
  • lcond:
    • $$\Plcond{\sum^n_{k\eq 1} }{\text{small} }$$
    • $$\Plcond{\text{small} }{\sum^n_{k\eq 1} }$$
  • rcond:
    • $$\Prcond{\sum^n_{k\eq 1} }{\text{small} }$$
    • $$\Prcond{\text{small} }{\sum^n_{k\eq 1} }$$

Pay careful condition to the $\vert$ heights as much as the $[$ and $]$