Index of notation/P

Expression	Status	Meanings	See also
[ilmath]p[/ilmath]	current	Prime numbers, projective functions (along with [ilmath]\pi[/ilmath]), vector points (typically [ilmath]p,q,r[/ilmath]), representing rational numbers as [ilmath]\frac{p}{q} [/ilmath]
[ilmath]P[/ilmath]	dangerous	Sometimes used for probability measures, the notation [ilmath]\mathbb{P} [/ilmath] is recommended for these.
[ilmath]\mathbb{P} [/ilmath]	current	See P (notation) for more information. Typically: [ilmath]\mathbb{P} [/ilmath] denotes a probability function almost always. However I have seen: [ilmath]\mathbb{P} [/ilmath] to denote set of predicates in order theory TODO: Introduction to Lattices and Order - p2 for details, bottom of page Also used in denoting the real projective spaces, eg [ilmath]\mathbb{RP}^2[/ilmath] for the real projective plane ([ilmath]P\mathbb{R}^2[/ilmath] is also used) TODO: Find refs
[ilmath]\mathcal{P}(X)[/ilmath]	current	Power set, I have seen no other meaning for [ilmath]\mathcal{P}(X)[/ilmath] (where [ilmath]X[/ilmath] is a set) however I have seen the notation: [ilmath]2^X:=\mathcal{P}(X)[/ilmath] used to denote powerset