Metamath Proof Explorer


Definition df-prob

Description: Define the class of probability measures as the set of measures with total measure 1. (Contributed by Thierry Arnoux, 14-Sep-2016)

Ref Expression
Assertion df-prob ⊢ Prob = p ∈ ⋃ ran ⁡ measures | p ⁡ ⋃ dom ⁡ p = 1

Detailed syntax breakdown

Step Hyp Ref Expression
0 cprb class Prob
1 vp setvar p
2 cmeas class measures
3 2 crn class ran ⁡ measures
4 3 cuni class ⋃ ran ⁡ measures
5 1 cv setvar p
6 5 cdm class dom ⁡ p
7 6 cuni class ⋃ dom ⁡ p
8 7 5 cfv class p ⁡ ⋃ dom ⁡ p
9 c1 class 1
10 8 9 wceq wff p ⁡ ⋃ dom ⁡ p = 1
11 10 1 4 crab class p ∈ ⋃ ran ⁡ measures | p ⁡ ⋃ dom ⁡ p = 1
12 0 11 wceq wff Prob = p ∈ ⋃ ran ⁡ measures | p ⁡ ⋃ dom ⁡ p = 1