Theorem rrvmbfm 30504

Description: A real-valued random variable is a measurable function from its sample space to the Borel sigma-algebra. (Contributed by Thierry Arnoux, 25-Jan-2017.)

Hypothesis

Ref	Expression
isrrvv.1	|- ( ph -> P e. Prob )

Assertion

Ref	Expression
rrvmbfm	|- ( ph -> ( X e. (rRndVar ` P ) <-> X e. ( dom PMblFnM𝔅ℝ ) ) )

Proof of Theorem rrvmbfm

Dummy variable p is distinct from all other variables.

Step	Hyp	Ref	Expression
1		isrrvv.1	. . 3 |- ( ph -> P e. Prob )
2		dmeq 5324	. . . . 5 |- ( p = P -> dom p = dom P )
3	2	oveq1d 6665	. . . 4 |- ( p = P -> ( dom pMblFnM𝔅ℝ ) = ( dom PMblFnM𝔅ℝ ) )
4		df-rrv 30503	. . . 4 |- rRndVar = ( p e. Prob |-> ( dom pMblFnM𝔅ℝ ) )
5		ovex 6678	. . . 4 |- ( dom PMblFnM𝔅ℝ ) e. _V
6	3, 4, 5	fvmpt 6282	. . 3 |- ( P e. Prob -> (rRndVar ` P ) = ( dom PMblFnM𝔅ℝ ) )
7	1, 6	syl 17	. 2 |- ( ph -> (rRndVar ` P ) = ( dom PMblFnM𝔅ℝ ) )
8	7	eleq2d 2687	1 |- ( ph -> ( X e. (rRndVar ` P ) <-> X e. ( dom PMblFnM𝔅ℝ ) ) )

Syntax hints:   -> wi 4   <-> wb 196   = wceq 1483   e. wcel 1990   dom cdm 5114   ` cfv 5888  (class class class)co 6650  𝔅_ℝcbrsiga 30244  MblFnMcmbfm 30312  Probcprb 30469  rRndVarcrrv 30502

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-iota 5851  df-fun 5890  df-fv 5896  df-ov 6653  df-rrv 30503

This theorem is referenced by:  isrrvv  30505  rrvadd  30514  rrvmulc  30515  orrvcval4  30526  orrvcoel  30527  orrvccel  30528