| Step | Hyp | Ref
| Expression |
| 1 | | dstrvprob.3 |
. . . . . 6
  𝔅ℝ     ∘RV/𝑐      |
| 2 | | dstrvprob.1 |
. . . . . . . . 9
 Prob |
| 3 | 2 | adantr 481 |
. . . . . . . 8
 
𝔅ℝ
Prob |
| 4 | | dstrvprob.2 |
. . . . . . . . . 10
 rRndVar    |
| 5 | 4 | adantr 481 |
. . . . . . . . 9
 
𝔅ℝ
rRndVar    |
| 6 | | simpr 477 |
. . . . . . . . 9
 
𝔅ℝ
𝔅ℝ |
| 7 | 3, 5, 6 | orvcelel 30531 |
. . . . . . . 8
 
𝔅ℝ  ∘RV/𝑐    |
| 8 | | prob01 30475 |
. . . . . . . 8
  Prob  ∘RV/𝑐  
    ∘RV/𝑐     ![[,] [,]](_icc.gif)    |
| 9 | 3, 7, 8 | syl2anc 693 |
. . . . . . 7
 
𝔅ℝ     ∘RV/𝑐     ![[,] [,]](_icc.gif)    |
| 10 | | elunitrn 29943 |
. . . . . . . . 9
     ∘RV/𝑐     ![[,] [,]](_icc.gif) 
    ∘RV/𝑐     |
| 11 | 10 | rexrd 10089 |
. . . . . . . 8
     ∘RV/𝑐     ![[,] [,]](_icc.gif) 
    ∘RV/𝑐     |
| 12 | | elunitge0 29945 |
. . . . . . . 8
     ∘RV/𝑐     ![[,] [,]](_icc.gif) 
    ∘RV/𝑐     |
| 13 | | elxrge0 12281 |
. . . . . . . 8
     ∘RV/𝑐           ∘RV/𝑐  
    ∘RV/𝑐      |
| 14 | 11, 12, 13 | sylanbrc 698 |
. . . . . . 7
     ∘RV/𝑐     ![[,] [,]](_icc.gif) 
    ∘RV/𝑐        |
| 15 | 9, 14 | syl 17 |
. . . . . 6
 
𝔅ℝ     ∘RV/𝑐        |
| 16 | 1, 15 | fmpt3d 6386 |
. . . . 5
  𝔅ℝ      |
| 17 | | simpr 477 |
. . . . . . . . 9
 

  |
| 18 | 17 | oveq2d 6666 |
. . . . . . . 8
 

 ∘RV/𝑐   ∘RV/𝑐    |
| 19 | 18 | fveq2d 6195 |
. . . . . . 7
 

    ∘RV/𝑐       ∘RV/𝑐     |
| 20 | | brsigarn 30247 |
. . . . . . . . 9
𝔅ℝ sigAlgebra   |
| 21 | | elrnsiga 30189 |
. . . . . . . . 9
𝔅ℝ
sigAlgebra 
𝔅ℝ  sigAlgebra |
| 22 | | 0elsiga 30177 |
. . . . . . . . 9
𝔅ℝ
 sigAlgebra 𝔅ℝ |
| 23 | 20, 21, 22 | mp2b 10 |
. . . . . . . 8
𝔅ℝ |
| 24 | 23 | a1i 11 |
. . . . . . 7

𝔅ℝ |
| 25 | 2, 4, 24 | orvcelel 30531 |
. . . . . . . 8
  ∘RV/𝑐    |
| 26 | 2, 25 | probvalrnd 30486 |
. . . . . . 7
     ∘RV/𝑐     |
| 27 | 1, 19, 24, 26 | fvmptd 6288 |
. . . . . 6
         ∘RV/𝑐     |
| 28 | 2, 4, 24 | orvcelval 30530 |
. . . . . . 7
  ∘RV/𝑐         |
| 29 | 28 | fveq2d 6195 |
. . . . . 6
     ∘RV/𝑐              |
| 30 | | ima0 5481 |
. . . . . . . 8
      |
| 31 | 30 | fveq2i 6194 |
. . . . . . 7
              |
| 32 | | probnul 30476 |
. . . . . . . 8
 Prob       |
| 33 | 2, 32 | syl 17 |
. . . . . . 7
       |
| 34 | 31, 33 | syl5eq 2668 |
. . . . . 6
            |
| 35 | 27, 29, 34 | 3eqtrd 2660 |
. . . . 5
       |
| 36 | 2, 4 | rrvvf 30506 |
. . . . . . . . . . . 12
        |
| 37 | 36 | ad2antrr 762 |
. . . . . . . . . . 11
   𝔅ℝ
 Disj
         |
| 38 | | ffun 6048 |
. . . . . . . . . . 11
     
  |
| 39 | 37, 38 | syl 17 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
    |
| 40 | | unipreima 29446 |
. . . . . . . . . . 11

              |
| 41 | 40 | fveq2d 6195 |
. . . . . . . . . 10

             
        |
| 42 | 39, 41 | syl 17 |
. . . . . . . . 9
   𝔅ℝ
 Disj
               
        |
| 43 | 2 | ad2antrr 762 |
. . . . . . . . . . 11
   𝔅ℝ
 Disj
 
Prob |
| 44 | | domprobmeas 30472 |
. . . . . . . . . . 11
 Prob measures    |
| 45 | 43, 44 | syl 17 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
 
measures    |
| 46 | | nfv 1843 |
. . . . . . . . . . . 12
   𝔅ℝ |
| 47 | | nfv 1843 |
. . . . . . . . . . . . 13
  |
| 48 | | nfdisj1 4633 |
. . . . . . . . . . . . 13
 Disj
 |
| 49 | 47, 48 | nfan 1828 |
. . . . . . . . . . . 12
   Disj   |
| 50 | 46, 49 | nfan 1828 |
. . . . . . . . . . 11
   
𝔅ℝ
 Disj
   |
| 51 | | simplll 798 |
. . . . . . . . . . . . 13
   
𝔅ℝ
 Disj
 
   |
| 52 | | simpr 477 |
. . . . . . . . . . . . . 14
   
𝔅ℝ
 Disj
 
   |
| 53 | | simpllr 799 |
. . . . . . . . . . . . . 14
   
𝔅ℝ
 Disj
 
 𝔅ℝ |
| 54 | | elelpwi 4171 |
. . . . . . . . . . . . . 14
 
𝔅ℝ
𝔅ℝ |
| 55 | 52, 53, 54 | syl2anc 693 |
. . . . . . . . . . . . 13
   
𝔅ℝ
 Disj
 

𝔅ℝ |
| 56 | 2, 4 | rrvfinvima 30512 |
. . . . . . . . . . . . . 14
 
𝔅ℝ        |
| 57 | 56 | r19.21bi 2932 |
. . . . . . . . . . . . 13
 
𝔅ℝ        |
| 58 | 51, 55, 57 | syl2anc 693 |
. . . . . . . . . . . 12
   
𝔅ℝ
 Disj
 
        |
| 59 | 58 | ex 450 |
. . . . . . . . . . 11
   𝔅ℝ
 Disj
           |
| 60 | 50, 59 | ralrimi 2957 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
  
       |
| 61 | | simprl 794 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
    |
| 62 | | simprr 796 |
. . . . . . . . . . 11
   𝔅ℝ
 Disj
  Disj   |
| 63 | | disjpreima 29397 |
. . . . . . . . . . 11
  Disj  Disj        |
| 64 | 39, 62, 63 | syl2anc 693 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
  Disj        |
| 65 | | measvuni 30277 |
. . . . . . . . . 10
  measures  
    

Disj                 
Σ*             |
| 66 | 45, 60, 61, 64, 65 | syl112anc 1330 |
. . . . . . . . 9
   𝔅ℝ
 Disj
     
      Σ*             |
| 67 | 42, 66 | eqtrd 2656 |
. . . . . . . 8
   𝔅ℝ
 Disj
            Σ*             |
| 68 | 4 | ad2antrr 762 |
. . . . . . . . 9
   𝔅ℝ
 Disj
 
rRndVar    |
| 69 | 1 | ad2antrr 762 |
. . . . . . . . 9
   𝔅ℝ
 Disj
 
 𝔅ℝ     ∘RV/𝑐      |
| 70 | 20, 21 | mp1i 13 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
  𝔅ℝ  sigAlgebra |
| 71 | | simplr 792 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
 
𝔅ℝ |
| 72 | | sigaclcu 30180 |
. . . . . . . . . 10
 𝔅ℝ  sigAlgebra 𝔅ℝ 
 𝔅ℝ |
| 73 | 70, 71, 61, 72 | syl3anc 1326 |
. . . . . . . . 9
   𝔅ℝ
 Disj
  
𝔅ℝ |
| 74 | 43, 68, 69, 73 | dstrvval 30532 |
. . . . . . . 8
   𝔅ℝ
 Disj
                   |
| 75 | 1, 9 | fvmpt2d 6293 |
. . . . . . . . . . . . 13
 
𝔅ℝ         ∘RV/𝑐     |
| 76 | 51, 55, 75 | syl2anc 693 |
. . . . . . . . . . . 12
   
𝔅ℝ
 Disj
 
         ∘RV/𝑐     |
| 77 | 43 | adantr 481 |
. . . . . . . . . . . . . 14
   
𝔅ℝ
 Disj
 
 Prob |
| 78 | 68 | adantr 481 |
. . . . . . . . . . . . . 14
   
𝔅ℝ
 Disj
 
 rRndVar    |
| 79 | 77, 78, 55 | orvcelval 30530 |
. . . . . . . . . . . . 13
   
𝔅ℝ
 Disj
 
  ∘RV/𝑐         |
| 80 | 79 | fveq2d 6195 |
. . . . . . . . . . . 12
   
𝔅ℝ
 Disj
 
     ∘RV/𝑐              |
| 81 | 76, 80 | eqtrd 2656 |
. . . . . . . . . . 11
   
𝔅ℝ
 Disj
 
                |
| 82 | 81 | ex 450 |
. . . . . . . . . 10
   𝔅ℝ
 Disj
                   |
| 83 | 50, 82 | ralrimi 2957 |
. . . . . . . . 9
   𝔅ℝ
 Disj
  
               |
| 84 | 50, 83 | esumeq2d 30099 |
. . . . . . . 8
   𝔅ℝ
 Disj
  Σ*      Σ*             |
| 85 | 67, 74, 84 | 3eqtr4d 2666 |
. . . . . . 7
   𝔅ℝ
 Disj
       Σ*        |
| 86 | 85 | ex 450 |
. . . . . 6
 
𝔅ℝ  
Disj       Σ*         |
| 87 | 86 | ralrimiva 2966 |
. . . . 5
  𝔅ℝ 
Disj       Σ*         |
| 88 | | ismeas 30262 |
. . . . . 6
𝔅ℝ
 sigAlgebra  measures 𝔅ℝ   𝔅ℝ         𝔅ℝ  Disj 
     Σ*           |
| 89 | 20, 21, 88 | mp2b 10 |
. . . . 5
 measures 𝔅ℝ   𝔅ℝ         𝔅ℝ  Disj 
     Σ*          |
| 90 | 16, 35, 87, 89 | syl3anbrc 1246 |
. . . 4
 measures 𝔅ℝ  |
| 91 | 1 | dmeqd 5326 |
. . . . . 6
 
𝔅ℝ     ∘RV/𝑐      |
| 92 | 15 | ralrimiva 2966 |
. . . . . . 7
 
𝔅ℝ     ∘RV/𝑐        |
| 93 | | dmmptg 5632 |
. . . . . . 7
 
𝔅ℝ     ∘RV/𝑐     
 𝔅ℝ     ∘RV/𝑐    𝔅ℝ |
| 94 | 92, 93 | syl 17 |
. . . . . 6
  𝔅ℝ     ∘RV/𝑐    𝔅ℝ |
| 95 | 91, 94 | eqtrd 2656 |
. . . . 5

𝔅ℝ |
| 96 | 95 | fveq2d 6195 |
. . . 4
 measures  measures 𝔅ℝ  |
| 97 | 90, 96 | eleqtrrd 2704 |
. . 3
 measures    |
| 98 | | measbasedom 30265 |
. . 3
  measures
measures    |
| 99 | 97, 98 | sylibr 224 |
. 2
  measures |
| 100 | 95 | unieqd 4446 |
. . . . 5
  𝔅ℝ |
| 101 | | unibrsiga 30249 |
. . . . 5
𝔅ℝ  |
| 102 | 100, 101 | syl6eq 2672 |
. . . 4
    |
| 103 | 102 | fveq2d 6195 |
. . 3
            |
| 104 | | simpr 477 |
. . . . . . . 8
 

  |
| 105 | 104 | oveq2d 6666 |
. . . . . . 7
 

 ∘RV/𝑐   ∘RV/𝑐    |
| 106 | | baselsiga 30178 |
. . . . . . . . . 10
𝔅ℝ
sigAlgebra  𝔅ℝ |
| 107 | 20, 106 | mp1i 13 |
. . . . . . . . 9

𝔅ℝ |
| 108 | 2, 4, 107 | orvcelval 30530 |
. . . . . . . 8
  ∘RV/𝑐         |
| 109 | 108 | adantr 481 |
. . . . . . 7
 

 ∘RV/𝑐 
       |
| 110 | 105, 109 | eqtrd 2656 |
. . . . . 6
 

 ∘RV/𝑐         |
| 111 | 110 | fveq2d 6195 |
. . . . 5
 

    ∘RV/𝑐              |
| 112 | | fimacnv 6347 |
. . . . . . . . 9
              |
| 113 | 36, 112 | syl 17 |
. . . . . . . 8
     
   |
| 114 | 113 | fveq2d 6195 |
. . . . . . 7
                 |
| 115 | | probtot 30474 |
. . . . . . . 8
 Prob        |
| 116 | 2, 115 | syl 17 |
. . . . . . 7
        |
| 117 | 114, 116 | eqtrd 2656 |
. . . . . 6
            |
| 118 | 117 | adantr 481 |
. . . . 5
 

           |
| 119 | 111, 118 | eqtrd 2656 |
. . . 4
 

    ∘RV/𝑐     |
| 120 | | 1red 10055 |
. . . 4
   |
| 121 | 1, 119, 107, 120 | fvmptd 6288 |
. . 3
    
  |
| 122 | 103, 121 | eqtrd 2656 |
. 2
        |
| 123 | | elprob 30471 |
. 2
 Prob   measures         |
| 124 | 99, 122, 123 | sylanbrc 698 |
1
 Prob |