| Step | Hyp | Ref
| Expression |
| 1 | | relxp 5227 |
. . . . . 6
     |
| 2 | 1 | rgenw 2924 |
. . . . 5

     |
| 3 | | reliun 5239 |
. . . . 5
 
   

      |
| 4 | 2, 3 | mpbir 221 |
. . . 4

     |
| 5 | 4 | a1i 11 |
. . 3
        |
| 6 | | dprd2d2.1 |
. . . . 5
 

 
SubGrp    |
| 7 | 6 | ralrimivva 2971 |
. . . 4
  
SubGrp    |
| 8 | | eqid 2622 |
. . . . 5
       |
| 9 | 8 | fmpt2x 7236 |
. . . 4
 

SubGrp       
      SubGrp    |
| 10 | 7, 9 | sylib 208 |
. . 3
  
   
      SubGrp    |
| 11 | | dmiun 5333 |
. . . 4

    
     |
| 12 | | dmxpss 5565 |
. . . . . . 7
       |
| 13 | | simpr 477 |
. . . . . . . 8
 
   |
| 14 | 13 | snssd 4340 |
. . . . . . 7
 
  
  |
| 15 | 12, 14 | syl5ss 3614 |
. . . . . 6
 
       |
| 16 | 15 | ralrimiva 2966 |
. . . . 5
        |
| 17 | | iunss 4561 |
. . . . 5
 
           |
| 18 | 16, 17 | sylibr 224 |
. . . 4
        |
| 19 | 11, 18 | syl5eqss 3649 |
. . 3
        |
| 20 | | dprd2d2.2 |
. . . . . . 7
 
  DProd     |
| 21 | | simprl 794 |
. . . . . . . . . 10
 

    |
| 22 | | simprr 796 |
. . . . . . . . . 10
 

    |
| 23 | 8 | ovmpt4g 6783 |
. . . . . . . . . 10
 
SubGrp            |
| 24 | 21, 22, 6, 23 | syl3anc 1326 |
. . . . . . . . 9
 

           |
| 25 | 24 | anassrs 680 |
. . . . . . . 8
              |
| 26 | 25 | mpteq2dva 4744 |
. . . . . . 7
 
              |
| 27 | 20, 26 | breqtrrd 4681 |
. . . . . 6
 
  DProd            |
| 28 | 27 | ralrimiva 2966 |
. . . . 5
   DProd            |
| 29 | | nfcv 2764 |
. . . . . . 7
   |
| 30 | | nfcv 2764 |
. . . . . . 7
  DProd |
| 31 | | nfcsb1v 3549 |
. . . . . . . 8
  
 ![]_ ]_](_urbrack.gif)  |
| 32 | | nfcv 2764 |
. . . . . . . . 9
   |
| 33 | | nfmpt21 6722 |
. . . . . . . . 9
   
  |
| 34 | | nfcv 2764 |
. . . . . . . . 9
   |
| 35 | 32, 33, 34 | nfov 6676 |
. . . . . . . 8
          |
| 36 | 31, 35 | nfmpt 4746 |
. . . . . . 7
     ![]_ ]_](_urbrack.gif)          |
| 37 | 29, 30, 36 | nfbr 4699 |
. . . . . 6
  DProd
   ![]_ ]_](_urbrack.gif)
   
     |
| 38 | | csbeq1a 3542 |
. . . . . . . 8
   ![]_ ]_](_urbrack.gif)   |
| 39 | | oveq1 6657 |
. . . . . . . 8
           
     |
| 40 | 38, 39 | mpteq12dv 4733 |
. . . . . . 7
             ![]_ ]_](_urbrack.gif)           |
| 41 | 40 | breq2d 4665 |
. . . . . 6
   DProd          
DProd    ![]_ ]_](_urbrack.gif)
   
       |
| 42 | 37, 41 | rspc 3303 |
. . . . 5
  
 DProd           DProd    ![]_ ]_](_urbrack.gif)    
       |
| 43 | 28, 42 | mpan9 486 |
. . . 4
 
  DProd    ![]_ ]_](_urbrack.gif)           |
| 44 | | nfcv 2764 |
. . . . . 6
          |
| 45 | | nfcv 2764 |
. . . . . . 7
   |
| 46 | | nfmpt22 6723 |
. . . . . . 7
   
  |
| 47 | | nfcv 2764 |
. . . . . . 7
   |
| 48 | 45, 46, 47 | nfov 6676 |
. . . . . 6
          |
| 49 | | oveq2 6658 |
. . . . . 6
           
     |
| 50 | 44, 48, 49 | cbvmpt 4749 |
. . . . 5
   ![]_ ]_](_urbrack.gif)    
       ![]_ ]_](_urbrack.gif)    
     |
| 51 | | nfv 1843 |
. . . . . . . . . . . . 13
  |
| 52 | 31 | nfcri 2758 |
. . . . . . . . . . . . 13
   ![]_ ]_](_urbrack.gif)  |
| 53 | 51, 52 | nfan 1828 |
. . . . . . . . . . . 12
     ![]_ ]_](_urbrack.gif)   |
| 54 | 38 | eleq2d 2687 |
. . . . . . . . . . . . 13
 
  ![]_ ]_](_urbrack.gif)    |
| 55 | 54 | anbi2d 740 |
. . . . . . . . . . . 12
       ![]_ ]_](_urbrack.gif)     |
| 56 | 53, 55 | equsexv 2109 |
. . . . . . . . . . 11
      

  ![]_ ]_](_urbrack.gif)    |
| 57 | | simprl 794 |
. . . . . . . . . . . . . . . 16
    
 
  |
| 58 | | simplr 792 |
. . . . . . . . . . . . . . . 16
    
 
  |
| 59 | 57, 58 | eqeltrd 2701 |
. . . . . . . . . . . . . . 15
    
 
  |
| 60 | 59 | biantrurd 529 |
. . . . . . . . . . . . . 14
    
 

     |
| 61 | 60 | pm5.32da 673 |
. . . . . . . . . . . . 13
 
     
 
 
     |
| 62 | | anass 681 |
. . . . . . . . . . . . 13
    


    |
| 63 | | eqcom 2629 |
. . . . . . . . . . . . . . 15
               |
| 64 | | vex 3203 |
. . . . . . . . . . . . . . . 16
 |
| 65 | | vex 3203 |
. . . . . . . . . . . . . . . 16
 |
| 66 | 64, 65 | opth 4945 |
. . . . . . . . . . . . . . 15
           |
| 67 | 63, 66 | bitr2i 265 |
. . . . . . . . . . . . . 14
 
         |
| 68 | 67 | anbi1i 731 |
. . . . . . . . . . . . 13
      
       
    |
| 69 | 61, 62, 68 | 3bitr3g 302 |
. . . . . . . . . . . 12
 
     
       
     |
| 70 | 69 | exbidv 1850 |
. . . . . . . . . . 11
 
       
     
  

     |
| 71 | 56, 70 | syl5bbr 274 |
. . . . . . . . . 10
 
     ![]_ ]_](_urbrack.gif)                 |
| 72 | 71 | exbidv 1850 |
. . . . . . . . 9
 
       ![]_ ]_](_urbrack.gif) 
           
     |
| 73 | | vex 3203 |
. . . . . . . . . 10
 |
| 74 | | eleq1 2689 |
. . . . . . . . . 10
    ![]_ ]_](_urbrack.gif)   ![]_ ]_](_urbrack.gif)    |
| 75 | 73, 74 | ceqsexv 3242 |
. . . . . . . . 9
      ![]_ ]_](_urbrack.gif) 
  ![]_ ]_](_urbrack.gif)   |
| 76 | | excom 2042 |
. . . . . . . . 9
              
           
    |
| 77 | 72, 75, 76 | 3bitr3g 302 |
. . . . . . . 8
 
    ![]_ ]_](_urbrack.gif)                  |
| 78 | | elrelimasn 5489 |
. . . . . . . . . 10
 
                          |
| 79 | 4, 78 | ax-mp 5 |
. . . . . . . . 9
  
        
 
       |
| 80 | | df-br 4654 |
. . . . . . . . 9
                  |
| 81 | | eliunxp 5259 |
. . . . . . . . 9
        
           
    |
| 82 | 79, 80, 81 | 3bitri 286 |
. . . . . . . 8
  
        
           
    |
| 83 | 77, 82 | syl6bbr 278 |
. . . . . . 7
 
    ![]_ ]_](_urbrack.gif)  
            |
| 84 | 83 | eqrdv 2620 |
. . . . . 6
 
   ![]_ ]_](_urbrack.gif)  
           |
| 85 | 84 | mpteq1d 4738 |
. . . . 5
 
    ![]_ ]_](_urbrack.gif)                               |
| 86 | 50, 85 | syl5eq 2668 |
. . . 4
 
    ![]_ ]_](_urbrack.gif)                               |
| 87 | 43, 86 | breqtrd 4679 |
. . 3
 
  DProd                       |
| 88 | | dprd2d2.3 |
. . . . 5
  DProd

 DProd       |
| 89 | 26 | oveq2d 6666 |
. . . . . 6
 
  DProd            DProd      |
| 90 | 89 | mpteq2dva 4744 |
. . . . 5
   DProd     
        DProd       |
| 91 | 88, 90 | breqtrrd 4681 |
. . . 4
  DProd

 DProd              |
| 92 | | nfcv 2764 |
. . . . . 6
   DProd

   
      |
| 93 | | nfcv 2764 |
. . . . . . 7
 DProd |
| 94 | 29, 93, 36 | nfov 6676 |
. . . . . 6
   DProd
   ![]_ ]_](_urbrack.gif)
   
      |
| 95 | 40 | oveq2d 6666 |
. . . . . 6
  DProd            DProd    ![]_ ]_](_urbrack.gif)            |
| 96 | 92, 94, 95 | cbvmpt 4749 |
. . . . 5
  DProd              DProd    ![]_ ]_](_urbrack.gif)            |
| 97 | 86 | oveq2d 6666 |
. . . . . 6
 
  DProd    ![]_ ]_](_urbrack.gif)           DProd   
                    |
| 98 | 97 | mpteq2dva 4744 |
. . . . 5
   DProd    ![]_ ]_](_urbrack.gif)    
        DProd   
            
        |
| 99 | 96, 98 | syl5eq 2668 |
. . . 4
   DProd     
        DProd   
            
        |
| 100 | 91, 99 | breqtrd 4679 |
. . 3
  DProd

 DProd                         |
| 101 | | eqid 2622 |
. . 3
mrCls SubGrp   mrCls SubGrp    |
| 102 | 5, 10, 19, 87, 100, 101 | dprd2da 18441 |
. 2
  DProd
     |
| 103 | 5, 10, 19, 87, 100, 101 | dprd2db 18442 |
. . 3
  DProd      DProd   DProd   
            
         |
| 104 | 99, 90 | eqtr3d 2658 |
. . . 4
   DProd   
            
        DProd       |
| 105 | 104 | oveq2d 6666 |
. . 3
  DProd   DProd                         DProd   DProd        |
| 106 | 103, 105 | eqtrd 2656 |
. 2
  DProd      DProd   DProd        |
| 107 | 102, 106 | jca 554 |
1
   DProd     DProd      DProd   DProd         |