| Step | Hyp | Ref
| Expression |
| 1 | | dprd2d.5 |
. . . . . 6
  DProd

 DProd                 |
| 2 | | dprdgrp 18404 |
. . . . . 6
  DProd   DProd              
  |
| 3 | 1, 2 | syl 17 |
. . . . 5
   |
| 4 | | eqid 2622 |
. . . . . 6
         |
| 5 | 4 | subgacs 17629 |
. . . . 5
 SubGrp  ACS        |
| 6 | | acsmre 16313 |
. . . . 5
 SubGrp  ACS      SubGrp  Moore        |
| 7 | 3, 5, 6 | 3syl 18 |
. . . 4
 SubGrp  Moore        |
| 8 | | dprd2d.k |
. . . 4
mrCls SubGrp    |
| 9 | | dprd2d.2 |
. . . . . 6
     SubGrp    |
| 10 | | ffun 6048 |
. . . . . 6
     SubGrp    |
| 11 | | funiunfv 6506 |
. . . . . 6

                 |
| 12 | 9, 10, 11 | 3syl 18 |
. . . . 5
  
               |
| 13 | | resss 5422 |
. . . . . . . . . 10
   |
| 14 | 13 | sseli 3599 |
. . . . . . . . 9
     |
| 15 | | dprd2d.1 |
. . . . . . . . . 10
   |
| 16 | | dprd2d.3 |
. . . . . . . . . 10
   |
| 17 | | dprd2d.4 |
. . . . . . . . . 10
 
  DProd               |
| 18 | 15, 9, 16, 17, 1, 8 | dprd2dlem2 18439 |
. . . . . . . . 9
 
      DProd                        |
| 19 | 14, 18 | sylan2 491 |
. . . . . . . 8
 

 
     DProd                        |
| 20 | | 1st2nd 7214 |
. . . . . . . . . . . . 13
                |
| 21 | 15, 14, 20 | syl2an 494 |
. . . . . . . . . . . 12
 

 
             |
| 22 | | simpr 477 |
. . . . . . . . . . . 12
 

 

   |
| 23 | 21, 22 | eqeltrrd 2702 |
. . . . . . . . . . 11
 

 
               |
| 24 | | fvex 6201 |
. . . . . . . . . . . . 13
     |
| 25 | 24 | opelres 5401 |
. . . . . . . . . . . 12
            
                    |
| 26 | 25 | simprbi 480 |
. . . . . . . . . . 11
            
       |
| 27 | 23, 26 | syl 17 |
. . . . . . . . . 10
 

 
      |
| 28 | | ovex 6678 |
. . . . . . . . . 10
 DProd                       |
| 29 | | eqid 2622 |
. . . . . . . . . . 11
  DProd                 DProd                |
| 30 | | sneq 4187 |
. . . . . . . . . . . . . 14
    
 
        |
| 31 | 30 | imaeq2d 5466 |
. . . . . . . . . . . . 13
    
                  |
| 32 | | oveq1 6657 |
. . . . . . . . . . . . 13
    
              |
| 33 | 31, 32 | mpteq12dv 4733 |
. . . . . . . . . . . 12
    
                                  |
| 34 | 33 | oveq2d 6666 |
. . . . . . . . . . 11
    
 DProd               DProd                        |
| 35 | 29, 34 | elrnmpt1s 5373 |
. . . . . . . . . 10
      
DProd                        DProd                        DProd                 |
| 36 | 27, 28, 35 | sylancl 694 |
. . . . . . . . 9
 

 
 DProd                        DProd                 |
| 37 | | elssuni 4467 |
. . . . . . . . 9
  DProd                        DProd                DProd                         DProd                 |
| 38 | 36, 37 | syl 17 |
. . . . . . . 8
 

 
 DProd                         DProd                 |
| 39 | 19, 38 | sstrd 3613 |
. . . . . . 7
 

 
       DProd                 |
| 40 | 39 | ralrimiva 2966 |
. . . . . 6
  
     
   DProd                 |
| 41 | | iunss 4561 |
. . . . . 6
 
          DProd                
     
   DProd                 |
| 42 | 40, 41 | sylibr 224 |
. . . . 5
  
     
   DProd                 |
| 43 | 12, 42 | eqsstr3d 3640 |
. . . 4
       
   DProd                 |
| 44 | | dprd2d.6 |
. . . . . . . . . . . 12

  |
| 45 | 44 | sselda 3603 |
. . . . . . . . . . 11
 
   |
| 46 | 45, 17 | syldan 487 |
. . . . . . . . . 10
 
  DProd               |
| 47 | | ovex 6678 |
. . . . . . . . . . . 12
     |
| 48 | | eqid 2622 |
. . . . . . . . . . . 12
                         |
| 49 | 47, 48 | dmmpti 6023 |
. . . . . . . . . . 11
                   |
| 50 | 49 | a1i 11 |
. . . . . . . . . 10
 
                     |
| 51 | | imassrn 5477 |
. . . . . . . . . . . . . 14
       |
| 52 | | frn 6053 |
. . . . . . . . . . . . . . . 16
     SubGrp  SubGrp    |
| 53 | 9, 52 | syl 17 |
. . . . . . . . . . . . . . 15
 SubGrp    |
| 54 | | mresspw 16252 |
. . . . . . . . . . . . . . . 16
 SubGrp  Moore      SubGrp         |
| 55 | 7, 54 | syl 17 |
. . . . . . . . . . . . . . 15
 SubGrp         |
| 56 | 53, 55 | sstrd 3613 |
. . . . . . . . . . . . . 14
        |
| 57 | 51, 56 | syl5ss 3614 |
. . . . . . . . . . . . 13
              |
| 58 | | sspwuni 4611 |
. . . . . . . . . . . . 13
                  
      |
| 59 | 57, 58 | sylib 208 |
. . . . . . . . . . . 12
       
      |
| 60 | 8 | mrccl 16271 |
. . . . . . . . . . . 12
  SubGrp  Moore                             SubGrp    |
| 61 | 7, 59, 60 | syl2anc 693 |
. . . . . . . . . . 11
            SubGrp    |
| 62 | 61 | adantr 481 |
. . . . . . . . . 10
 
            SubGrp    |
| 63 | | oveq2 6658 |
. . . . . . . . . . . . 13
           |
| 64 | 63, 48, 47 | fvmpt3i 6287 |
. . . . . . . . . . . 12
                             |
| 65 | 64 | adantl 482 |
. . . . . . . . . . 11
                                 |
| 66 | | df-ov 6653 |
. . . . . . . . . . . . . 14
            |
| 67 | | ffn 6045 |
. . . . . . . . . . . . . . . . 17
     SubGrp    |
| 68 | 9, 67 | syl 17 |
. . . . . . . . . . . . . . . 16
   |
| 69 | 68 | ad2antrr 762 |
. . . . . . . . . . . . . . 15
             |
| 70 | 13 | a1i 11 |
. . . . . . . . . . . . . . 15
               |
| 71 | | elrelimasn 5489 |
. . . . . . . . . . . . . . . . . . . 20

      
     |
| 72 | 15, 71 | syl 17 |
. . . . . . . . . . . . . . . . . . 19
       
     |
| 73 | 72 | adantr 481 |
. . . . . . . . . . . . . . . . . 18
 
             |
| 74 | 73 | biimpa 501 |
. . . . . . . . . . . . . . . . 17
               |
| 75 | | df-br 4654 |
. . . . . . . . . . . . . . . . 17
  
  
  |
| 76 | 74, 75 | sylib 208 |
. . . . . . . . . . . . . . . 16
                |
| 77 | | simplr 792 |
. . . . . . . . . . . . . . . 16
             |
| 78 | | vex 3203 |
. . . . . . . . . . . . . . . . 17
 |
| 79 | 78 | opelres 5401 |
. . . . . . . . . . . . . . . 16
             |
| 80 | 76, 77, 79 | sylanbrc 698 |
. . . . . . . . . . . . . . 15
                  |
| 81 | | fnfvima 6496 |
. . . . . . . . . . . . . . 15
  
    
 
      
        |
| 82 | 69, 70, 80, 81 | syl3anc 1326 |
. . . . . . . . . . . . . 14
                          |
| 83 | 66, 82 | syl5eqel 2705 |
. . . . . . . . . . . . 13
                       |
| 84 | | elssuni 4467 |
. . . . . . . . . . . . 13
          
             |
| 85 | 83, 84 | syl 17 |
. . . . . . . . . . . 12
                        |
| 86 | 7, 8, 59 | mrcssidd 16285 |
. . . . . . . . . . . . 13
       
             |
| 87 | 86 | ad2antrr 762 |
. . . . . . . . . . . 12
                 
             |
| 88 | 85, 87 | sstrd 3613 |
. . . . . . . . . . 11
                            |
| 89 | 65, 88 | eqsstrd 3639 |
. . . . . . . . . 10
                          
             |
| 90 | 46, 50, 62, 89 | dprdlub 18425 |
. . . . . . . . 9
 
  DProd             
             |
| 91 | | ovex 6678 |
. . . . . . . . . 10
 DProd               |
| 92 | 91 | elpw 4164 |
. . . . . . . . 9
  DProd                           DProd
                          |
| 93 | 90, 92 | sylibr 224 |
. . . . . . . 8
 
  DProd                            |
| 94 | 93, 29 | fmptd 6385 |
. . . . . . 7
   DProd                                 |
| 95 | | frn 6053 |
. . . . . . 7
   DProd                              

 DProd                             |
| 96 | 94, 95 | syl 17 |
. . . . . 6
   DProd              
              |
| 97 | | sspwuni 4611 |
. . . . . 6
   DProd                              DProd                            |
| 98 | 96, 97 | sylib 208 |
. . . . 5
    DProd                            |
| 99 | 7, 8 | mrcssvd 16283 |
. . . . 5
                  |
| 100 | 98, 99 | sstrd 3613 |
. . . 4
    DProd                     |
| 101 | 7, 8, 43, 100 | mrcssd 16284 |
. . 3
                  DProd                  |
| 102 | 8 | mrcsscl 16280 |
. . . 4
  SubGrp  Moore         DProd              
                      SubGrp         DProd                             |
| 103 | 7, 98, 61, 102 | syl3anc 1326 |
. . 3
       DProd               
             |
| 104 | 101, 103 | eqssd 3620 |
. 2
                  DProd                  |
| 105 | | eqid 2622 |
. . . . . . . 8
  DProd                 DProd                |
| 106 | 91, 105 | dmmpti 6023 |
. . . . . . 7
  DProd                |
| 107 | 106 | a1i 11 |
. . . . . 6
   DProd                 |
| 108 | 1, 107, 44 | dprdres 18427 |
. . . . 5
   DProd    DProd                 DProd    DProd              
 
 DProd   DProd                   |
| 109 | 108 | simpld 475 |
. . . 4
  DProd
   DProd                  |
| 110 | 44 | resmptd 5452 |
. . . 4
    DProd              
   DProd                 |
| 111 | 109, 110 | breqtrd 4679 |
. . 3
  DProd

 DProd                 |
| 112 | 8 | dprdspan 18426 |
. . 3
  DProd   DProd              
 DProd   DProd                      DProd                  |
| 113 | 111, 112 | syl 17 |
. 2
  DProd   DProd                      DProd                  |
| 114 | 104, 113 | eqtr4d 2659 |
1
             DProd   DProd                  |