| Step | Hyp | Ref
| Expression |
| 1 | | wrd0 13330 |
. . 3
Word  |
| 2 | | pgpfac.g |
. . . . . 6
   |
| 3 | | ablgrp 18198 |
. . . . . 6

  |
| 4 | | eqid 2622 |
. . . . . . 7
         |
| 5 | 4 | dprd0 18430 |
. . . . . 6
   DProd  DProd           |
| 6 | 2, 3, 5 | 3syl 18 |
. . . . 5
   DProd  DProd           |
| 7 | 6 | adantr 481 |
. . . 4
 
gEx  ↾s      DProd  DProd           |
| 8 | | pgpfac.u |
. . . . . . . . 9
 SubGrp    |
| 9 | 4 | subg0cl 17602 |
. . . . . . . . 9
 SubGrp 
      |
| 10 | 8, 9 | syl 17 |
. . . . . . . 8
       |
| 11 | 10 | adantr 481 |
. . . . . . 7
 
gEx  ↾s          |
| 12 | | eqid 2622 |
. . . . . . . . . . 11
 ↾s   ↾s   |
| 13 | 12 | subgbas 17598 |
. . . . . . . . . 10
 SubGrp 
    ↾s     |
| 14 | 8, 13 | syl 17 |
. . . . . . . . 9
    
↾s     |
| 15 | 14 | adantr 481 |
. . . . . . . 8
 
gEx  ↾s        ↾s     |
| 16 | 12 | subggrp 17597 |
. . . . . . . . . . 11
 SubGrp 
 ↾s    |
| 17 | 8, 16 | syl 17 |
. . . . . . . . . 10
 
↾s    |
| 18 | | grpmnd 17429 |
. . . . . . . . . 10
  ↾s  
↾s    |
| 19 | | eqid 2622 |
. . . . . . . . . . 11
   
↾s       ↾s    |
| 20 | | eqid 2622 |
. . . . . . . . . . 11
gEx 
↾s   gEx  ↾s    |
| 21 | 19, 20 | gex1 18006 |
. . . . . . . . . 10
  ↾s   gEx  ↾s       ↾s      |
| 22 | 17, 18, 21 | 3syl 18 |
. . . . . . . . 9
  gEx  ↾s       ↾s      |
| 23 | 22 | biimpa 501 |
. . . . . . . 8
 
gEx  ↾s        ↾s     |
| 24 | 15, 23 | eqbrtrd 4675 |
. . . . . . 7
 
gEx  ↾s      |
| 25 | | en1eqsn 8190 |
. . . . . . 7
      
        |
| 26 | 11, 24, 25 | syl2anc 693 |
. . . . . 6
 
gEx  ↾s            |
| 27 | 26 | eqeq2d 2632 |
. . . . 5
 
gEx  ↾s      DProd
  DProd           |
| 28 | 27 | anbi2d 740 |
. . . 4
 
gEx  ↾s       DProd  DProd     DProd  DProd            |
| 29 | 7, 28 | mpbird 247 |
. . 3
 
gEx  ↾s      DProd  DProd     |
| 30 | | breq2 4657 |
. . . . 5

  DProd
 DProd    |
| 31 | | oveq2 6658 |
. . . . . 6

 DProd   DProd    |
| 32 | 31 | eqeq1d 2624 |
. . . . 5

  DProd   DProd     |
| 33 | 30, 32 | anbi12d 747 |
. . . 4

   DProd

DProd  
  DProd  DProd      |
| 34 | 33 | rspcev 3309 |
. . 3
 
Word   DProd  DProd   
 Word    DProd  DProd     |
| 35 | 1, 29, 34 | sylancr 695 |
. 2
 
gEx  ↾s     Word    DProd  DProd     |
| 36 | 12 | subgabl 18241 |
. . . . . 6
  SubGrp  
 ↾s    |
| 37 | 2, 8, 36 | syl2anc 693 |
. . . . 5
 
↾s    |
| 38 | | pgpfac.f |
. . . . . . . 8
   |
| 39 | | pgpfac.b |
. . . . . . . . . 10
     |
| 40 | 39 | subgss 17595 |
. . . . . . . . 9
 SubGrp 
  |
| 41 | 8, 40 | syl 17 |
. . . . . . . 8

  |
| 42 | | ssfi 8180 |
. . . . . . . 8
  
  |
| 43 | 38, 41, 42 | syl2anc 693 |
. . . . . . 7
   |
| 44 | 14, 43 | eqeltrrd 2702 |
. . . . . 6
     ↾s     |
| 45 | 19, 20 | gexcl2 18004 |
. . . . . 6
  
↾s      ↾s    gEx 
↾s     |
| 46 | 17, 44, 45 | syl2anc 693 |
. . . . 5
 gEx  ↾s     |
| 47 | | eqid 2622 |
. . . . . 6
    ↾s       ↾s    |
| 48 | 19, 20, 47 | gexex 18256 |
. . . . 5
  
↾s  gEx  ↾s         ↾s         ↾s      gEx 
↾s     |
| 49 | 37, 46, 48 | syl2anc 693 |
. . . 4
      ↾s         ↾s      gEx 
↾s     |
| 50 | 49 | adantr 481 |
. . 3
 
gEx  ↾s         ↾s         ↾s      gEx  ↾s     |
| 51 | | eqid 2622 |
. . . . 5
mrCls SubGrp  ↾s    mrCls SubGrp  ↾s     |
| 52 | | eqid 2622 |
. . . . 5
 mrCls SubGrp  ↾s          mrCls SubGrp  ↾s          |
| 53 | | eqid 2622 |
. . . . 5
    ↾s       ↾s    |
| 54 | | eqid 2622 |
. . . . 5
   
↾s       ↾s    |
| 55 | | pgpfac.p |
. . . . . . 7
 pGrp   |
| 56 | | subgpgp 18012 |
. . . . . . 7
  pGrp SubGrp  
pGrp  ↾s    |
| 57 | 55, 8, 56 | syl2anc 693 |
. . . . . 6
 pGrp  ↾s    |
| 58 | 57 | ad2antrr 762 |
. . . . 5
   gEx 
↾s        
↾s       
↾s      gEx  ↾s     pGrp 
↾s    |
| 59 | 37 | ad2antrr 762 |
. . . . 5
   gEx 
↾s        
↾s       
↾s      gEx  ↾s     
↾s    |
| 60 | 44 | ad2antrr 762 |
. . . . 5
   gEx 
↾s        
↾s       
↾s      gEx  ↾s         ↾s     |
| 61 | | simprr 796 |
. . . . 5
   gEx 
↾s        
↾s       
↾s      gEx  ↾s         
↾s      gEx  ↾s     |
| 62 | | simprl 794 |
. . . . 5
   gEx 
↾s        
↾s       
↾s      gEx  ↾s    
   
↾s     |
| 63 | 51, 52, 19, 47, 20, 53, 54, 58, 59, 60, 61, 62 | pgpfac1 18479 |
. . . 4
   gEx 
↾s        
↾s       
↾s      gEx  ↾s     
SubGrp 
↾s       mrCls SubGrp  ↾s               ↾s      mrCls SubGrp  ↾s              ↾s         ↾s      |
| 64 | | pgpfac.c |
. . . . 5
 SubGrp   ↾s  CycGrp pGrp   |
| 65 | 2 | ad3antrrr 766 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s        |
| 66 | 55 | ad3antrrr 766 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s      pGrp   |
| 67 | 38 | ad3antrrr 766 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s        |
| 68 | 8 | ad3antrrr 766 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s      SubGrp    |
| 69 | | pgpfac.a |
. . . . . 6
  SubGrp     Word    DProd  DProd      |
| 70 | 69 | ad3antrrr 766 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s       SubGrp     Word    DProd 
DProd      |
| 71 | | simpllr 799 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s      gEx 
↾s     |
| 72 | | simplrl 800 |
. . . . . 6
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s          ↾s     |
| 73 | 68, 13 | syl 17 |
. . . . . 6
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s          ↾s     |
| 74 | 72, 73 | eleqtrrd 2704 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s        |
| 75 | | simplrr 801 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s           ↾s      gEx  ↾s     |
| 76 | | simprl 794 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s      SubGrp  ↾s     |
| 77 | | simprrl 804 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s        mrCls SubGrp 
↾s        
     
↾s      |
| 78 | | simprrr 805 |
. . . . . 6
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s        mrCls SubGrp 
↾s              ↾s        
↾s     |
| 79 | 78, 73 | eqtr4d 2659 |
. . . . 5
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s        mrCls SubGrp 
↾s              ↾s       |
| 80 | 39, 64, 65, 66, 67, 68, 70, 12, 51, 47, 20, 53, 54, 71, 74, 75, 76, 77, 79 | pgpfaclem2 18481 |
. . . 4
    gEx  ↾s         ↾s       
↾s      gEx  ↾s     
SubGrp 
↾s      mrCls SubGrp  ↾s              
↾s      mrCls SubGrp  ↾s              ↾s         ↾s       Word    DProd  DProd     |
| 81 | 63, 80 | rexlimddv 3035 |
. . 3
   gEx 
↾s        
↾s       
↾s      gEx  ↾s     
Word    DProd

DProd     |
| 82 | 50, 81 | rexlimddv 3035 |
. 2
 
gEx  ↾s     Word    DProd  DProd     |
| 83 | 35, 82 | pm2.61dane 2881 |
1
  Word    DProd 
DProd     |