| Step | Hyp | Ref
| Expression |
| 1 | | pgpfac1.g |
. . 3
   |
| 2 | | ablgrp 18198 |
. . 3

  |
| 3 | | pgpfac1.b |
. . . 4
     |
| 4 | 3 | subgid 17596 |
. . 3
 SubGrp    |
| 5 | 1, 2, 4 | 3syl 18 |
. 2
 SubGrp    |
| 6 | | pgpfac1.ab |
. 2
   |
| 7 | | pgpfac1.n |
. . 3
   |
| 8 | | eleq1 2689 |
. . . . . . 7
  SubGrp 
SubGrp     |
| 9 | | eleq2 2690 |
. . . . . . 7
 
   |
| 10 | 8, 9 | anbi12d 747 |
. . . . . 6
   SubGrp  
 SubGrp 
    |
| 11 | | eqeq2 2633 |
. . . . . . . 8
   
     |
| 12 | 11 | anbi2d 740 |
. . . . . . 7
       
   
     |
| 13 | 12 | rexbidv 3052 |
. . . . . 6
  
SubGrp        
 SubGrp            |
| 14 | 10, 13 | imbi12d 334 |
. . . . 5
    SubGrp 

 SubGrp         
  SubGrp    SubGrp             |
| 15 | 14 | imbi2d 330 |
. . . 4
  
  SubGrp    SubGrp           
  SubGrp    SubGrp              |
| 16 | | eleq1 2689 |
. . . . . . 7
  SubGrp 
SubGrp     |
| 17 | | eleq2 2690 |
. . . . . . 7
 
   |
| 18 | 16, 17 | anbi12d 747 |
. . . . . 6
   SubGrp  
 SubGrp 
    |
| 19 | | eqeq2 2633 |
. . . . . . . 8
   
     |
| 20 | 19 | anbi2d 740 |
. . . . . . 7
       
   
     |
| 21 | 20 | rexbidv 3052 |
. . . . . 6
  
SubGrp        
 SubGrp            |
| 22 | 18, 21 | imbi12d 334 |
. . . . 5
    SubGrp 

 SubGrp         
 
SubGrp 
  SubGrp             |
| 23 | 22 | imbi2d 330 |
. . . 4
  
  SubGrp    SubGrp           
  SubGrp    SubGrp              |
| 24 | | bi2.04 376 |
. . . . . . . . . . 11
 
 SubGrp  
 SubGrp           
 SubGrp     SubGrp              |
| 25 | | impexp 462 |
. . . . . . . . . . . 12
   SubGrp    SubGrp         
 SubGrp    SubGrp             |
| 26 | 25 | imbi2i 326 |
. . . . . . . . . . 11
 
  SubGrp    SubGrp             SubGrp  
 SubGrp              |
| 27 | | impexp 462 |
. . . . . . . . . . . 12
  

 SubGrp         


 SubGrp             |
| 28 | 27 | imbi2i 326 |
. . . . . . . . . . 11
  SubGrp   

 SubGrp            SubGrp  
 
SubGrp              |
| 29 | 24, 26, 28 | 3bitr4i 292 |
. . . . . . . . . 10
 
  SubGrp    SubGrp            SubGrp   

 SubGrp             |
| 30 | 29 | imbi2i 326 |
. . . . . . . . 9
     SubGrp 
  SubGrp              SubGrp   

 SubGrp              |
| 31 | | bi2.04 376 |
. . . . . . . . 9
 
   SubGrp 
  SubGrp             
  SubGrp    SubGrp              |
| 32 | | bi2.04 376 |
. . . . . . . . 9
  SubGrp       SubGrp              SubGrp   

 SubGrp              |
| 33 | 30, 31, 32 | 3bitr4i 292 |
. . . . . . . 8
 
   SubGrp 
  SubGrp             SubGrp    

 SubGrp              |
| 34 | 33 | albii 1747 |
. . . . . . 7
       SubGrp    SubGrp               SubGrp 
   
 SubGrp              |
| 35 | | df-ral 2917 |
. . . . . . 7
 
SubGrp     

 SubGrp              SubGrp    

 SubGrp              |
| 36 | | r19.21v 2960 |
. . . . . . 7
 
SubGrp     

 SubGrp           
 SubGrp     
 SubGrp             |
| 37 | 34, 35, 36 | 3bitr2i 288 |
. . . . . 6
       SubGrp    SubGrp              SubGrp    
  SubGrp             |
| 38 | | psseq1 3694 |
. . . . . . . . . . 11
 
   |
| 39 | | eleq2 2690 |
. . . . . . . . . . 11
 
   |
| 40 | 38, 39 | anbi12d 747 |
. . . . . . . . . 10
  
      |
| 41 | | ineq2 3808 |
. . . . . . . . . . . . . 14
       |
| 42 | 41 | eqeq1d 2624 |
. . . . . . . . . . . . 13
         |
| 43 | | oveq2 6658 |
. . . . . . . . . . . . . 14
       |
| 44 | 43 | eqeq1d 2624 |
. . . . . . . . . . . . 13
   
     |
| 45 | 42, 44 | anbi12d 747 |
. . . . . . . . . . . 12
       
   
     |
| 46 | 45 | cbvrexv 3172 |
. . . . . . . . . . 11
  SubGrp        
 SubGrp           |
| 47 | | eqeq2 2633 |
. . . . . . . . . . . . 13
   
     |
| 48 | 47 | anbi2d 740 |
. . . . . . . . . . . 12
       
   
     |
| 49 | 48 | rexbidv 3052 |
. . . . . . . . . . 11
  
SubGrp        
 SubGrp            |
| 50 | 46, 49 | syl5bb 272 |
. . . . . . . . . 10
  
SubGrp        
 SubGrp            |
| 51 | 40, 50 | imbi12d 334 |
. . . . . . . . 9
    
 SubGrp         
 
  SubGrp             |
| 52 | 51 | cbvralv 3171 |
. . . . . . . 8
 
SubGrp       SubGrp         
 SubGrp     
 SubGrp            |
| 53 | | pgpfac1.k |
. . . . . . . . . 10
mrCls SubGrp    |
| 54 | | pgpfac1.s |
. . . . . . . . . 10
       |
| 55 | | pgpfac1.o |
. . . . . . . . . 10
     |
| 56 | | pgpfac1.e |
. . . . . . . . . 10
gEx   |
| 57 | | pgpfac1.z |
. . . . . . . . . 10
     |
| 58 | | pgpfac1.l |
. . . . . . . . . 10
     |
| 59 | | pgpfac1.p |
. . . . . . . . . . 11
 pGrp   |
| 60 | 59 | adantr 481 |
. . . . . . . . . 10
 
 
SubGrp       SubGrp          
SubGrp     pGrp
  |
| 61 | 1 | adantr 481 |
. . . . . . . . . 10
 
 
SubGrp       SubGrp          
SubGrp       |
| 62 | 7 | adantr 481 |
. . . . . . . . . 10
 
 
SubGrp       SubGrp          
SubGrp       |
| 63 | | pgpfac1.oe |
. . . . . . . . . . 11
       |
| 64 | 63 | adantr 481 |
. . . . . . . . . 10
 
 
SubGrp       SubGrp          
SubGrp           |
| 65 | | simprrl 804 |
. . . . . . . . . 10
 
 
SubGrp       SubGrp          
SubGrp     SubGrp    |
| 66 | | simprrr 805 |
. . . . . . . . . 10
 
 
SubGrp       SubGrp          
SubGrp       |
| 67 | | simprl 794 |
. . . . . . . . . . 11
 
 
SubGrp       SubGrp          
SubGrp      SubGrp    
  SubGrp            |
| 68 | 67, 52 | sylib 208 |
. . . . . . . . . 10
 
 
SubGrp       SubGrp          
SubGrp      SubGrp    
  SubGrp            |
| 69 | 53, 54, 3, 55, 56, 57, 58, 60, 61, 62, 64, 65, 66, 68 | pgpfac1lem5 18478 |
. . . . . . . . 9
 
 
SubGrp       SubGrp          
SubGrp      SubGrp           |
| 70 | 69 | exp32 631 |
. . . . . . . 8
   SubGrp     
 SubGrp            SubGrp 

 SubGrp             |
| 71 | 52, 70 | syl5bir 233 |
. . . . . . 7
   SubGrp     
 SubGrp            SubGrp 

 SubGrp             |
| 72 | 71 | a2i 14 |
. . . . . 6
   SubGrp    
  SubGrp          
   SubGrp 

 SubGrp             |
| 73 | 37, 72 | sylbi 207 |
. . . . 5
       SubGrp    SubGrp           
   SubGrp 

 SubGrp             |
| 74 | 73 | a1i 11 |
. . . 4
        SubGrp    SubGrp           
   SubGrp 

 SubGrp              |
| 75 | 15, 23, 74 | findcard3 8203 |
. . 3
    SubGrp 
  SubGrp             |
| 76 | 7, 75 | mpcom 38 |
. 2
   SubGrp 

 SubGrp            |
| 77 | 5, 6, 76 | mp2and 715 |
1
  SubGrp           |