Proof of Theorem tgval3
| Step | Hyp | Ref
| Expression |
| 1 | | visset 2295 |
. . . . . . 7
 |
| 2 | | abssexg 3490 |
. . . . . . 7

 
    |
| 3 | 1, 2 | ax-mp 7 |
. . . . . 6
 
   |
| 4 | | hbab1 1874 |
. . . . . . 7
  
    
    |
| 5 | | ax-17 1317 |
. . . . . . . . 9
    |
| 6 | 4, 5 | hbss 2614 |
. . . . . . . 8
  
     
    |
| 7 | | ax-17 1317 |
. . . . . . . . 9
    |
| 8 | 4 | hbuni 3183 |
. . . . . . . . 9
   
     
    |
| 9 | 7, 8 | hbeq 1995 |
. . . . . . . 8
   
     
    |
| 10 | 6, 9 | hban 1356 |
. . . . . . 7
     
  
       
 
  
     |
| 11 | | sseq1 2637 |
. . . . . . . 8
  
    
     |
| 12 | | unieq 3185 |
. . . . . . . . 9
  
     
    |
| 13 | 12 | eqeq2d 1895 |
. . . . . . . 8
  
      
     |
| 14 | 11, 13 | anbi12d 690 |
. . . . . . 7
  
   
    
           |
| 15 | 4, 10, 14 | cla4egf 2362 |
. . . . . 6
  
 
   
 
  
     
     |
| 16 | 3, 15 | ax-mp 7 |
. . . . 5
     
  
     
    |
| 17 | | simpr 350 |
. . . . . 6
     |
| 18 | 17 | abssi 2682 |
. . . . 5
 
   |
| 19 | | eltg2 8889 |
. . . . . . . . . 10

Bases  topGen   


      |
| 20 | 19 | simplbda 465 |
. . . . . . . . 9
  Bases
topGen   


   |
| 21 | | elequ1 1496 |
. . . . . . . . . . . . 13
     |
| 22 | 21 | anbi1d 679 |
. . . . . . . . . . . 12
         |
| 23 | 22 | rexbidv 2124 |
. . . . . . . . . . 11
           |
| 24 | 23 | rcla4cv 2377 |
. . . . . . . . . 10
    
 
     |
| 25 | | df-rex 2110 |
. . . . . . . . . . 11
            |
| 26 | | an12 542 |
. . . . . . . . . . . . 13
           |
| 27 | | ancom 482 |
. . . . . . . . . . . . . 14
       |
| 28 | 27 | anbi2i 538 |
. . . . . . . . . . . . 13
           |
| 29 | 26, 28 | bitri 190 |
. . . . . . . . . . . 12
           |
| 30 | 29 | exbii 1398 |
. . . . . . . . . . 11
               |
| 31 | 25, 30 | bitri 190 |
. . . . . . . . . 10
       
    |
| 32 | 24, 31 | syl6ib 229 |
. . . . . . . . 9
    
    
     |
| 33 | 20, 32 | syl 12 |
. . . . . . . 8
  Bases
topGen       
     |
| 34 | | ssel 2615 |
. . . . . . . . . . 11
     |
| 35 | 34 | impcom 378 |
. . . . . . . . . 10
  
  |
| 36 | 35 | adantrr 431 |
. . . . . . . . 9
  
    |
| 37 | 36 | 19.23aiv 1674 |
. . . . . . . 8
    
    |
| 38 | 33, 37 | impbid1 575 |
. . . . . . 7
  Bases
topGen       
     |
| 39 | | eluniab 3189 |
. . . . . . 7
   
     
    |
| 40 | 38, 39 | syl6bbr 597 |
. . . . . 6
  Bases
topGen            |
| 41 | 40 | eqrdv 1882 |
. . . . 5
  Bases
topGen          |
| 42 | 16, 18, 41 | sylancr 526 |
. . . 4
  Bases
topGen     
    |
| 43 | 42 | ex 402 |
. . 3

Bases  topGen 
  
     |
| 44 | | simprr 451 |
. . . . . 6
  Bases 
      |
| 45 | | tgcl 8894 |
. . . . . . . . 9

Bases topGen  Top |
| 46 | 45 | adantr 425 |
. . . . . . . 8
  Bases  topGen  Top |
| 47 | | sstr 2625 |
. . . . . . . . . 10
 
topGen   topGen    |
| 48 | | bastg 8892 |
. . . . . . . . . 10

Bases topGen    |
| 49 | 47, 48 | sylan2 500 |
. . . . . . . . 9
 
Bases
topGen    |
| 50 | 49 | ancoms 484 |
. . . . . . . 8
  Bases  topGen    |
| 51 | | uniopn 8867 |
. . . . . . . 8
  topGen  Top
topGen    topGen    |
| 52 | 46, 50, 51 | syl11anc 524 |
. . . . . . 7
  Bases   topGen    |
| 53 | 52 | adantrr 431 |
. . . . . 6
  Bases 
    topGen    |
| 54 | 44, 53 | eqeltrd 1971 |
. . . . 5
  Bases 
   topGen    |
| 55 | 54 | ex 402 |
. . . 4

Bases     topGen     |
| 56 | 55 | 19.23adv 1584 |
. . 3

Bases    
  topGen     |
| 57 | 43, 56 | impbid 574 |
. 2

Bases  topGen    
     |
| 58 | 57 | abbi2dv 2009 |
1

Bases topGen  
  
     |