Proof of Theorem omsmolem
| Step | Hyp | Ref
| Expression |
| 1 | | eleq2 1527 |
. . 3
     |
| 2 | | fveq2 3709 |
. . . 4
           |
| 3 | 2 | eleq2d 1533 |
. . 3
                     |
| 4 | 1, 3 | imbi12d 624 |
. 2
            
            |
| 5 | | eleq2 1527 |
. . 3
     |
| 6 | | fveq2 3709 |
. . . 4
           |
| 7 | 6 | eleq2d 1533 |
. . 3
                     |
| 8 | 5, 7 | imbi12d 624 |
. 2
                         |
| 9 | | eleq2 1527 |
. . 3
     |
| 10 | | fveq2 3709 |
. . . 4
           |
| 11 | 10 | eleq2d 1533 |
. . 3
                     |
| 12 | 9, 11 | imbi12d 624 |
. 2
                         |
| 13 | | noel 2274 |
. . . 4
 |
| 14 | 13 | pm2.21i 77 |
. . 3
           |
| 15 | 14 | a1i 8 |
. 2
  
     
                     |
| 16 | | fveq2 3709 |
. . . . . . . . . . . 12
           |
| 17 | | suceq 3024 |
. . . . . . . . . . . . 13

  |
| 18 | 17 | fveq2d 3713 |
. . . . . . . . . . . 12
           |
| 19 | 16, 18 | eleq12d 1534 |
. . . . . . . . . . 11
             
  
    |
| 20 | 19 | rcla4cva 1867 |
. . . . . . . . . 10
          
           |
| 21 | 20 | adantll 392 |
. . . . . . . . 9
   
         
  
             |
| 22 | | ssel 2053 |
. . . . . . . . . . . . . 14
             |
| 23 | | ffvelrn 3799 |
. . . . . . . . . . . . . . 15
             |
| 24 | | peano2b 3137 |
. . . . . . . . . . . . . . 15

  |
| 25 | 23, 24 | sylan2b 452 |
. . . . . . . . . . . . . 14
             |
| 26 | 22, 25 | syl5 21 |
. . . . . . . . . . . . 13
               |
| 27 | | ontr1 2993 |
. . . . . . . . . . . . . . 15
                                   |
| 28 | 27 | exp3a 375 |
. . . . . . . . . . . . . 14
             
                     |
| 29 | 28 | com23 32 |
. . . . . . . . . . . . 13
                                   |
| 30 | 26, 29 | syl6 22 |
. . . . . . . . . . . 12
            
  
                       |
| 31 | 30 | exp3a 375 |
. . . . . . . . . . 11
               
                       |
| 32 | 31 | imp31 362 |
. . . . . . . . . 10
  
          
  
                      |
| 33 | 32 | adantlr 393 |
. . . . . . . . 9
   
         
  
       
  
                      |
| 34 | 21, 33 | mpd 26 |
. . . . . . . 8
   
         
  
                       |
| 35 | 34 | imim2d 25 |
. . . . . . 7
   
         
  
                           |
| 36 | 35 | imp 350 |
. . . . . 6
                                            |
| 37 | | fveq2 3709 |
. . . . . . . . . 10
           |
| 38 | 37 | eleq1d 1532 |
. . . . . . . . 9
             
  
    |
| 39 | 38, 20 | syl5cbir 211 |
. . . . . . . 8
          
             |
| 40 | 39 | adantll 392 |
. . . . . . 7
   
         
  
               |
| 41 | 40 | adantr 389 |
. . . . . 6
                                            |
| 42 | 36, 41 | jaod 424 |
. . . . 5
                                              |
| 43 | | visset 1804 |
. . . . . 6
 |
| 44 | 43 | elsuc 3028 |
. . . . 5
     |
| 45 | 42, 44 | syl5ib 206 |
. . . 4
                                            |
| 46 | 45 | exp31 376 |
. . 3
  
     
                                   |
| 47 | 46 | com12 11 |
. 2

  
         
  
                           |
| 48 | 4, 8, 12, 15, 47 | finds2 3148 |
1
   
         
  
               |