Proof of Theorem imadif
| Step | Hyp | Ref
| Expression |
| 1 | | ax-17 925 |
. . . . . . . . . . 11
   
   |
| 2 | | hbe1 709 |
. . . . . . . . . . 11
     
           |
| 3 | 1, 2 | hban 704 |
. . . . . . . . . 10
       
    
     
    |
| 4 | | mopick 1054 |
. . . . . . . . . . . . 13
                  |
| 5 | | funmo 2680 |
. . . . . . . . . . . . . 14
        |
| 6 | | visset 1350 |
. . . . . . . . . . . . . . . 16
 |
| 7 | | visset 1350 |
. . . . . . . . . . . . . . . 16
 |
| 8 | 6, 7 | brcnv 2519 |
. . . . . . . . . . . . . . 15
        |
| 9 | 8 | bimo 1031 |
. . . . . . . . . . . . . 14
          |
| 10 | 5, 9 | sylib 173 |
. . . . . . . . . . . . 13
       |
| 11 | 4, 10 | sylan 343 |
. . . . . . . . . . . 12
       
    
   |
| 12 | 11 | con2d 83 |
. . . . . . . . . . 11
       
        |
| 13 | | imnan 207 |
. . . . . . . . . . 11
           |
| 14 | 12, 13 | sylib 173 |
. . . . . . . . . 10
       
        |
| 15 | 3, 14 | 19.21ai 740 |
. . . . . . . . 9
       
         |
| 16 | 15 | exp 291 |
. . . . . . . 8
       
         |
| 17 | | exancom 736 |
. . . . . . . 8
     
         |
| 18 | | alnex 716 |
. . . . . . . 8
              |
| 19 | 16, 17, 18 | 3imtr3g 425 |
. . . . . . 7
                  |
| 20 | 19 | anim2d 433 |
. . . . . 6
                                  |
| 21 | | anandir 393 |
. . . . . . . 8
                   |
| 22 | 21 | biex 733 |
. . . . . . 7
    

          
      |
| 23 | | 19.40 773 |
. . . . . . 7
        
             
      |
| 24 | 22, 23 | sylbi 174 |
. . . . . 6
    

                   |
| 25 | 20, 24 | syl5 22 |
. . . . 5
      

                    |
| 26 | | 19.29r 753 |
. . . . . . . 8
                            |
| 27 | 26, 18 | sylan2br 348 |
. . . . . . 7
                             |
| 28 | | andi 456 |
. . . . . . . . 9
      
         
            |
| 29 | | ianor 253 |
. . . . . . . . . 10
           |
| 30 | 29 | anbi2i 367 |
. . . . . . . . 9
                
      |
| 31 | | an23 371 |
. . . . . . . . . 10
               |
| 32 | | pm3.24 496 |
. . . . . . . . . . . . 13
       |
| 33 | 32 | intnan 516 |
. . . . . . . . . . . 12
         |
| 34 | | anass 336 |
. . . . . . . . . . . 12
                   |
| 35 | 33, 34 | mtbir 167 |
. . . . . . . . . . 11
         |
| 36 | 35 | biorfi 552 |
. . . . . . . . . 10
     
                   |
| 37 | 31, 36 | bitr 151 |
. . . . . . . . 9
            
            |
| 38 | 28, 30, 37 | 3bitr4 158 |
. . . . . . . 8
            

     |
| 39 | 38 | biex 733 |
. . . . . . 7
                

     |
| 40 | 27, 39 | sylib 173 |
. . . . . 6
                  
      |
| 41 | 40 | a1i 7 |
. . . . 5
                    
       |
| 42 | 25, 41 | impbid 397 |
. . . 4
      

                    |
| 43 | | eldif 1496 |
. . . . . 6

  
   |
| 44 | 43 | anbi1i 368 |
. . . . 5
        
      |
| 45 | 44 | biex 733 |
. . . 4
            
      |
| 46 | 6 | elima2 2607 |
. . . . 5
             |
| 47 | 6 | elima2 2607 |
. . . . . 6
             |
| 48 | 47 | negbii 162 |
. . . . 5
             |
| 49 | 46, 48 | anbi12i 369 |
. . . 4
                           |
| 50 | 42, 45, 49 | 3bitr4g 428 |
. . 3
                        |
| 51 | 6 | elima2 2607 |
. . 3
           
     |
| 52 | | eldif 1496 |
. . 3
                       |
| 53 | 50, 51, 52 | 3bitr4g 428 |
. 2
                      |
| 54 | 53 | cleqrd 1100 |
1
                    |