| Step | Hyp | Ref
| Expression |
| 1 | | ssrab2 3687 |
. . . . . . . . . 10
   |
| 2 | | nnuz 11723 |
. . . . . . . . . 10
     |
| 3 | 1, 2 | sseqtri 3637 |
. . . . . . . . 9
       |
| 4 | | rabn0 3958 |
. . . . . . . . . 10
 
 
  |
| 5 | 4 | biimpri 218 |
. . . . . . . . 9
 
    |
| 6 | | infssuzcl 11772 |
. . . . . . . . 9
  
    
   inf 
 
     |
| 7 | 3, 5, 6 | sylancr 695 |
. . . . . . . 8
 
inf 
   
   |
| 8 | | nfrab1 3122 |
. . . . . . . . . 10
  
  |
| 9 | | nfcv 2764 |
. . . . . . . . . 10
   |
| 10 | | nfcv 2764 |
. . . . . . . . . 10
  |
| 11 | 8, 9, 10 | nfinf 8388 |
. . . . . . . . 9
 inf 
 
  |
| 12 | | nfcv 2764 |
. . . . . . . . 9
   |
| 13 | 11 | nfcsb1 3548 |
. . . . . . . . . 10
  inf      ![]_ ]_](_urbrack.gif)  |
| 14 | 13 | nfcri 2758 |
. . . . . . . . 9

inf 
    ![]_ ]_](_urbrack.gif)  |
| 15 | | csbeq1a 3542 |
. . . . . . . . . 10
 inf     inf      ![]_ ]_](_urbrack.gif)   |
| 16 | 15 | eleq2d 2687 |
. . . . . . . . 9
 inf     
inf      ![]_ ]_](_urbrack.gif)    |
| 17 | 11, 12, 14, 16 | elrabf 3360 |
. . . . . . . 8
inf 
 
  
inf 
 

inf 
    ![]_ ]_](_urbrack.gif)    |
| 18 | 7, 17 | sylib 208 |
. . . . . . 7
 
inf 
 

inf 
    ![]_ ]_](_urbrack.gif)    |
| 19 | 18 | simpld 475 |
. . . . . 6
 
inf 
     |
| 20 | 18 | simprd 479 |
. . . . . . 7
 
inf      ![]_ ]_](_urbrack.gif)   |
| 21 | 19 | nnred 11035 |
. . . . . . . . 9
 
inf 
     |
| 22 | 21 | ltnrd 10171 |
. . . . . . . 8
 
inf 
 

inf 
     |
| 23 | | eliun 4524 |
. . . . . . . . 9
   ..^inf 
    
  ..^inf 
       |
| 24 | 21 | ad2antrr 762 |
. . . . . . . . . . . 12
   
 ..^inf       
inf 
     |
| 25 | | elfzouz 12474 |
. . . . . . . . . . . . . . 15
  ..^inf 
 
        |
| 26 | 25, 2 | syl6eleqr 2712 |
. . . . . . . . . . . . . 14
  ..^inf 
 
    |
| 27 | 26 | ad2antlr 763 |
. . . . . . . . . . . . 13
   
 ..^inf       
  |
| 28 | 27 | nnred 11035 |
. . . . . . . . . . . 12
   
 ..^inf       
  |
| 29 | | simpr 477 |
. . . . . . . . . . . . . 14
   
 ..^inf       
  |
| 30 | | iundisj.1 |
. . . . . . . . . . . . . . . 16
   |
| 31 | 30 | eleq2d 2687 |
. . . . . . . . . . . . . . 15
 
   |
| 32 | 31 | elrab 3363 |
. . . . . . . . . . . . . 14
  
    |
| 33 | 27, 29, 32 | sylanbrc 698 |
. . . . . . . . . . . . 13
   
 ..^inf       

   |
| 34 | | infssuzle 11771 |
. . . . . . . . . . . . 13
  
    

 
inf 
     |
| 35 | 3, 33, 34 | sylancr 695 |
. . . . . . . . . . . 12
   
 ..^inf       
inf 
     |
| 36 | | elfzolt2 12479 |
. . . . . . . . . . . . 13
  ..^inf 
 
  inf       |
| 37 | 36 | ad2antlr 763 |
. . . . . . . . . . . 12
   
 ..^inf       
inf 
 
   |
| 38 | 24, 28, 24, 35, 37 | lelttrd 10195 |
. . . . . . . . . . 11
   
 ..^inf       
inf 
   inf       |
| 39 | 38 | ex 450 |
. . . . . . . . . 10
  
 ..^inf       
inf 
   inf        |
| 40 | 39 | rexlimdva 3031 |
. . . . . . . . 9
 
   ..^inf       inf 
   inf        |
| 41 | 23, 40 | syl5bi 232 |
. . . . . . . 8
 
   ..^inf 
     inf 
   inf        |
| 42 | 22, 41 | mtod 189 |
. . . . . . 7
 
  ..^inf         |
| 43 | 20, 42 | eldifd 3585 |
. . . . . 6
 
 inf      ![]_ ]_](_urbrack.gif)
  ..^inf 
        |
| 44 | | csbeq1 3536 |
. . . . . . . . 9
 inf       ![]_ ]_](_urbrack.gif) inf      ![]_ ]_](_urbrack.gif)   |
| 45 | | oveq2 6658 |
. . . . . . . . . 10
 inf      ..^  ..^inf 
      |
| 46 | 45 | iuneq1d 4545 |
. . . . . . . . 9
 inf       ..^    ..^inf 
       |
| 47 | 44, 46 | difeq12d 3729 |
. . . . . . . 8
 inf      
 ![]_ ]_](_urbrack.gif)
  ..^    inf      ![]_ ]_](_urbrack.gif)
  ..^inf 
        |
| 48 | 47 | eleq2d 2687 |
. . . . . . 7
 inf         ![]_ ]_](_urbrack.gif)   ..^  
 inf      ![]_ ]_](_urbrack.gif)
  ..^inf 
         |
| 49 | 48 | rspcev 3309 |
. . . . . 6
 inf      inf 
 
  ![]_ ]_](_urbrack.gif)   ..^inf 
       
   ![]_ ]_](_urbrack.gif)   ..^     |
| 50 | 19, 43, 49 | syl2anc 693 |
. . . . 5
 
    ![]_ ]_](_urbrack.gif)
  ..^     |
| 51 | | nfv 1843 |
. . . . . 6

   ..^    |
| 52 | | nfcsb1v 3549 |
. . . . . . . 8
  
 ![]_ ]_](_urbrack.gif)  |
| 53 | | nfcv 2764 |
. . . . . . . 8
  
 ..^   |
| 54 | 52, 53 | nfdif 3731 |
. . . . . . 7
     ![]_ ]_](_urbrack.gif)
  ..^    |
| 55 | 54 | nfcri 2758 |
. . . . . 6

   ![]_ ]_](_urbrack.gif)   ..^    |
| 56 | | csbeq1a 3542 |
. . . . . . . 8
   ![]_ ]_](_urbrack.gif)   |
| 57 | | oveq2 6658 |
. . . . . . . . 9
  ..^  ..^   |
| 58 | 57 | iuneq1d 4545 |
. . . . . . . 8
   ..^    ..^    |
| 59 | 56, 58 | difeq12d 3729 |
. . . . . . 7
    ..^      ![]_ ]_](_urbrack.gif)
  ..^     |
| 60 | 59 | eleq2d 2687 |
. . . . . 6
     ..^  
 
 ![]_ ]_](_urbrack.gif)
  ..^      |
| 61 | 51, 55, 60 | cbvrex 3168 |
. . . . 5
   
 ..^   
   ![]_ ]_](_urbrack.gif)   ..^     |
| 62 | 50, 61 | sylibr 224 |
. . . 4
 
    ..^     |
| 63 | | eldifi 3732 |
. . . . 5
  
 ..^  
  |
| 64 | 63 | reximi 3011 |
. . . 4
   
 ..^   
  |
| 65 | 62, 64 | impbii 199 |
. . 3
 

   ..^     |
| 66 | | eliun 4524 |
. . 3
 
   |
| 67 | | eliun 4524 |
. . 3
   
 ..^   
   ..^     |
| 68 | 65, 66, 67 | 3bitr4i 292 |
. 2
 
    ..^     |
| 69 | 68 | eqriv 2619 |
1
 
   ..^    |