| Step | Hyp | Ref
| Expression |
| 1 | | simp2 1062 |
. 2
     
[ ] 
     |
| 2 | | simp1 1061 |
. . . 4
     
[ ] 
  
  |
| 3 | | snfi 8038 |
. . . . 5
   |
| 4 | | finnum 8774 |
. . . . 5
  
    |
| 5 | 3, 4 | ax-mp 5 |
. . . 4
   |
| 6 | | unnum 9022 |
. . . 4
    
      |
| 7 | 2, 5, 6 | sylancl 694 |
. . 3
     
[ ] 
         |
| 8 | | uncom 3757 |
. . . . . . . . 9
         |
| 9 | 8 | sseq2i 3630 |
. . . . . . . 8
    
      |
| 10 | | ssundif 4052 |
. . . . . . . 8
    
      |
| 11 | 9, 10 | bitri 264 |
. . . . . . 7
    
      |
| 12 | | difss 3737 |
. . . . . . . . 9
     |
| 13 | | soss 5053 |
. . . . . . . . 9
    
[ ] [ ] 
      |
| 14 | 12, 13 | ax-mp 5 |
. . . . . . . 8
[ ]
[ ] 
     |
| 15 | | ssdif0 3942 |
. . . . . . . . . . 11
  
      |
| 16 | | uni0b 4463 |
. . . . . . . . . . . . 13
 
    |
| 17 | 16 | biimpri 218 |
. . . . . . . . . . . 12
      |
| 18 | 17 | eleq1d 2686 |
. . . . . . . . . . 11
                |
| 19 | 15, 18 | sylbir 225 |
. . . . . . . . . 10
      

          |
| 20 | 19 | imbi2d 330 |
. . . . . . . . 9
          
[ ] 
       
    
[ ] 
          |
| 21 | | vex 3203 |
. . . . . . . . . . . . . . 15
 |
| 22 | | difexg 4808 |
. . . . . . . . . . . . . . 15
 
     |
| 23 | 21, 22 | ax-mp 5 |
. . . . . . . . . . . . . 14
     |
| 24 | | sseq1 3626 |
. . . . . . . . . . . . . . . 16
         
   |
| 25 | | neeq1 2856 |
. . . . . . . . . . . . . . . 16
     
       |
| 26 | | soeq2 5055 |
. . . . . . . . . . . . . . . 16
     [ ]
[ ] 
      |
| 27 | 24, 25, 26 | 3anbi123d 1399 |
. . . . . . . . . . . . . . 15
       [ ]       
  
[ ] 
       |
| 28 | | unieq 4444 |
. . . . . . . . . . . . . . . 16
     
 
     |
| 29 | 28 | eleq1d 2686 |
. . . . . . . . . . . . . . 15
               |
| 30 | 27, 29 | imbi12d 334 |
. . . . . . . . . . . . . 14
       
[ ] 
 
          [ ] 
   
 
       |
| 31 | 23, 30 | spcv 3299 |
. . . . . . . . . . . . 13
    
[ ] 
            [ ]

   
 
      |
| 32 | 31 | com12 32 |
. . . . . . . . . . . 12
          [ ] 
   
    
[ ] 
   
      |
| 33 | 32 | 3expa 1265 |
. . . . . . . . . . 11
           
[ ] 
   
    
[ ] 
   
      |
| 34 | 33 | an32s 846 |
. . . . . . . . . 10
       [ ]

             
[ ] 
   
      |
| 35 | | unidif0 4838 |
. . . . . . . . . . . 12
 
     |
| 36 | 35 | eleq1i 2692 |
. . . . . . . . . . 11
  
  
   |
| 37 | | elun1 3780 |
. . . . . . . . . . 11
 
       |
| 38 | 36, 37 | sylbi 207 |
. . . . . . . . . 10
  
   

     |
| 39 | 34, 38 | syl6 35 |
. . . . . . . . 9
       [ ]

             
[ ] 
          |
| 40 | | 0ex 4790 |
. . . . . . . . . . . 12
 |
| 41 | 40 | snid 4208 |
. . . . . . . . . . 11
   |
| 42 | | elun2 3781 |
. . . . . . . . . . 11
         |
| 43 | 41, 42 | ax-mp 5 |
. . . . . . . . . 10
     |
| 44 | 43 | 2a1i 12 |
. . . . . . . . 9
      [ ]     
    
[ ] 
         |
| 45 | 20, 39, 44 | pm2.61ne 2879 |
. . . . . . . 8
      [ ]     
    
[ ] 
          |
| 46 | 14, 45 | sylan2 491 |
. . . . . . 7
      [ ]       [ ] 
          |
| 47 | 11, 46 | sylanb 489 |
. . . . . 6
 
    [ ]      
[ ] 
          |
| 48 | 47 | com12 32 |
. . . . 5
    
[ ] 
    
   [ ]

        |
| 49 | 48 | alrimiv 1855 |
. . . 4
    
[ ] 
      
   [ ] 
        |
| 50 | 49 | 3ad2ant3 1084 |
. . 3
     
[ ] 
           [ ] 
        |
| 51 | | zorng 9326 |
. . 3
         
    [ ]  

                  |
| 52 | 7, 50, 51 | syl2anc 693 |
. 2
     
[ ] 
   

           |
| 53 | | ssun1 3776 |
. . . . 5

    |
| 54 | | ssralv 3666 |
. . . . 5
      

   
   |
| 55 | 53, 54 | ax-mp 5 |
. . . 4
 
   
   |
| 56 | 55 | reximi 3011 |
. . 3
                     |
| 57 | | rexun 3793 |
. . . 4
       
 


   
   |
| 58 | | simpr 477 |
. . . . 5
  

 

  |
| 59 | | simpr 477 |
. . . . . 6
  
   
 
   
  |
| 60 | | psseq1 3694 |
. . . . . . . . . . . . 13


   |
| 61 | | 0pss 4013 |
. . . . . . . . . . . . 13
   |
| 62 | 60, 61 | syl6bb 276 |
. . . . . . . . . . . 12


   |
| 63 | 62 | notbid 308 |
. . . . . . . . . . 11


   |
| 64 | | nne 2798 |
. . . . . . . . . . 11

  |
| 65 | 63, 64 | syl6bb 276 |
. . . . . . . . . 10


   |
| 66 | 65 | ralbidv 2986 |
. . . . . . . . 9

 

   |
| 67 | 40, 66 | rexsn 4223 |
. . . . . . . 8
     

  |
| 68 | | eqsn 4361 |
. . . . . . . . 9

  

   |
| 69 | 68 | biimpar 502 |
. . . . . . . 8
  
     |
| 70 | 67, 69 | sylan2b 492 |
. . . . . . 7
  
   

    |
| 71 | 70 | rexeqdv 3145 |
. . . . . 6
  
   
            |
| 72 | 59, 71 | mpbird 247 |
. . . . 5
  
   
 

  |
| 73 | 58, 72 | jaodan 826 |
. . . 4
   

       

  |
| 74 | 57, 73 | sylan2b 492 |
. . 3
  
     
 

  |
| 75 | 56, 74 | sylan2 491 |
. 2
  
     
   
  
  |
| 76 | 1, 52, 75 | syl2anc 693 |
1
     
[ ] 
   

  |