| Step | Hyp | Ref
| Expression |
| 1 | | eqid 2622 |
. . 3
 
         
         |
| 2 | | id 22 |
. . 3

  |
| 3 | | 0ex 4790 |
. . . 4
 |
| 4 | 3 | a1i 11 |
. . 3

  |
| 5 | | f0 6086 |
. . . 4
     |
| 6 | 5 | a1i 11 |
. . 3

      |
| 7 | | f00 6087 |
. . . . 5
                                     |
| 8 | | vex 3203 |
. . . . . . . . . 10
 |
| 9 | | simpl 473 |
. . . . . . . . . 10
         |
| 10 | 1 | hashbcval 15706 |
. . . . . . . . . 10
 
    
           
       |
| 11 | 8, 9, 10 | sylancr 695 |
. . . . . . . . 9
                              |
| 12 | | hashfz1 13134 |
. . . . . . . . . . . . . . . 16

          |
| 13 | 12 | breq1d 4663 |
. . . . . . . . . . . . . . 15

            
       |
| 14 | 13 | biimpar 502 |
. . . . . . . . . . . . . 14
                     |
| 15 | | fzfid 12772 |
. . . . . . . . . . . . . . 15
             |
| 16 | | hashdom 13168 |
. . . . . . . . . . . . . . 15
     
                     |
| 17 | 15, 8, 16 | sylancl 694 |
. . . . . . . . . . . . . 14
                           |
| 18 | 14, 17 | mpbid 222 |
. . . . . . . . . . . . 13
             |
| 19 | 8 | domen 7968 |
. . . . . . . . . . . . 13
               |
| 20 | 18, 19 | sylib 208 |
. . . . . . . . . . . 12
             
   |
| 21 | | simprr 796 |
. . . . . . . . . . . . . . . 16
  
         
    |
| 22 | | selpw 4165 |
. . . . . . . . . . . . . . . 16
 
  |
| 23 | 21, 22 | sylibr 224 |
. . . . . . . . . . . . . . 15
  
         
     |
| 24 | | hasheni 13136 |
. . . . . . . . . . . . . . . . 17
                   |
| 25 | 24 | ad2antrl 764 |
. . . . . . . . . . . . . . . 16
  
         
                |
| 26 | 12 | ad2antrr 762 |
. . . . . . . . . . . . . . . 16
  
         
            |
| 27 | 25, 26 | eqtr3d 2658 |
. . . . . . . . . . . . . . 15
  
         
        |
| 28 | 23, 27 | jca 554 |
. . . . . . . . . . . . . 14
  
         
           |
| 29 | 28 | ex 450 |
. . . . . . . . . . . . 13
            
           |
| 30 | 29 | eximdv 1846 |
. . . . . . . . . . . 12
               
            |
| 31 | 20, 30 | mpd 15 |
. . . . . . . . . . 11
                  |
| 32 | | df-rex 2918 |
. . . . . . . . . . 11
      
           |
| 33 | 31, 32 | sylibr 224 |
. . . . . . . . . 10
               |
| 34 | | rabn0 3958 |
. . . . . . . . . 10
                |
| 35 | 33, 34 | sylibr 224 |
. . . . . . . . 9
                |
| 36 | 11, 35 | eqnetrd 2861 |
. . . . . . . 8
                       |
| 37 | 36 | neneqd 2799 |
. . . . . . 7
          
            |
| 38 | 37 | pm2.21d 118 |
. . . . . 6
           
                 
   
   
 
                   |
| 39 | 38 | adantld 483 |
. . . . 5
            
          
           
   
 
                   |
| 40 | 7, 39 | syl5bi 232 |
. . . 4
             
 
                 
   
   
 
                   |
| 41 | 40 | impr 649 |
. . 3
  
                                   
   
 
                  |
| 42 | 1, 2, 4, 6, 2, 41 | ramub 15717 |
. 2

 Ramsey 
  |
| 43 | | nnnn0 11299 |
. . . . . 6
   |
| 44 | 3 | a1i 11 |
. . . . . 6
   |
| 45 | 5 | a1i 11 |
. . . . . 6
       |
| 46 | | nnm1nn0 11334 |
. . . . . 6
 
   |
| 47 | | f0 6086 |
. . . . . . 7
     |
| 48 | | fzfid 12772 |
. . . . . . . . . . 11
         |
| 49 | 1 | hashbc2 15710 |
. . . . . . . . . . 11
     
 
             
 
                
      |
| 50 | 48, 43, 49 | syl2anc 693 |
. . . . . . . . . 10
                                
      |
| 51 | | hashfz1 13134 |
. . . . . . . . . . . 12
  
      
       |
| 52 | 46, 51 | syl 17 |
. . . . . . . . . . 11
               |
| 53 | 52 | oveq1d 6665 |
. . . . . . . . . 10
                   |
| 54 | | nnz 11399 |
. . . . . . . . . . 11
   |
| 55 | | nnre 11027 |
. . . . . . . . . . . . 13
   |
| 56 | 55 | ltm1d 10956 |
. . . . . . . . . . . 12
 
   |
| 57 | 56 | olcd 408 |
. . . . . . . . . . 11
  
    |
| 58 | | bcval4 13094 |
. . . . . . . . . . 11
   
 
         |
| 59 | 46, 54, 57, 58 | syl3anc 1326 |
. . . . . . . . . 10
       |
| 60 | 50, 53, 59 | 3eqtrd 2660 |
. . . . . . . . 9
                           |
| 61 | | ovex 6678 |
. . . . . . . . . 10
         
 
         |
| 62 | | hasheq0 13154 |
. . . . . . . . . 10
     
                       
                                       |
| 63 | 61, 62 | ax-mp 5 |
. . . . . . . . 9
                        
                      |
| 64 | 60, 63 | sylib 208 |
. . . . . . . 8
     
                 |
| 65 | 64 | feq2d 6031 |
. . . . . . 7
                                 |
| 66 | 47, 65 | mpbiri 248 |
. . . . . 6
       
                   |
| 67 | | noel 3919 |
. . . . . . . 8
 |
| 68 | 67 | pm2.21i 116 |
. . . . . . 7

                                 |
| 69 | 68 | ad2antrl 764 |
. . . . . 6
  
       
                                 |
| 70 | 1, 43, 44, 45, 46, 66, 69 | ramlb 15723 |
. . . . 5
 
  Ramsey    |
| 71 | | ramubcl 15722 |
. . . . . . . 8
        
 Ramsey     Ramsey    |
| 72 | 2, 4, 6, 2, 42, 71 | syl32anc 1334 |
. . . . . . 7

 Ramsey    |
| 73 | 43, 72 | syl 17 |
. . . . . 6
  Ramsey    |
| 74 | | nn0lem1lt 11442 |
. . . . . 6
  
Ramsey     Ramsey 
   Ramsey
    |
| 75 | 43, 73, 74 | syl2anc 693 |
. . . . 5
   Ramsey 
   Ramsey
    |
| 76 | 70, 75 | mpbird 247 |
. . . 4
  Ramsey    |
| 77 | 76 | a1i 11 |
. . 3

  Ramsey     |
| 78 | 72 | nn0ge0d 11354 |
. . . 4

 Ramsey
   |
| 79 | | breq1 4656 |
. . . 4
   Ramsey 
 Ramsey     |
| 80 | 78, 79 | syl5ibrcom 237 |
. . 3

  Ramsey     |
| 81 | | elnn0 11294 |
. . . 4

    |
| 82 | 81 | biimpi 206 |
. . 3

    |
| 83 | 77, 80, 82 | mpjaod 396 |
. 2

 Ramsey
   |
| 84 | 72 | nn0red 11352 |
. . 3

 Ramsey    |
| 85 | | nn0re 11301 |
. . 3

  |
| 86 | 84, 85 | letri3d 10179 |
. 2

  Ramsey    Ramsey   Ramsey      |
| 87 | 42, 83, 86 | mpbir2and 957 |
1

 Ramsey    |