| Step | Hyp | Ref
| Expression |
| 1 | | df-rtrcl 13727 |
. 2

      
 
    |
| 2 | | ancom 466 |
. . . . . . 7
  
        
     |
| 3 | 2 | anbi2i 730 |
. . . . . 6
 
 
     
           |
| 4 | 3 | abbii 2739 |
. . . . 5
                
      |
| 5 | 4 | inteqi 4479 |
. . . 4
                  
      |
| 6 | 5 | mpteq2i 4741 |
. . 3
                 
  

       |
| 7 | | vex 3203 |
. . . . . 6
 |
| 8 | 7 | rtrclexi 37928 |
. . . . 5
      
      |
| 9 | 8 | a1i 11 |
. . . 4
       
       |
| 10 | | dmexg 7097 |
. . . . . . . . 9

  |
| 11 | | rnexg 7098 |
. . . . . . . . 9

  |
| 12 | | unexg 6959 |
. . . . . . . . 9
       |
| 13 | 10, 11, 12 | syl2anc 693 |
. . . . . . . 8
     |
| 14 | | resiexg 7102 |
. . . . . . . 8
        |
| 15 | 7, 13, 14 | mp2b 10 |
. . . . . . 7
    |
| 16 | 7, 15 | unex 6956 |
. . . . . 6
      |
| 17 | 16 | trclexi 37927 |
. . . . 5
             |
| 18 | 17 | a1i 11 |
. . . 4
               |
| 19 | | simpr 477 |
. . . . . 6
      
 
  
  |
| 20 | 19 | cotrintab 37921 |
. . . . 5
        
 
 
                    
 
   |
| 21 | 20 | a1i 11 |
. . . 4
         
 
 
                    
 
    |
| 22 | 7 | dmex 7099 |
. . . . . . . . . . . . 13
 |
| 23 | 7 | rnex 7100 |
. . . . . . . . . . . . 13
 |
| 24 | 12 | resiexd 6480 |
. . . . . . . . . . . . 13
        |
| 25 | 22, 23, 24 | mp2an 708 |
. . . . . . . . . . . 12
    |
| 26 | 7, 25 | unex 6956 |
. . . . . . . . . . 11
      |
| 27 | | dmtrcl 37934 |
. . . . . . . . . . 11
             
 
 
       |
| 28 | 26, 27 | ax-mp 5 |
. . . . . . . . . 10
       
 
 
      |
| 29 | | dmun 5331 |
. . . . . . . . . . 11
           |
| 30 | | dmresi 5457 |
. . . . . . . . . . . 12
      |
| 31 | 30 | uneq2i 3764 |
. . . . . . . . . . 11
          |
| 32 | | ssun1 3776 |
. . . . . . . . . . . 12
   |
| 33 | | ssequn1 3783 |
. . . . . . . . . . . 12


 
       |
| 34 | 32, 33 | mpbi 220 |
. . . . . . . . . . 11
       |
| 35 | 29, 31, 34 | 3eqtri 2648 |
. . . . . . . . . 10
        |
| 36 | 28, 35 | eqtri 2644 |
. . . . . . . . 9
       
 
 

  |
| 37 | | rntrcl 37935 |
. . . . . . . . . . 11
             
 
 
       |
| 38 | 26, 37 | ax-mp 5 |
. . . . . . . . . 10
       
 
 
      |
| 39 | | rnun 5541 |
. . . . . . . . . . 11
           |
| 40 | | rnresi 5479 |
. . . . . . . . . . . 12
      |
| 41 | 40 | uneq2i 3764 |
. . . . . . . . . . 11
          |
| 42 | | ssun2 3777 |
. . . . . . . . . . . 12
   |
| 43 | | ssequn1 3783 |
. . . . . . . . . . . 12


 
       |
| 44 | 42, 43 | mpbi 220 |
. . . . . . . . . . 11
       |
| 45 | 39, 41, 44 | 3eqtri 2648 |
. . . . . . . . . 10
        |
| 46 | 38, 45 | eqtri 2644 |
. . . . . . . . 9
       
 
 

  |
| 47 | 36, 46 | uneq12i 3765 |
. . . . . . . 8
        
 
 
                    |
| 48 | | unidm 3756 |
. . . . . . . 8
         |
| 49 | 47, 48 | eqtri 2644 |
. . . . . . 7
        
 
 
                |
| 50 | 49 | reseq2i 5393 |
. . . . . 6
                    
 
        |
| 51 | | ssun2 3777 |
. . . . . . 7
         |
| 52 | | ssmin 4496 |
. . . . . . 7
            
 
   |
| 53 | 51, 52 | sstri 3612 |
. . . . . 6
                |
| 54 | 50, 53 | eqsstri 3635 |
. . . . 5
                    
 
           
 
   |
| 55 | 54 | a1i 11 |
. . . 4
         
 
 
                            |
| 56 | | simprl 794 |
. . . . . 6
 
  

     
  |
| 57 | 56 | cotrintab 37921 |
. . . . 5
      
        
  

     
      
      |
| 58 | 57 | a1i 11 |
. . . 4
    
  

          

     
      
       |
| 59 | | id 22 |
. . . . . 6
                           |
| 60 | 59, 59 | coeq12d 5286 |
. . . . 5
                                   
 
     |
| 61 | 60, 59 | sseq12d 3634 |
. . . 4
               
        
 
 
                    
 
     |
| 62 | | dmeq 5324 |
. . . . . . 7
            
              |
| 63 | | rneq 5351 |
. . . . . . 7
            
              |
| 64 | 62, 63 | uneq12d 3768 |
. . . . . 6
             
                     
 
     |
| 65 | 64 | reseq2d 5396 |
. . . . 5
                                    
 
      |
| 66 | 65, 59 | sseq12d 3634 |
. . . 4
              
                      
 
           
 
     |
| 67 | | id 22 |
. . . . . 6
       
          
        |
| 68 | 67, 67 | coeq12d 5286 |
. . . . 5
       
          
  

          

        |
| 69 | 68, 67 | sseq12d 3634 |
. . . 4
       
               
          

     
      
        |
| 70 | 9, 18, 21, 55, 58, 61, 66, 69 | mptrcllem 37920 |
. . 3
       
                     |
| 71 | | df-3an 1039 |
. . . . . . 7
    
 
     
      |
| 72 | | ancom 466 |
. . . . . . . . 9
    
 
      |
| 73 | | unss 3787 |
. . . . . . . . 9
 
           |
| 74 | 72, 73 | bitri 264 |
. . . . . . . 8
    
     
  |
| 75 | 74 | anbi1i 731 |
. . . . . . 7
     
               |
| 76 | 71, 75 | bitr2i 265 |
. . . . . 6
      
 
    
 
   |
| 77 | 76 | abbii 2739 |
. . . . 5
            

 
     |
| 78 | 77 | inteqi 4479 |
. . . 4
              

 
     |
| 79 | 78 | mpteq2i 4741 |
. . 3
                    
 
    |
| 80 | 6, 70, 79 | 3eqtri 2648 |
. 2
                    
 
    |
| 81 | 1, 80 | eqtr4i 2647 |
1

     
         |