Proof of Theorem vtarsu
| Step | Hyp | Ref
| Expression |
| 1 | | valtar 15260 |
. . . 4
   tar                         tarskiMap           |
| 2 | 1 | 3adant3 896 |
. . 3
   tar                         tarskiMap           |
| 3 | 2 | fveq1d 4683 |
. 2
    tar      
                      tarskiMap              |
| 4 | | fvres 4691 |
. . 3

            
 

     tarskiMap                 
      
       tarskiMap             |
| 5 | 4 | 3ad2ant3 899 |
. 2
                


     tarskiMap                 
      
       tarskiMap             |
| 6 | | ordsuccl2 14431 |
. . . . . 6
     |
| 7 | | onelon 3683 |
. . . . . 6
     |
| 8 | 6, 7 | syldan 516 |
. . . . 5
     |
| 9 | 8 | 3adant1 894 |
. . . 4
     |
| 10 | | rdgsuc 5153 |
. . . 4

     
      
       tarskiMap                    
 

     tarskiMap           
      
       tarskiMap              |
| 11 | 9, 10 | syl 12 |
. . 3
        
      
       tarskiMap                    
 

     tarskiMap           
      
       tarskiMap              |
| 12 | 6 | 3adant1 894 |
. . . . 5
     |
| 13 | | fvres 4691 |
. . . . . 6

            
 

     tarskiMap                                tarskiMap             |
| 14 | 13 | eqcomd 1889 |
. . . . 5

     
      
       tarskiMap                 
      
       tarskiMap              |
| 15 | 12, 14 | syl 12 |
. . . 4
        
      
       tarskiMap                 
      
       tarskiMap              |
| 16 | 15 | fveq2d 4685 |
. . 3
             


     tarskiMap           
      
       tarskiMap                     
 

     tarskiMap                  
 

     tarskiMap               |
| 17 | 1 | eqcomd 1889 |
. . . . . . 7
                       tarskiMap         tar       |
| 18 | 17 | 3adant3 896 |
. . . . . 6
        
      
       tarskiMap         tar       |
| 19 | 18 | fveq1d 4683 |
. . . . 5
                


     tarskiMap             tar          |
| 20 | 19 | fveq2d 4685 |
. . . 4
             


     tarskiMap                  
 

     tarskiMap                      
 

     tarskiMap       tar  
        |
| 21 | | rexeq 2267 |
. . . . . . . . . 10
  tar            tar            |
| 22 | 21 | abbidv 2008 |
. . . . . . . . 9
  tar        



  tar            |
| 23 | | rexeq 2267 |
. . . . . . . . . 10
  tar             tar             |
| 24 | 23 | abbidv 2008 |
. . . . . . . . 9
  tar        

   
 tar             |
| 25 | 22, 24 | uneq12d 2756 |
. . . . . . . 8
  tar          
 

       tar  
        
 tar              |
| 26 | | pweq 3036 |
. . . . . . . 8
  tar           tar          |
| 27 | 25, 26 | uneq12d 2756 |
. . . . . . 7
  tar                         tar           
 tar              tar           |
| 28 | 27 | ineq1d 2795 |
. . . . . 6
  tar             
       tarskiMap       
 tar         

  tar              tar         tarskiMap     |
| 29 | 28 | fvopabg 4748 |
. . . . 5
   tar              tar           
 tar              tar         tarskiMap                      tarskiMap       tar               tar           
 tar              tar         tarskiMap     |
| 30 | | fvex 4689 |
. . . . 5
 tar         |
| 31 | | fvex 4689 |
. . . . . . 7
tarskiMap   |
| 32 | 31 | inex2 3453 |
. . . . . 6
      tar  
        
 tar              tar         tarskiMap    |
| 33 | 32 | a1i 8 |
. . . . 5
         tar  
        
 tar              tar         tarskiMap     |
| 34 | 29, 30, 33 | sylancr 526 |
. . . 4
             


     tarskiMap       tar  
          
 tar         

  tar              tar         tarskiMap     |
| 35 | 20, 34 | eqtrd 1925 |
. . 3
             


     tarskiMap                  
 

     tarskiMap                   tar  
        
 tar              tar         tarskiMap     |
| 36 | 11, 16, 35 | 3eqtrd 1929 |
. 2
        
      
       tarskiMap                 tar  
        
 tar              tar         tarskiMap     |
| 37 | 3, 5, 36 | 3eqtrd 1929 |
1
    tar      
     
 tar         

  tar              tar         tarskiMap     |