Proof of Theorem valtar
| Step | Hyp | Ref
| Expression |
| 1 | | df-tar 15259 |
. . . 4
tar             
      
       tarskiMap           |
| 2 | 1 | fveq1i 4682 |
. . 3
tar                         


     tarskiMap                 |
| 3 | 2 | a1i 8 |
. 2
   tar                         


     tarskiMap                  |
| 4 | | df-opr 4886 |
. . . 4
                     


     tarskiMap                                


     tarskiMap                 |
| 5 | 4 | eqcomi 1888 |
. . 3
                    


     tarskiMap                                             tarskiMap             |
| 6 | 5 | a1i 8 |
. 2
                       


     tarskiMap                                             tarskiMap              |
| 7 | | elisset 2299 |
. . . 4

  |
| 8 | 7 | adantr 425 |
. . 3
     |
| 9 | | elisset 2299 |
. . . 4

  |
| 10 | 9 | adantl 424 |
. . 3
     |
| 11 | | rdgfnon 5147 |
. . . . . 6
          
 

     tarskiMap         |
| 12 | 11 | a1i 8 |
. . . . 5
             
 

     tarskiMap          |
| 13 | | fnfun 4510 |
. . . . 5
     
      
       tarskiMap                   


     tarskiMap          |
| 14 | 12, 13 | syl 12 |
. . . 4
             
 

     tarskiMap          |
| 15 | | resfunexg 4500 |
. . . 4
            
 

     tarskiMap                             tarskiMap        
  |
| 16 | 14, 15 | sylancom 531 |
. . 3
                       tarskiMap        
  |
| 17 | | fveq2 4681 |
. . . . . . . . . 10
 tarskiMap  tarskiMap    |
| 18 | 17 | ineq2d 2796 |
. . . . . . . . 9
      


     tarskiMap        
       tarskiMap     |
| 19 | 18 | eqeq2d 1895 |
. . . . . . . 8
       
       tarskiMap                tarskiMap      |
| 20 | 19 | opabbidv 3401 |
. . . . . . 7
          


     tarskiMap             


     tarskiMap      |
| 21 | | rdgeq1 5142 |
. . . . . . 7
          


     tarskiMap             


     tarskiMap                       tarskiMap                           tarskiMap          |
| 22 | 20, 21 | syl 12 |
. . . . . 6
     
      
       tarskiMap                           tarskiMap          |
| 23 | | sneq 3054 |
. . . . . . 7
       |
| 24 | | rdgeq2 5143 |
. . . . . . 7
                        tarskiMap                           tarskiMap          |
| 25 | 23, 24 | syl 12 |
. . . . . 6
     
      
       tarskiMap                           tarskiMap          |
| 26 | 22, 25 | eqtrd 1925 |
. . . . 5
     
      
       tarskiMap                           tarskiMap          |
| 27 | | reseq1 4218 |
. . . . 5
     
      
       tarskiMap                           tarskiMap             
      
       tarskiMap                             tarskiMap           |
| 28 | 26, 27 | syl 12 |
. . . 4
             


     tarskiMap                     


     tarskiMap           |
| 29 | | reseq2 4219 |
. . . 4
             


     tarskiMap                     


     tarskiMap           |
| 30 | | reloprab 4918 |
. . . . . 6
            
      
       tarskiMap           |
| 31 | | reldmoprab 4934 |
. . . . . 6
                   


     tarskiMap           |
| 32 | | resid2 14425 |
. . . . . 6
                             tarskiMap                             


     tarskiMap                               


     tarskiMap                                


     tarskiMap            |
| 33 | 30, 31, 32 | mp2an 761 |
. . . . 5
                    


     tarskiMap                                


     tarskiMap           |
| 34 | | resoprab 4938 |
. . . . 5
                    


     tarskiMap                     
      
      
       tarskiMap            |
| 35 | 33, 34 | eqtr3i 1910 |
. . . 4
                           tarskiMap                               
 

     tarskiMap            |
| 36 | 28, 29, 35 | oprabval2g 4956 |
. . 3
 
           
 

     tarskiMap         
                     


     tarskiMap                 
      
       tarskiMap           |
| 37 | 8, 10, 16, 36 | syl111anc 1100 |
. 2
                        


     tarskiMap                 
      
       tarskiMap           |
| 38 | 3, 6, 37 | 3eqtrd 1929 |
1
   tar                         tarskiMap           |