| Step | Hyp | Ref
| Expression |
| 1 | | fthmon.b |
. . 3
     |
| 2 | | ffthiso.s |
. . 3
   |
| 3 | | ffthiso.t |
. . 3
   |
| 4 | | fthmon.f |
. . . . 5
   Faith     |
| 5 | | fthfunc 16567 |
. . . . . 6
 Faith     |
| 6 | 5 | ssbri 4697 |
. . . . 5
   Faith  
      |
| 7 | 4, 6 | syl 17 |
. . . 4
       |
| 8 | 7 | adantr 481 |
. . 3
 
    
      |
| 9 | | fthmon.x |
. . . 4
   |
| 10 | 9 | adantr 481 |
. . 3
 
    
  |
| 11 | | fthmon.y |
. . . 4
   |
| 12 | 11 | adantr 481 |
. . 3
 
    
  |
| 13 | | simpr 477 |
. . 3
 
    
      |
| 14 | 1, 2, 3, 8, 10, 12, 13 | funciso 16534 |
. 2
 
    
                      |
| 15 | | eqid 2622 |
. . . 4
Inv  Inv   |
| 16 | | df-br 4654 |
. . . . . . . 8
    
       |
| 17 | 7, 16 | sylib 208 |
. . . . . . 7
        |
| 18 | | funcrcl 16523 |
. . . . . . 7
  
  
    |
| 19 | 17, 18 | syl 17 |
. . . . . 6
     |
| 20 | 19 | simpld 475 |
. . . . 5
   |
| 21 | 20 | ad3antrrr 766 |
. . . 4
                                     Inv                           
  |
| 22 | 9 | ad3antrrr 766 |
. . . 4
                                     Inv                           
  |
| 23 | 11 | ad3antrrr 766 |
. . . 4
                                     Inv                           
  |
| 24 | | eqid 2622 |
. . . . . . . . . . 11
         |
| 25 | | eqid 2622 |
. . . . . . . . . . 11
Inv  Inv   |
| 26 | 19 | simprd 479 |
. . . . . . . . . . 11
   |
| 27 | 1, 24, 7 | funcf1 16526 |
. . . . . . . . . . . 12
           |
| 28 | 27, 9 | ffvelrnd 6360 |
. . . . . . . . . . 11
           |
| 29 | 27, 11 | ffvelrnd 6360 |
. . . . . . . . . . 11
           |
| 30 | 24, 25, 26, 28, 29, 3 | isoval 16425 |
. . . . . . . . . 10
                   Inv          |
| 31 | 30 | eleq2d 2687 |
. . . . . . . . 9
                                    Inv           |
| 32 | 31 | biimpa 501 |
. . . . . . . 8
 
                    
              Inv          |
| 33 | 24, 25, 26, 28, 29 | invfun 16424 |
. . . . . . . . . 10
       Inv          |
| 34 | 33 | adantr 481 |
. . . . . . . . 9
 
                    
      Inv          |
| 35 | | funfvbrb 6330 |
. . . . . . . . 9
       Inv                       Inv                       Inv                Inv                      |
| 36 | 34, 35 | syl 17 |
. . . . . . . 8
 
                    
               Inv       
               Inv                Inv                      |
| 37 | 32, 36 | mpbid 222 |
. . . . . . 7
 
                    
               Inv                Inv                     |
| 38 | 37 | ad2antrr 762 |
. . . . . 6
                                     Inv                           
               Inv                Inv                     |
| 39 | | simpr 477 |
. . . . . 6
                                     Inv                           
       Inv                             |
| 40 | 38, 39 | breqtrd 4679 |
. . . . 5
                                     Inv                           
               Inv                   |
| 41 | | fthmon.h |
. . . . . 6
    |
| 42 | 4 | ad3antrrr 766 |
. . . . . 6
                                     Inv                           
  Faith     |
| 43 | | fthmon.r |
. . . . . . 7
       |
| 44 | 43 | ad3antrrr 766 |
. . . . . 6
                                     Inv                           
      |
| 45 | | simplr 792 |
. . . . . 6
                                     Inv                           
      |
| 46 | 1, 41, 42, 22, 23, 44, 45, 15, 25 | fthinv 16586 |
. . . . 5
                                     Inv                           
    Inv                    Inv                    |
| 47 | 40, 46 | mpbird 247 |
. . . 4
                                     Inv                           
   Inv       |
| 48 | 1, 15, 21, 22, 23, 2, 47 | inviso1 16426 |
. . 3
                                     Inv                           
      |
| 49 | | eqid 2622 |
. . . 4
       |
| 50 | | ffthiso.f |
. . . . 5
   Full     |
| 51 | 50 | adantr 481 |
. . . 4
 
                    
  Full     |
| 52 | 11 | adantr 481 |
. . . 4
 
                    
  |
| 53 | 9 | adantr 481 |
. . . 4
 
                    
  |
| 54 | 24, 49, 3, 26, 29, 28 | isohom 16436 |
. . . . . 6
            
      
          |
| 55 | 54 | adantr 481 |
. . . . 5
 
                    
                             |
| 56 | 24, 25, 26, 28, 29, 3 | invf 16428 |
. . . . . 6
       Inv                                      |
| 57 | 56 | ffvelrnda 6359 |
. . . . 5
 
                    
       Inv                                 |
| 58 | 55, 57 | sseldd 3604 |
. . . 4
 
                    
       Inv                                    |
| 59 | 1, 49, 41, 51, 52, 53, 58 | fulli 16573 |
. . 3
 
                    
             Inv                             |
| 60 | 48, 59 | r19.29a 3078 |
. 2
 
                    
      |
| 61 | 14, 60 | impbida 877 |
1
                             |