| Step | Hyp | Ref
| Expression |
| 1 | | elex 3212 |
. 2
   |
| 2 | | fveq2 6191 |
. . . . 5
           |
| 3 | | hdmapval.h |
. . . . 5
     |
| 4 | 2, 3 | syl6eqr 2674 |
. . . 4
       |
| 5 | | fveq2 6191 |
. . . . . . . 8
           |
| 6 | 5 | reseq2d 5396 |
. . . . . . 7
     
       |
| 7 | | fveq2 6191 |
. . . . . . . . 9
           |
| 8 | 7 | fveq1d 6193 |
. . . . . . . 8
                   |
| 9 | 8 | reseq2d 5396 |
. . . . . . 7
         
           |
| 10 | 6, 9 | opeq12d 4410 |
. . . . . 6
       
                             |
| 11 | | fveq2 6191 |
. . . . . . . 8
           |
| 12 | 11 | fveq1d 6193 |
. . . . . . 7
                   |
| 13 | | fveq2 6191 |
. . . . . . . . . 10
 HDMap1  HDMap1    |
| 14 | 13 | fveq1d 6193 |
. . . . . . . . 9
  HDMap1      HDMap1       |
| 15 | | fveq2 6191 |
. . . . . . . . . . . . . 14
 LCDual  LCDual    |
| 16 | 15 | fveq1d 6193 |
. . . . . . . . . . . . 13
  LCDual      LCDual       |
| 17 | 16 | fveq2d 6195 |
. . . . . . . . . . . 12
     LCDual          LCDual        |
| 18 | | fveq2 6191 |
. . . . . . . . . . . . . . . . . . . . 21
 HVMap  HVMap    |
| 19 | 18 | fveq1d 6193 |
. . . . . . . . . . . . . . . . . . . 20
  HVMap      HVMap       |
| 20 | 19 | fveq1d 6193 |
. . . . . . . . . . . . . . . . . . 19
   HVMap          HVMap          |
| 21 | 20 | oteq2d 4415 |
. . . . . . . . . . . . . . . . . 18
     HVMap              HVMap            |
| 22 | 21 | fveq2d 6195 |
. . . . . . . . . . . . . . . . 17
        HVMap                  HVMap             |
| 23 | 22 | oteq2d 4415 |
. . . . . . . . . . . . . . . 16
          HVMap                      HVMap               |
| 24 | 23 | fveq2d 6195 |
. . . . . . . . . . . . . . 15
             HVMap                          HVMap                |
| 25 | 24 | eqeq2d 2632 |
. . . . . . . . . . . . . 14
              HVMap                          HVMap                 |
| 26 | 25 | imbi2d 330 |
. . . . . . . . . . . . 13
                                     HVMap                                                  HVMap                  |
| 27 | 26 | ralbidv 2986 |
. . . . . . . . . . . 12
  
                                   HVMap                                                   HVMap                  |
| 28 | 17, 27 | riotaeqbidv 6614 |
. . . . . . . . . . 11
       LCDual                                           HVMap                 
    LCDual       

                                  HVMap                  |
| 29 | 28 | mpteq2dv 4745 |
. . . . . . . . . 10
   
    LCDual       

                                  HVMap                        LCDual       

                     
            HVMap                   |
| 30 | 29 | eleq2d 2687 |
. . . . . . . . 9
         LCDual       

                     
            HVMap                        LCDual       

                     
            HVMap                    |
| 31 | 14, 30 | sbceqbid 3442 |
. . . . . . . 8
    HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                    |
| 32 | 31 | sbcbidv 3490 |
. . . . . . 7
        ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                    |
| 33 | 12, 32 | sbceqbid 3442 |
. . . . . 6
            ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)

      LCDual       

                     
            HVMap                           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)

      LCDual       

                     
            HVMap                    |
| 34 | 10, 33 | sbceqbid 3442 |
. . . . 5
                     ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                                    ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                    |
| 35 | 34 | abbidv 2741 |
. . . 4
         
           ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                          
           ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                    |
| 36 | 4, 35 | mpteq12dv 4733 |
. . 3
              
           ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                      
                 ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                     |
| 37 | | df-hdmap 37084 |
. . 3
HDMap               
           ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                     |
| 38 | | fvex 6201 |
. . . . 5
     |
| 39 | 3, 38 | eqeltri 2697 |
. . . 4
 |
| 40 | 39 | mptex 6486 |
. . 3
         
           ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                    |
| 41 | 36, 37, 40 | fvmpt 6282 |
. 2
 HDMap     
                 ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                     |
| 42 | 1, 41 | syl 17 |
1
 HDMap     
                 ![]. ].](_drbrack.gif)           ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)   HDMap1      ![]. ].](_drbrack.gif)        LCDual       

                                  HVMap                     |