| Step | Hyp | Ref
| Expression |
| 1 | | htpycc.2 |
. 2
 TopOn    |
| 2 | | htpycc.4 |
. 2
     |
| 3 | | htpycc.6 |
. 2
     |
| 4 | | htpycc.1 |
. . 3
 
  ![[,] [,]](_icc.gif)                         |
| 5 | | iitopon 22682 |
. . . . 5
TopOn   ![[,] [,]](_icc.gif)    |
| 6 | 5 | a1i 11 |
. . . 4
 TopOn   ![[,] [,]](_icc.gif)     |
| 7 | | eqid 2622 |
. . . . 5
         |
| 8 | | eqid 2622 |
. . . . 5
     ↾t   ![[,] [,]](_icc.gif)          ↾t   ![[,] [,]](_icc.gif)      |
| 9 | | eqid 2622 |
. . . . 5
     ↾t     ![[,] [,]](_icc.gif)        ↾t     ![[,] [,]](_icc.gif)    |
| 10 | | dfii2 22685 |
. . . . 5
     ↾t   ![[,] [,]](_icc.gif)    |
| 11 | | 0red 10041 |
. . . . 5
   |
| 12 | | 1red 10055 |
. . . . 5
   |
| 13 | | halfre 11246 |
. . . . . . 7
   |
| 14 | | 0re 10040 |
. . . . . . . 8
 |
| 15 | | halfgt0 11248 |
. . . . . . . 8
   |
| 16 | 14, 13, 15 | ltleii 10160 |
. . . . . . 7
   |
| 17 | | 1re 10039 |
. . . . . . . 8
 |
| 18 | | halflt1 11250 |
. . . . . . . 8
   |
| 19 | 13, 17, 18 | ltleii 10160 |
. . . . . . 7
   |
| 20 | 14, 17 | elicc2i 12239 |
. . . . . . 7
     ![[,] [,]](_icc.gif) 
    
     |
| 21 | 13, 16, 19, 20 | mpbir3an 1244 |
. . . . . 6
    ![[,] [,]](_icc.gif)   |
| 22 | 21 | a1i 11 |
. . . . 5
     ![[,] [,]](_icc.gif)    |
| 23 | | htpycc.5 |
. . . . . . . . . . . 12
     |
| 24 | | htpycc.7 |
. . . . . . . . . . . 12
    Htpy      |
| 25 | 1, 2, 23, 24 | htpyi 22773 |
. . . . . . . . . . 11
 
                     |
| 26 | 25 | simprd 479 |
. . . . . . . . . 10
 
           |
| 27 | | htpycc.8 |
. . . . . . . . . . . 12
    Htpy      |
| 28 | 1, 23, 3, 27 | htpyi 22773 |
. . . . . . . . . . 11
 
                     |
| 29 | 28 | simpld 475 |
. . . . . . . . . 10
 
           |
| 30 | 26, 29 | eqtr4d 2659 |
. . . . . . . . 9
 
           |
| 31 | 30 | ralrimiva 2966 |
. . . . . . . 8
            |
| 32 | | oveq1 6657 |
. . . . . . . . . 10
           |
| 33 | | oveq1 6657 |
. . . . . . . . . 10
           |
| 34 | 32, 33 | eqeq12d 2637 |
. . . . . . . . 9
         
           |
| 35 | 34 | rspccva 3308 |
. . . . . . . 8
          
           |
| 36 | 31, 35 | sylan 488 |
. . . . . . 7
 
           |
| 37 | 36 | adantrl 752 |
. . . . . 6
 
               |
| 38 | | simprl 794 |
. . . . . . . . 9
 
         |
| 39 | 38 | oveq2d 6666 |
. . . . . . . 8
 
             |
| 40 | | 2cn 11091 |
. . . . . . . . 9
 |
| 41 | | 2ne0 11113 |
. . . . . . . . 9
 |
| 42 | 40, 41 | recidi 10756 |
. . . . . . . 8
     |
| 43 | 39, 42 | syl6eq 2672 |
. . . . . . 7
 
         |
| 44 | 43 | oveq2d 6666 |
. . . . . 6
 
                 |
| 45 | 43 | oveq1d 6665 |
. . . . . . . 8
 
             |
| 46 | | 1m1e0 11089 |
. . . . . . . 8
   |
| 47 | 45, 46 | syl6eq 2672 |
. . . . . . 7
 
           |
| 48 | 47 | oveq2d 6666 |
. . . . . 6
 
                   |
| 49 | 37, 44, 48 | 3eqtr4d 2666 |
. . . . 5
 
                     |
| 50 | | retopon 22567 |
. . . . . . . 8
    TopOn   |
| 51 | | iccssre 12255 |
. . . . . . . . 9
       ![[,] [,]](_icc.gif)      |
| 52 | 14, 13, 51 | mp2an 708 |
. . . . . . . 8
  ![[,] [,]](_icc.gif)     |
| 53 | | resttopon 20965 |
. . . . . . . 8
      TopOn    ![[,] [,]](_icc.gif)   
      ↾t   ![[,] [,]](_icc.gif)     TopOn   ![[,] [,]](_icc.gif)       |
| 54 | 50, 52, 53 | mp2an 708 |
. . . . . . 7
     ↾t   ![[,] [,]](_icc.gif)     TopOn   ![[,] [,]](_icc.gif)      |
| 55 | 54 | a1i 11 |
. . . . . 6
      ↾t   ![[,] [,]](_icc.gif)     TopOn   ![[,] [,]](_icc.gif)       |
| 56 | 55, 1 | cnmpt2nd 21472 |
. . . . . 6
    ![[,] [,]](_icc.gif)            
↾t   ![[,] [,]](_icc.gif)         |
| 57 | 55, 1 | cnmpt1st 21471 |
. . . . . . 7
    ![[,] [,]](_icc.gif)            
↾t   ![[,] [,]](_icc.gif)           ↾t   ![[,] [,]](_icc.gif)        |
| 58 | 8 | iihalf1cn 22731 |
. . . . . . . 8
   ![[,] [,]](_icc.gif)             ↾t   ![[,] [,]](_icc.gif)       |
| 59 | 58 | a1i 11 |
. . . . . . 7
    ![[,] [,]](_icc.gif)             ↾t   ![[,] [,]](_icc.gif)        |
| 60 | | oveq2 6658 |
. . . . . . 7
       |
| 61 | 55, 1, 57, 55, 59, 60 | cnmpt21 21474 |
. . . . . 6
    ![[,] [,]](_icc.gif)              
↾t   ![[,] [,]](_icc.gif)         |
| 62 | 1, 2, 23 | htpycn 22772 |
. . . . . . 7
    Htpy          |
| 63 | 62, 24 | sseldd 3604 |
. . . . . 6
       |
| 64 | 55, 1, 56, 61, 63 | cnmpt22f 21478 |
. . . . 5
    ![[,] [,]](_icc.gif)                  
↾t   ![[,] [,]](_icc.gif)         |
| 65 | | iccssre 12255 |
. . . . . . . . 9
   
     ![[,] [,]](_icc.gif) 
  |
| 66 | 13, 17, 65 | mp2an 708 |
. . . . . . . 8
    ![[,] [,]](_icc.gif)   |
| 67 | | resttopon 20965 |
. . . . . . . 8
      TopOn      ![[,] [,]](_icc.gif) 
      ↾t     ![[,] [,]](_icc.gif)   TopOn     ![[,] [,]](_icc.gif)     |
| 68 | 50, 66, 67 | mp2an 708 |
. . . . . . 7
     ↾t     ![[,] [,]](_icc.gif)   TopOn     ![[,] [,]](_icc.gif)    |
| 69 | 68 | a1i 11 |
. . . . . 6
      ↾t     ![[,] [,]](_icc.gif)   TopOn     ![[,] [,]](_icc.gif)     |
| 70 | 69, 1 | cnmpt2nd 21472 |
. . . . . 6
      ![[,] [,]](_icc.gif)          
↾t     ![[,] [,]](_icc.gif)       |
| 71 | 69, 1 | cnmpt1st 21471 |
. . . . . . 7
      ![[,] [,]](_icc.gif)          
↾t     ![[,] [,]](_icc.gif)         ↾t     ![[,] [,]](_icc.gif)      |
| 72 | 9 | iihalf2cn 22733 |
. . . . . . . 8
     ![[,] [,]](_icc.gif)             ↾t     ![[,] [,]](_icc.gif)     |
| 73 | 72 | a1i 11 |
. . . . . . 7
      ![[,] [,]](_icc.gif)             ↾t     ![[,] [,]](_icc.gif)      |
| 74 | 60 | oveq1d 6665 |
. . . . . . 7
           |
| 75 | 69, 1, 71, 69, 73, 74 | cnmpt21 21474 |
. . . . . 6
      ![[,] [,]](_icc.gif)              
↾t     ![[,] [,]](_icc.gif)       |
| 76 | 1, 23, 3 | htpycn 22772 |
. . . . . . 7
    Htpy          |
| 77 | 76, 27 | sseldd 3604 |
. . . . . 6
       |
| 78 | 69, 1, 70, 75, 77 | cnmpt22f 21478 |
. . . . 5
      ![[,] [,]](_icc.gif)                  
↾t     ![[,] [,]](_icc.gif)       |
| 79 | 7, 8, 9, 10, 11, 12, 22, 1, 49, 64, 78 | cnmpt2pc 22727 |
. . . 4
    ![[,] [,]](_icc.gif)                               |
| 80 | 6, 1, 79 | cnmptcom 21481 |
. . 3
  
  ![[,] [,]](_icc.gif)                          
   |
| 81 | 4, 80 | syl5eqel 2705 |
. 2
       |
| 82 | | simpr 477 |
. . . 4
 
   |
| 83 | | 0elunit 12290 |
. . . 4
  ![[,] [,]](_icc.gif)   |
| 84 | | simpr 477 |
. . . . . . . 8
 
   |
| 85 | 84, 16 | syl6eqbr 4692 |
. . . . . . 7
 
     |
| 86 | 85 | iftrued 4094 |
. . . . . 6
 
                              |
| 87 | | simpl 473 |
. . . . . . 7
 
   |
| 88 | 84 | oveq2d 6666 |
. . . . . . . 8
 
       |
| 89 | | 2t0e0 11183 |
. . . . . . . 8
   |
| 90 | 88, 89 | syl6eq 2672 |
. . . . . . 7
 
     |
| 91 | 87, 90 | oveq12d 6668 |
. . . . . 6
 
             |
| 92 | 86, 91 | eqtrd 2656 |
. . . . 5
 
                            |
| 93 | | ovex 6678 |
. . . . 5
     |
| 94 | 92, 4, 93 | ovmpt2a 6791 |
. . . 4
 
  ![[,] [,]](_icc.gif)             |
| 95 | 82, 83, 94 | sylancl 694 |
. . 3
 
           |
| 96 | 25 | simpld 475 |
. . 3
 
           |
| 97 | 95, 96 | eqtrd 2656 |
. 2
 
           |
| 98 | | 1elunit 12291 |
. . . 4
  ![[,] [,]](_icc.gif)   |
| 99 | 13, 17 | ltnlei 10158 |
. . . . . . . . 9
  
    |
| 100 | 18, 99 | mpbi 220 |
. . . . . . . 8
   |
| 101 | | simpr 477 |
. . . . . . . . 9
 
   |
| 102 | 101 | breq1d 4663 |
. . . . . . . 8
 
         |
| 103 | 100, 102 | mtbiri 317 |
. . . . . . 7
 

    |
| 104 | 103 | iffalsed 4097 |
. . . . . 6
 
                                |
| 105 | | simpl 473 |
. . . . . . 7
 
   |
| 106 | 101 | oveq2d 6666 |
. . . . . . . . . 10
 
       |
| 107 | | 2t1e2 11176 |
. . . . . . . . . 10
   |
| 108 | 106, 107 | syl6eq 2672 |
. . . . . . . . 9
 
     |
| 109 | 108 | oveq1d 6665 |
. . . . . . . 8
 
         |
| 110 | | 2m1e1 11135 |
. . . . . . . 8
   |
| 111 | 109, 110 | syl6eq 2672 |
. . . . . . 7
 
       |
| 112 | 105, 111 | oveq12d 6668 |
. . . . . 6
 
               |
| 113 | 104, 112 | eqtrd 2656 |
. . . . 5
 
                            |
| 114 | | ovex 6678 |
. . . . 5
     |
| 115 | 113, 4, 114 | ovmpt2a 6791 |
. . . 4
 
  ![[,] [,]](_icc.gif)             |
| 116 | 82, 98, 115 | sylancl 694 |
. . 3
 
           |
| 117 | 28 | simprd 479 |
. . 3
 
           |
| 118 | 116, 117 | eqtrd 2656 |
. 2
 
           |
| 119 | 1, 2, 3, 81, 97, 118 | ishtpyd 22774 |
1
    Htpy      |