Proof of Theorem ipdirilem
| Step | Hyp | Ref
| Expression |
| 1 | | 2cn 7164 |
. . . . . . 7
 |
| 2 | | 2ne0 7174 |
. . . . . . 7
 |
| 3 | 1, 2 | recidi 6916 |
. . . . . 6
     |
| 4 | 3 | opreq1i 4892 |
. . . . 5
                     |
| 5 | | ip1i.9 |
. . . . . . 7
CPreHil |
| 6 | 5 | phnvi 9816 |
. . . . . 6
NrmCVec |
| 7 | 1, 2 | reccli 6902 |
. . . . . . 7
   |
| 8 | | ipdiri.8 |
. . . . . . . 8
 |
| 9 | | ipdiri.9 |
. . . . . . . 8
 |
| 10 | | ip1i.1 |
. . . . . . . . 9
BaseSet   |
| 11 | | ip1i.2 |
. . . . . . . . 9
     |
| 12 | 10, 11 | nvgcl 9571 |
. . . . . . . 8
  NrmCVec
       |
| 13 | 6, 8, 9, 12 | mp3an 1191 |
. . . . . . 7
     |
| 14 | 1, 7, 13 | 3pm3.2i 1048 |
. . . . . 6
         |
| 15 | | ip1i.4 |
. . . . . . 7
     |
| 16 | 10, 15 | nvsass 9581 |
. . . . . 6
  NrmCVec                                      |
| 17 | 6, 14, 16 | mp2an 761 |
. . . . 5
                           |
| 18 | 10, 15 | nvsid 9580 |
. . . . . 6
  NrmCVec                    |
| 19 | 6, 13, 18 | mp2an 761 |
. . . . 5
             |
| 20 | 4, 17, 19 | 3eqtr3i 1918 |
. . . 4
                   |
| 21 | 20 | opreq1i 4892 |
. . 3
                           |
| 22 | | ip1i.7 |
. . . 4
     |
| 23 | 10, 15 | nvscl 9579 |
. . . . 5
  NrmCVec                    |
| 24 | 6, 7, 13, 23 | mp3an 1191 |
. . . 4
           |
| 25 | | ipdiri.10 |
. . . 4
 |
| 26 | 10, 11, 15, 22, 5, 24, 25 | ip2i 9828 |
. . 3
                                   |
| 27 | 21, 26 | eqtr3i 1910 |
. 2
                         |
| 28 | | ax1cn 6422 |
. . . . . . 7
 |
| 29 | 28 | negcli 6526 |
. . . . . 6
  |
| 30 | 10, 15 | nvscl 9579 |
. . . . . 6
  NrmCVec 
        |
| 31 | 6, 29, 9, 30 | mp3an 1191 |
. . . . 5
      |
| 32 | 10, 11 | nvgcl 9571 |
. . . . 5
  NrmCVec
                 |
| 33 | 6, 8, 31, 32 | mp3an 1191 |
. . . 4
          |
| 34 | 10, 15 | nvscl 9579 |
. . . 4
  NrmCVec                              |
| 35 | 6, 7, 33, 34 | mp3an 1191 |
. . 3
                |
| 36 | 10, 11, 15, 22, 5, 24, 35, 25 | ip1i 9827 |
. 2
                                                                                          |
| 37 | 7, 13, 33 | 3pm3.2i 1048 |
. . . . . 6
                  |
| 38 | 10, 11, 15 | nvdi 9583 |
. . . . . 6
  NrmCVec                                                                         |
| 39 | 6, 37, 38 | mp2an 761 |
. . . . 5
                                                     |
| 40 | | eqid 1884 |
. . . . . . . . . . . 12
         |
| 41 | 40 | nvvc 9566 |
. . . . . . . . . . 11

NrmCVec     CVec |
| 42 | 6, 41 | ax-mp 7 |
. . . . . . . . . 10
    CVec |
| 43 | 11 | vafval 9554 |
. . . . . . . . . . 11
         |
| 44 | 43 | vcabl 9508 |
. . . . . . . . . 10
    
CVec Abel |
| 45 | 42, 44 | ax-mp 7 |
. . . . . . . . 9
Abel |
| 46 | 8, 9 | pm3.2i 307 |
. . . . . . . . 9

  |
| 47 | 8, 31 | pm3.2i 307 |
. . . . . . . . 9

       |
| 48 | 10, 11 | bafval 9555 |
. . . . . . . . . 10
 |
| 49 | 48 | abl4 9413 |
. . . . . . . . 9
  Abel                                               |
| 50 | 45, 46, 47, 49 | mp3an 1191 |
. . . . . . . 8
                                   |
| 51 | 15 | smfval 9556 |
. . . . . . . . . . 11
         |
| 52 | 43, 51, 48 | vc2 9506 |
. . . . . . . . . 10
      CVec
           |
| 53 | 42, 8, 52 | mp2an 761 |
. . . . . . . . 9
         |
| 54 | | eqid 1884 |
. . . . . . . . . . 11
         |
| 55 | 10, 11, 15, 54 | nvrinv 9605 |
. . . . . . . . . 10
  NrmCVec                 |
| 56 | 6, 9, 55 | mp2an 761 |
. . . . . . . . 9
              |
| 57 | 53, 56 | opreq12i 4894 |
. . . . . . . 8
                              |
| 58 | 10, 15 | nvscl 9579 |
. . . . . . . . . 10
  NrmCVec        |
| 59 | 6, 1, 8, 58 | mp3an 1191 |
. . . . . . . . 9
     |
| 60 | 10, 11, 54 | nv0rid 9588 |
. . . . . . . . 9
  NrmCVec                        |
| 61 | 6, 59, 60 | mp2an 761 |
. . . . . . . 8
                 |
| 62 | 50, 57, 61 | 3eqtri 1912 |
. . . . . . 7
                      |
| 63 | 62 | opreq2i 4893 |
. . . . . 6
                                  |
| 64 | 7, 1, 8 | 3pm3.2i 1048 |
. . . . . . 7
  
  |
| 65 | 10, 15 | nvsass 9581 |
. . . . . . 7
  NrmCVec   
                      |
| 66 | 6, 64, 65 | mp2an 761 |
. . . . . 6
                   |
| 67 | 28, 1, 2 | divcan1i 6906 |
. . . . . . . 8
     |
| 68 | 67 | opreq1i 4892 |
. . . . . . 7
             |
| 69 | 10, 15 | nvsid 9580 |
. . . . . . . 8
  NrmCVec        |
| 70 | 6, 8, 69 | mp2an 761 |
. . . . . . 7
     |
| 71 | 68, 70 | eqtri 1908 |
. . . . . 6
         |
| 72 | 63, 66, 71 | 3eqtr2i 1915 |
. . . . 5
                        |
| 73 | 39, 72 | eqtr3i 1910 |
. . . 4
                              |
| 74 | 73 | opreq1i 4892 |
. . 3
                                      |
| 75 | 10, 15 | nvscl 9579 |
. . . . . . . . 9
  NrmCVec 
        |
| 76 | 6, 29, 8, 75 | mp3an 1191 |
. . . . . . . 8
      |
| 77 | 10, 11 | nvgcl 9571 |
. . . . . . . 8
  NrmCVec     
            |
| 78 | 6, 76, 9, 77 | mp3an 1191 |
. . . . . . 7
          |
| 79 | 7, 13, 78 | 3pm3.2i 1048 |
. . . . . 6
                  |
| 80 | 10, 11, 15 | nvdi 9583 |
. . . . . 6
  NrmCVec                                                                         |
| 81 | 6, 79, 80 | mp2an 761 |
. . . . 5
                                                     |
| 82 | 76, 9 | pm3.2i 307 |
. . . . . . . . 9
        |
| 83 | 48 | abl4 9413 |
. . . . . . . . 9
  Abel        
                                      |
| 84 | 45, 46, 82, 83 | mp3an 1191 |
. . . . . . . 8
                                   |
| 85 | 10, 11, 15, 54 | nvrinv 9605 |
. . . . . . . . . . 11
  NrmCVec                 |
| 86 | 6, 8, 85 | mp2an 761 |
. . . . . . . . . 10
              |
| 87 | 86 | opreq1i 4892 |
. . . . . . . . 9
                              |
| 88 | 10, 11 | nvgcl 9571 |
. . . . . . . . . . 11
  NrmCVec
       |
| 89 | 6, 9, 9, 88 | mp3an 1191 |
. . . . . . . . . 10
     |
| 90 | 10, 11, 54 | nv0lid 9589 |
. . . . . . . . . 10
  NrmCVec                        |
| 91 | 6, 89, 90 | mp2an 761 |
. . . . . . . . 9
                 |
| 92 | 87, 91 | eqtri 1908 |
. . . . . . . 8
                      |
| 93 | 43, 51, 48 | vc2 9506 |
. . . . . . . . 9
      CVec
           |
| 94 | 42, 9, 93 | mp2an 761 |
. . . . . . . 8
         |
| 95 | 84, 92, 94 | 3eqtri 1912 |
. . . . . . 7
                      |
| 96 | 95 | opreq2i 4893 |
. . . . . 6
                                  |
| 97 | 7, 1, 9 | 3pm3.2i 1048 |
. . . . . . . 8
  
  |
| 98 | 10, 15 | nvsass 9581 |
. . . . . . . 8
  NrmCVec   
                      |
| 99 | 6, 97, 98 | mp2an 761 |
. . . . . . 7
                   |
| 100 | 67 | opreq1i 4892 |
. . . . . . 7
             |
| 101 | 99, 100 | eqtr3i 1910 |
. . . . . 6
               |
| 102 | 10, 15 | nvsid 9580 |
. . . . . . 7
  NrmCVec        |
| 103 | 6, 9, 102 | mp2an 761 |
. . . . . 6
     |
| 104 | 96, 101, 103 | 3eqtrri 1913 |
. . . . 5
                        |
| 105 | 29, 7, 33 | 3pm3.2i 1048 |
. . . . . . . 8
               |
| 106 | 10, 15 | nvsass 9581 |
. . . . . . . 8
  NrmCVec                                                        |
| 107 | 6, 105, 106 | mp2an 761 |
. . . . . . 7
                                       |
| 108 | 29, 7 | mulcomi 6476 |
. . . . . . . . 9
           |
| 109 | 108 | opreq1i 4892 |
. . . . . . . 8
                                     |
| 110 | 7, 29, 33 | 3pm3.2i 1048 |
. . . . . . . . 9
               |
| 111 | 10, 15 | nvsass 9581 |
. . . . . . . . 9
  NrmCVec                                                        |
| 112 | 6, 110, 111 | mp2an 761 |
. . . . . . . 8
                                       |
| 113 | 29, 8, 31 | 3pm3.2i 1048 |
. . . . . . . . . . 11
         |
| 114 | 10, 11, 15 | nvdi 9583 |
. . . . . . . . . . 11
  NrmCVec                                             |
| 115 | 6, 113, 114 | mp2an 761 |
. . . . . . . . . 10
                                  |
| 116 | 28, 28 | mul2negi 6610 |
. . . . . . . . . . . . . 14
       |
| 117 | 28 | mulid1i 6485 |
. . . . . . . . . . . . . 14
   |
| 118 | 116, 117 | eqtri 1908 |
. . . . . . . . . . . . 13
     |
| 119 | 118 | opreq1i 4892 |
. . . . . . . . . . . 12
             |
| 120 | 29, 29, 9 | 3pm3.2i 1048 |
. . . . . . . . . . . . 13
     |
| 121 | 10, 15 | nvsass 9581 |
. . . . . . . . . . . . 13
  NrmCVec                          |
| 122 | 6, 120, 121 | mp2an 761 |
. . . . . . . . . . . 12
                   |
| 123 | 119, 122, 103 | 3eqtr3i 1918 |
. . . . . . . . . . 11
           |
| 124 | 123 | opreq2i 4893 |
. . . . . . . . . 10
                             |
| 125 | 115, 124 | eqtri 1908 |
. . . . . . . . 9
                        |
| 126 | 125 | opreq2i 4893 |
. . . . . . . 8
                                    |
| 127 | 109, 112, 126 | 3eqtri 1912 |
. . . . . . 7
                                  |
| 128 | 107, 127 | eqtr3i 1910 |
. . . . . 6
                                    |
| 129 | 128 | opreq2i 4893 |
. . . . 5
                                                                |
| 130 | 81, 104, 129 | 3eqtr4ri 1923 |
. . . 4
                                   |
| 131 | 130 | opreq1i 4892 |
. . 3
                                           |
| 132 | 74, 131 | opreq12i 4894 |
. 2
                                                                                    |
| 133 | 27, 36, 132 | 3eqtr2i 1915 |
1
                   |