Proof of Theorem efaddlem20
| Step | Hyp | Ref
| Expression |
| 1 | | efaddlem17.1 |
. . . . . . 7
 |
| 2 | 1 | nnsqcl 6605 |
. . . . . 6
     |
| 3 | 2 | nnre 5889 |
. . . . 5
     |
| 4 | | 2re 5936 |
. . . . . . 7
 |
| 5 | | efaddlem17.4 |
. . . . . . . . 9
         |
| 6 | 1, 5 | efaddlem8 7304 |
. . . . . . . 8
 |
| 7 | 6 | nnre 5889 |
. . . . . . 7
 |
| 8 | 4, 7 | remulcl 5318 |
. . . . . 6
   |
| 9 | 8 | resqcl 6568 |
. . . . 5
       |
| 10 | | efaddlem17.2 |
. . . . . . . . 9
 |
| 11 | | efaddlem17.3 |
. . . . . . . . 9
 |
| 12 | | efaddlem17.5 |
. . . . . . . . 9
                           |
| 13 | 10, 11, 12 | efaddlem7 7303 |
. . . . . . . 8
 |
| 14 | 13 | nnre 5889 |
. . . . . . 7
 |
| 15 | 6 | nnnn0 6064 |
. . . . . . 7
 |
| 16 | | reexpclt 6525 |
. . . . . . 7
  
      |
| 17 | 14, 15, 16 | mp2an 696 |
. . . . . 6
     |
| 18 | | facclt 6892 |
. . . . . . . 8

   
  |
| 19 | 15, 18 | ax-mp 7 |
. . . . . . 7
     |
| 20 | 19 | nnre 5889 |
. . . . . 6
     |
| 21 | | facne0t 6893 |
. . . . . . 7

   
  |
| 22 | 15, 21 | ax-mp 7 |
. . . . . 6
     |
| 23 | 17, 20, 22 | redivcl 5764 |
. . . . 5
    
      |
| 24 | 3, 9, 23 | 3pm3.2i 817 |
. . . 4
                       |
| 25 | 13 | nnnn0 6064 |
. . . . . . . 8
 |
| 26 | | nn0expclt 6522 |
. . . . . . . 8
 

      |
| 27 | 25, 15, 26 | mp2an 696 |
. . . . . . 7
     |
| 28 | 27 | nn0ge0 6075 |
. . . . . 6
     |
| 29 | 19 | nngt0 5908 |
. . . . . 6
     |
| 30 | 17, 20 | divge0 5822 |
. . . . . 6
               
       |
| 31 | 28, 29, 30 | mp2an 696 |
. . . . 5
           |
| 32 | 1 | nnre 5889 |
. . . . . . 7
 |
| 33 | | 0re 5423 |
. . . . . . . 8
 |
| 34 | 1 | nngt0 5908 |
. . . . . . . 8
 |
| 35 | 33, 32, 34 | ltlei 5564 |
. . . . . . 7
 |
| 36 | 32, 35 | pm3.2i 285 |
. . . . . 6

  |
| 37 | | nnzt 6110 |
. . . . . . . . . 10

  |
| 38 | 1, 37 | ax-mp 7 |
. . . . . . . . 9
 |
| 39 | | flhalft 6201 |
. . . . . . . . 9

            |
| 40 | 38, 39 | ax-mp 7 |
. . . . . . . 8
           |
| 41 | 5 | opreq2i 3967 |
. . . . . . . 8
             |
| 42 | 40, 41 | breqtrr 2636 |
. . . . . . 7
   |
| 43 | 8, 42 | pm3.2i 285 |
. . . . . 6
  
    |
| 44 | | le2sqit 6577 |
. . . . . 6
      
                |
| 45 | 36, 43, 44 | mp2an 696 |
. . . . 5
           |
| 46 | 31, 45 | pm3.2i 285 |
. . . 4
                       |
| 47 | | lemul1itOLD 5804 |
. . . 4
                                                                          
        |
| 48 | 24, 46, 47 | mp2an 696 |
. . 3
                                   |
| 49 | 9 | recn 5297 |
. . . 4
       |
| 50 | 17 | recn 5297 |
. . . 4
     |
| 51 | 19 | nncn 5890 |
. . . 4
     |
| 52 | 49, 50, 51, 22 | divass 5719 |
. . 3
                                     |
| 53 | 48, 52 | breqtrr 2636 |
. 2
                                   |
| 54 | | 2cn 5937 |
. . . . . . . 8
 |
| 55 | 6 | nncn 5890 |
. . . . . . . 8
 |
| 56 | 54, 55 | sqmul 6562 |
. . . . . . 7
                 |
| 57 | 54 | sqcl 6560 |
. . . . . . . 8
     |
| 58 | 6 | nnsqcl 6605 |
. . . . . . . . 9
     |
| 59 | 58 | nncn 5890 |
. . . . . . . 8
     |
| 60 | 57, 59 | mulcom 5306 |
. . . . . . 7
                     |
| 61 | 56, 60 | eqtr 1493 |
. . . . . 6
                 |
| 62 | 61 | opreq1i 3966 |
. . . . 5
                             |
| 63 | 59, 57, 50 | mulass 5308 |
. . . . 5
                                 |
| 64 | 62, 63 | eqtr 1493 |
. . . 4
                             |
| 65 | 4 | resqcl 6568 |
. . . . . . 7
     |
| 66 | 65, 17 | remulcl 5318 |
. . . . . 6
           |
| 67 | | 4re 5939 |
. . . . . . . 8
 |
| 68 | 67, 14 | remulcl 5318 |
. . . . . . 7
   |
| 69 | | reexpclt 6525 |
. . . . . . 7
    
        |
| 70 | 68, 15, 69 | mp2an 696 |
. . . . . 6
       |
| 71 | 58 | nnre 5889 |
. . . . . 6
     |
| 72 | 66, 70, 71 | 3pm3.2i 817 |
. . . . 5
                
      |
| 73 | 58 | nngt0 5908 |
. . . . . . 7
     |
| 74 | 33, 71, 73 | ltlei 5564 |
. . . . . 6
     |
| 75 | | reexpclt 6525 |
. . . . . . . . . 10
  
      |
| 76 | 67, 15, 75 | mp2an 696 |
. . . . . . . . 9
     |
| 77 | 65, 76, 17 | 3pm3.2i 817 |
. . . . . . . 8
        
   
  |
| 78 | | sq2 6583 |
. . . . . . . . . . 11
     |
| 79 | 67 | recn 5297 |
. . . . . . . . . . . 12
 |
| 80 | | exp1t 6518 |
. . . . . . . . . . . 12
       |
| 81 | 79, 80 | ax-mp 7 |
. . . . . . . . . . 11
     |
| 82 | 78, 81 | eqtr4 1496 |
. . . . . . . . . 10
         |
| 83 | | 1nn0 6071 |
. . . . . . . . . . . 12
 |
| 84 | 67, 83, 15 | 3pm3.2i 817 |
. . . . . . . . . . 11

  |
| 85 | | 3re 5938 |
. . . . . . . . . . . . . . 15
 |
| 86 | | 3pos 5948 |
. . . . . . . . . . . . . . 15
 |
| 87 | 33, 85, 86 | ltlei 5564 |
. . . . . . . . . . . . . 14
 |
| 88 | | 1re 5418 |
. . . . . . . . . . . . . . 15
 |
| 89 | | addge02t 5656 |
. . . . . . . . . . . . . . 15
         |
| 90 | 88, 85, 89 | mp2an 696 |
. . . . . . . . . . . . . 14
     |
| 91 | 87, 90 | mpbi 189 |
. . . . . . . . . . . . 13
   |
| 92 | | df-4 5929 |
. . . . . . . . . . . . 13
   |
| 93 | 91, 92 | breqtrr 2636 |
. . . . . . . . . . . 12
 |
| 94 | | nnge1t 5901 |
. . . . . . . . . . . . 13

  |
| 95 | 6, 94 | ax-mp 7 |
. . . . . . . . . . . 12
 |
| 96 | 93, 95 | pm3.2i 285 |
. . . . . . . . . . 11
   |
| 97 | | expwordit 6548 |
. . . . . . . . . . 11
                 |
| 98 | 84, 96, 97 | mp2an 696 |
. . . . . . . . . 10
         |
| 99 | 82, 98 | eqbrtr 2630 |
. . . . . . . . 9
         |
| 100 | 28, 99 | pm3.2i 285 |
. . . . . . . 8
               |
| 101 | | lemul1itOLD 5804 |
. . . . . . . 8
                                                     |
| 102 | 77, 100, 101 | mp2an 696 |
. . . . . . 7
                     |
| 103 | 13 | nncn 5890 |
. . . . . . . 8
 |
| 104 | | mulexpt 6539 |
. . . . . . . 8
  
                  |
| 105 | 79, 103, 15, 104 | mp3an 915 |
. . . . . . 7
       |