Proof of Theorem leopnmid
| Step | Hyp | Ref
| Expression |
| 1 | | hmopre 11484 |
. . . . 5
  HrmOp
      
  |
| 2 | 1 | adantlr 429 |
. . . 4
   HrmOp normop        
   |
| 3 | 1 | recnd 6468 |
. . . . . 6
  HrmOp
      
  |
| 4 | | abscl 8084 |
. . . . . 6
      
            |
| 5 | 3, 4 | syl 12 |
. . . . 5
  HrmOp
        
    |
| 6 | 5 | adantlr 429 |
. . . 4
   HrmOp normop                |
| 7 | | hmopre 11484 |
. . . . . 6
   normop 
HrmOp 
   normop    
   |
| 8 | | idhmop 11543 |
. . . . . . 7
HrmOp |
| 9 | | hmopm 11583 |
. . . . . . 7
  normop  HrmOp
 normop 
HrmOp |
| 10 | 8, 9 | mpan2 760 |
. . . . . 6
 normop   normop 
HrmOp |
| 11 | 7, 10 | sylan 497 |
. . . . 5
  normop      normop 
      |
| 12 | 11 | adantll 428 |
. . . 4
   HrmOp normop       normop 
      |
| 13 | | leabs 8115 |
. . . . . 6
      
     
            |
| 14 | 1, 13 | syl 12 |
. . . . 5
  HrmOp
      
            |
| 15 | 14 | adantlr 429 |
. . . 4
   HrmOp normop        
        
    |
| 16 | | ffvelrn 4787 |
. . . . . . . . 9
     
       |
| 17 | | normcl 10624 |
. . . . . . . . 9
    
          |
| 18 | 16, 17 | syl 12 |
. . . . . . . 8
     
           |
| 19 | | hmopf 11438 |
. . . . . . . 8

HrmOp       |
| 20 | 18, 19 | sylan 497 |
. . . . . . 7
  HrmOp
           |
| 21 | 20 | adantlr 429 |
. . . . . 6
   HrmOp normop              |
| 22 | | normcl 10624 |
. . . . . . 7

      |
| 23 | 22 | adantl 424 |
. . . . . 6
   HrmOp normop          |
| 24 | | remulcl 6457 |
. . . . . 6
                               |
| 25 | 21, 23, 24 | syl11anc 524 |
. . . . 5
   HrmOp normop                    |
| 26 | 16, 19 | sylan 497 |
. . . . . . 7
  HrmOp
    
  |
| 27 | | bcs 10681 |
. . . . . . 7
     

                          |
| 28 | 26, 27 | sylancom 531 |
. . . . . 6
  HrmOp
        
                  |
| 29 | 28 | adantlr 429 |
. . . . 5
   HrmOp normop                              |
| 30 | | remulcl 6457 |
. . . . . . . 8
  normop        normop         |
| 31 | | simpr 350 |
. . . . . . . 8
  HrmOp normop   normop    |
| 32 | 30, 31, 22 | syl2an 503 |
. . . . . . 7
   HrmOp normop     normop         |
| 33 | | normge0 10625 |
. . . . . . . 8

      |
| 34 | 33 | adantl 424 |
. . . . . . 7
   HrmOp normop          |
| 35 | | nmbdoplb 11587 |
. . . . . . . 8
  BndLinOp           normop         |
| 36 | | elbdop2 11435 |
. . . . . . . . . 10

BndLinOp  LinOp normop     |
| 37 | 36 | biimpri 169 |
. . . . . . . . 9
  LinOp normop   BndLinOp |
| 38 | | hmoplin 11503 |
. . . . . . . . 9

HrmOp LinOp |
| 39 | 37, 38 | sylan 497 |
. . . . . . . 8
  HrmOp normop   BndLinOp |
| 40 | 35, 39 | sylan 497 |
. . . . . . 7
   HrmOp normop             normop         |
| 41 | | lemul1aOLD 7020 |
. . . . . . 7
            normop                          normop 
                       normop              |
| 42 | 21, 32, 23, 34, 40, 41 | syl32anc 1108 |
. . . . . 6
   HrmOp normop                    normop              |
| 43 | 22 | recnd 6468 |
. . . . . . . . . . . 12

      |
| 44 | | sqval 7854 |
. . . . . . . . . . . 12
    
            
       |
| 45 | 43, 44 | syl 12 |
. . . . . . . . . . 11

            
       |
| 46 | | normsq 10634 |
. . . . . . . . . . 11

            |
| 47 | 45, 46 | eqtr3d 1927 |
. . . . . . . . . 10

    
         |
| 48 | 47 | opreq2d 4898 |
. . . . . . . . 9

 normop      
       normop 
     |
| 49 | 48 | adantl 424 |
. . . . . . . 8
   HrmOp normop     normop      
       normop 
     |
| 50 | | recn 6466 |
. . . . . . . . . 10
 normop  normop 
  |
| 51 | 50 | ad2antlr 441 |
. . . . . . . . 9
   HrmOp normop    normop    |
| 52 | 23 | recnd 6468 |
. . . . . . . . 9
   HrmOp normop          |
| 53 | | mulass 6461 |
. . . . . . . . 9
  normop             normop             normop 
             |
| 54 | 51, 52, 52, 53 | syl111anc 1100 |
. . . . . . . 8
   HrmOp normop      normop             normop 
             |
| 55 | | simpr 350 |
. . . . . . . . 9
   HrmOp normop      |
| 56 | | ax-his3 10584 |
. . . . . . . . 9
  normop     normop     normop       |
| 57 | 51, 55, 55, 56 | syl111anc 1100 |
. . . . . . . 8
   HrmOp normop      normop     normop       |
| 58 | 49, 54, 57 | 3eqtr4d 1937 |
. . . . . . 7
   HrmOp normop      normop              normop      |
| 59 | | hoif 11317 |
. . . . . . . . . . . 12
    |
| 60 | | f1of 4635 |
. . . . . . . . . . . 12
        |
| 61 | 59, 60 | ax-mp 7 |
. . . . . . . . . . 11
    |
| 62 | 61 | a1i 8 |
. . . . . . . . . 10
   HrmOp normop         |
| 63 | | homval 11151 |
. . . . . . . . . 10
  normop        normop      normop       |
| 64 | 51, 62, 55, 63 | syl111anc 1100 |
. . . . . . . . 9
   HrmOp normop      normop      normop       |
| 65 | | hoival 11318 |
. . . . . . . . . . 11

    |
| 66 | 65 | opreq2d 4898 |
. . . . . . . . . 10

 normop      normop     |
| 67 | 66 | adantl 424 |
. . . . . . . . 9
   HrmOp normop     normop      normop     |
| 68 | 64, 67 | eqtrd 1925 |
. . . . . . . 8
   HrmOp normop      normop      normop     |
| 69 | 68 | opreq1d 4897 |
. . . . . . 7
   HrmOp normop       normop 
      normop      |
| 70 | 58, 69 | eqtr4d 1928 |
. . . . . 6
   HrmOp normop      normop               normop    
   |
| 71 | 42, 70 | breqtrd 3361 |
. . . . 5
   HrmOp normop                     normop 
      |
| 72 | 6, 25, 12, 29, 71 | letrd 6696 |
. . . 4
   HrmOp normop                 normop        |
| 73 | 2, 6, 12, 15, 72 | letrd 6696 |
. . 3
   HrmOp normop        
    normop        |
| 74 | 73 | r19.21aiva 2176 |
. 2
  HrmOp normop   
    
    normop        |
| 75 | | leop2 11695 |
. . 3
  HrmOp  normop  HrmOp   normop  
         normop         |
| 76 | 75, 10 | sylan2 500 |
. 2
  HrmOp normop     normop 
      
   normop    
    |
| 77 | 74, 76 | mpbird 213 |
1
  HrmOp normop    normop    |