| Step | Hyp | Ref
| Expression |
| 1 | | nsgsubg 17626 |
. . 3
 NrmSGrp 
SubGrp    |
| 2 | | subgntr.h |
. . . 4
     |
| 3 | 2 | clssubg 21912 |
. . 3
  SubGrp  
        SubGrp    |
| 4 | 1, 3 | sylan2 491 |
. 2
  NrmSGrp  
        SubGrp    |
| 5 | | df-ima 5127 |
. . . . . . 7
                                                      
          |
| 6 | | eqid 2622 |
. . . . . . . . . . . . . 14
         |
| 7 | 2, 6 | tgptopon 21886 |
. . . . . . . . . . . . 13
 TopOn        |
| 8 | 7 | ad2antrr 762 |
. . . . . . . . . . . 12
   NrmSGrp        TopOn        |
| 9 | | topontop 20718 |
. . . . . . . . . . . 12
 TopOn        |
| 10 | 8, 9 | syl 17 |
. . . . . . . . . . 11
   NrmSGrp          |
| 11 | 1 | ad2antlr 763 |
. . . . . . . . . . . . 13
   NrmSGrp        SubGrp    |
| 12 | 6 | subgss 17595 |
. . . . . . . . . . . . 13
 SubGrp 
      |
| 13 | 11, 12 | syl 17 |
. . . . . . . . . . . 12
   NrmSGrp              |
| 14 | | toponuni 20719 |
. . . . . . . . . . . . 13
 TopOn             |
| 15 | 8, 14 | syl 17 |
. . . . . . . . . . . 12
   NrmSGrp               |
| 16 | 13, 15 | sseqtrd 3641 |
. . . . . . . . . . 11
   NrmSGrp           |
| 17 | | eqid 2622 |
. . . . . . . . . . . 12
   |
| 18 | 17 | clsss3 20863 |
. . . . . . . . . . 11
           
   |
| 19 | 10, 16, 18 | syl2anc 693 |
. . . . . . . . . 10
   NrmSGrp                   |
| 20 | 19, 15 | sseqtr4d 3642 |
. . . . . . . . 9
   NrmSGrp                      |
| 21 | 20 | resmptd 5452 |
. . . . . . . 8
   NrmSGrp                             
                                    |
| 22 | 21 | rneqd 5353 |
. . . . . . 7
   NrmSGrp                                                                  |
| 23 | 5, 22 | syl5eq 2668 |
. . . . . 6
   NrmSGrp                                                                    |
| 24 | | eqid 2622 |
. . . . . . . . . 10
       |
| 25 | | tgptmd 21883 |
. . . . . . . . . . 11
 TopMnd |
| 26 | 25 | ad2antrr 762 |
. . . . . . . . . 10
   NrmSGrp        TopMnd |
| 27 | | simpr 477 |
. . . . . . . . . . 11
   NrmSGrp              |
| 28 | 8, 8, 27 | cnmptc 21465 |
. . . . . . . . . 10
   NrmSGrp                  |
| 29 | 8 | cnmptid 21464 |
. . . . . . . . . 10
   NrmSGrp                  |
| 30 | 2, 24, 26, 8, 28, 29 | cnmpt1plusg 21891 |
. . . . . . . . 9
   NrmSGrp                         |
| 31 | | eqid 2622 |
. . . . . . . . . . 11
         |
| 32 | 2, 31 | tgpsubcn 21894 |
. . . . . . . . . 10
           |
| 33 | 32 | ad2antrr 762 |
. . . . . . . . 9
   NrmSGrp                  |
| 34 | 8, 30, 28, 33 | cnmpt12f 21469 |
. . . . . . . 8
   NrmSGrp                                 |
| 35 | 17 | cnclsi 21076 |
. . . . . . . 8
                                                           
                                   |
| 36 | 34, 16, 35 | syl2anc 693 |
. . . . . . 7
   NrmSGrp                                                                            |
| 37 | | df-ima 5127 |
. . . . . . . . . 10
                                                 |
| 38 | 13 | resmptd 5452 |
. . . . . . . . . . 11
   NrmSGrp                             
                    |
| 39 | 38 | rneqd 5353 |
. . . . . . . . . 10
   NrmSGrp                                                  |
| 40 | 37, 39 | syl5eq 2668 |
. . . . . . . . 9
   NrmSGrp                                                    |
| 41 | 6, 24, 31 | nsgconj 17627 |
. . . . . . . . . . . . 13
  NrmSGrp 
   

                 |
| 42 | 41 | 3expa 1265 |
. . . . . . . . . . . 12
   NrmSGrp                         |
| 43 | 42 | adantlll 754 |
. . . . . . . . . . 11
    NrmSGrp  
    
                  |
| 44 | | eqid 2622 |
. . . . . . . . . . 11
                                   |
| 45 | 43, 44 | fmptd 6385 |
. . . . . . . . . 10
   NrmSGrp                               |
| 46 | | frn 6053 |
. . . . . . . . . 10
                                      
  |
| 47 | 45, 46 | syl 17 |
. . . . . . . . 9
   NrmSGrp                        
  |
| 48 | 40, 47 | eqsstrd 3639 |
. . . . . . . 8
   NrmSGrp                                   |
| 49 | 17 | clsss 20858 |
. . . . . . . 8
                            
                                           |
| 50 | 10, 16, 48, 49 | syl3anc 1326 |
. . . . . . 7
   NrmSGrp                                                   |
| 51 | 36, 50 | sstrd 3613 |
. . . . . 6
   NrmSGrp                                                   |
| 52 | 23, 51 | eqsstr3d 3640 |
. . . . 5
   NrmSGrp                                
          |
| 53 | | ovex 6678 |
. . . . . . 7
                |
| 54 | | eqid 2622 |
. . . . . . 7
                                                   |
| 55 | 53, 54 | fnmpti 6022 |
. . . . . 6
                                  |
| 56 | | df-f 5892 |
. . . . . 6
                                                                                                        
           |
| 57 | 55, 56 | mpbiran 953 |
. . . . 5
                                                                      
          |
| 58 | 52, 57 | sylibr 224 |
. . . 4
   NrmSGrp                                                       |
| 59 | 54 | fmpt 6381 |
. . . 4
 
                                                                               |
| 60 | 58, 59 | sylibr 224 |
. . 3
   NrmSGrp                                           |
| 61 | 60 | ralrimiva 2966 |
. 2
  NrmSGrp  
                                         |
| 62 | 6, 24, 31 | isnsg3 17628 |
. 2
         NrmSGrp           SubGrp        
                                   |
| 63 | 4, 61, 62 | sylanbrc 698 |
1
  NrmSGrp  
        NrmSGrp    |