Proof of Theorem tpgprop2
| Step | Hyp | Ref
| Expression |
| 1 | | trhom.3 |
. . . . 5
     |
| 2 | 1 | topgrpgrp 14976 |
. . . 4

TopGrp Grp |
| 3 | 2 | 3ad2ant1 897 |
. . 3
  TopGrp


Grp |
| 4 | | grprndm 9334 |
. . . . . . . 8
 Grp
  |
| 5 | | trhom.1 |
. . . . . . . 8
 |
| 6 | 4, 5 | syl5req 1941 |
. . . . . . 7
 Grp
  |
| 7 | 2, 6 | syl 12 |
. . . . . 6

TopGrp   |
| 8 | 7 | adantr 425 |
. . . . 5
  TopGrp
   |
| 9 | | pweq 3036 |
. . . . . . 7
     |
| 10 | 9 | eleq2d 1964 |
. . . . . 6
  
    |
| 11 | | trhom.4 |
. . . . . . . . . 10
     |
| 12 | 1, 11 | topgrpbs 14974 |
. . . . . . . . 9

TopGrp    |
| 13 | | eqtr 1904 |
. . . . . . . . . . 11
       |
| 14 | | pweq 3036 |
. . . . . . . . . . . . 13
       |
| 15 | 14 | sseq2d 2645 |
. . . . . . . . . . . 12
         |
| 16 | 11 | topgrptop 14977 |
. . . . . . . . . . . . 13

TopGrp Top |
| 17 | | eqid 1884 |
. . . . . . . . . . . . . 14
   |
| 18 | 17 | topge 14911 |
. . . . . . . . . . . . 13
 Top
    |
| 19 | 16, 18 | syl 12 |
. . . . . . . . . . . 12

TopGrp     |
| 20 | 15, 19 | syl5bir 227 |
. . . . . . . . . . 11
   TopGrp     |
| 21 | 13, 20 | syl 12 |
. . . . . . . . . 10
     TopGrp     |
| 22 | 5, 21 | mpan 759 |
. . . . . . . . 9


 TopGrp     |
| 23 | 12, 22 | mpcom 60 |
. . . . . . . 8

TopGrp    |
| 24 | 23 | sseld 2619 |
. . . . . . 7

TopGrp      |
| 25 | 24 | imp 377 |
. . . . . 6
  TopGrp

   |
| 26 | 10, 25 | syl5bir 227 |
. . . . 5
   TopGrp
     |
| 27 | 8, 26 | mpcom 60 |
. . . 4
  TopGrp

   |
| 28 | 27 | 3adant2 895 |
. . 3
  TopGrp



  |
| 29 | 2, 4 | syl 12 |
. . . . . . . 8

TopGrp
  |
| 30 | 29, 5 | syl5eq 1940 |
. . . . . . 7

TopGrp   |
| 31 | | pweq 3036 |
. . . . . . 7

    |
| 32 | 30, 31 | syl 12 |
. . . . . 6

TopGrp     |
| 33 | 32 | eleq2d 1964 |
. . . . 5

TopGrp       |
| 34 | 33 | biimpa 460 |
. . . 4
  TopGrp
 

  |
| 35 | 34 | 3adant3 896 |
. . 3
  TopGrp



  |
| 36 | | eqid 1884 |
. . . 4
 |
| 37 | | tpgprop2.1 |
. . . 4
.t cset   |
| 38 | 36, 37 | iscst4 14522 |
. . 3
  Grp

 
 .t
   .t      |
| 39 | 3, 28, 35, 38 | syl111anc 1100 |
. 2
  TopGrp


 .t
   .t      |
| 40 | 16 | 3ad2ant1 897 |
. . 3
  TopGrp


Top |
| 41 | | simpl1 879 |
. . . . 5
   TopGrp

  TopGrp |
| 42 | | elelpwi 3040 |
. . . . . . . 8
      |
| 43 | 42 | expcom 403 |
. . . . . . 7

     |
| 44 | 43 | 3ad2ant2 898 |
. . . . . 6
  TopGrp


    |
| 45 | 44 | imp 377 |
. . . . 5
   TopGrp

    |
| 46 | | simpl3 881 |
. . . . 5
   TopGrp

    |
| 47 | | eqid 1884 |
. . . . . 6

            |
| 48 | 5, 47, 1, 11, 37 | tpgprop1 14986 |
. . . . 5
  TopGrp
  .t      |
| 49 | 41, 45, 46, 48 | syl111anc 1100 |
. . . 4
   TopGrp

   .t      |
| 50 | 49 | r19.21aiva 2176 |
. . 3
  TopGrp



 .t
     |
| 51 | | iunopn 8868 |
. . 3
  Top   .t     
 .t      |
| 52 | 40, 50, 51 | syl11anc 524 |
. 2
  TopGrp



 .t
     |
| 53 | 39, 52 | eqeltrd 1971 |
1
  TopGrp


 .t
   |