| Step | Hyp | Ref
| Expression |
| 1 | | relcmpcmet.2 |
. 2
       |
| 2 | | metxmet 22139 |
. . . . . . 7
    
       |
| 3 | 1, 2 | syl 17 |
. . . . . 6
        |
| 4 | 3 | adantr 481 |
. . . . 5
 
CauFil          |
| 5 | | simpr 477 |
. . . . 5
 
CauFil   CauFil    |
| 6 | | relcmpcmet.3 |
. . . . . 6
   |
| 7 | 6 | adantr 481 |
. . . . 5
 
CauFil     |
| 8 | | cfil3i 23067 |
. . . . 5
       CauFil   
          |
| 9 | 4, 5, 7, 8 | syl3anc 1326 |
. . . 4
 
CauFil              |
| 10 | 3 | ad2antrr 762 |
. . . . . . . 8
   CauFil  

         
       |
| 11 | | relcmpcmet.1 |
. . . . . . . . 9
     |
| 12 | 11 | mopntopon 22244 |
. . . . . . . 8
      TopOn    |
| 13 | 10, 12 | syl 17 |
. . . . . . 7
   CauFil  

         
TopOn    |
| 14 | | cfilfil 23065 |
. . . . . . . . 9
       CauFil         |
| 15 | 3, 14 | sylan 488 |
. . . . . . . 8
 
CauFil         |
| 16 | 15 | adantr 481 |
. . . . . . 7
   CauFil  

                |
| 17 | | simprr 796 |
. . . . . . . 8
   CauFil  

                    |
| 18 | | topontop 20718 |
. . . . . . . . . . 11
 TopOn 
  |
| 19 | 13, 18 | syl 17 |
. . . . . . . . . 10
   CauFil  

         
  |
| 20 | | simprl 794 |
. . . . . . . . . . . 12
   CauFil  

         
  |
| 21 | 6 | rpxrd 11873 |
. . . . . . . . . . . . 13
   |
| 22 | 21 | ad2antrr 762 |
. . . . . . . . . . . 12
   CauFil  

         
  |
| 23 | | blssm 22223 |
. . . . . . . . . . . 12
      
           |
| 24 | 10, 20, 22, 23 | syl3anc 1326 |
. . . . . . . . . . 11
   CauFil  

                    |
| 25 | | toponuni 20719 |
. . . . . . . . . . . 12
 TopOn 
   |
| 26 | 13, 25 | syl 17 |
. . . . . . . . . . 11
   CauFil  

         
   |
| 27 | 24, 26 | sseqtrd 3641 |
. . . . . . . . . 10
   CauFil  

                     |
| 28 | | eqid 2622 |
. . . . . . . . . . 11
   |
| 29 | 28 | clsss3 20863 |
. . . . . . . . . 10
                               |
| 30 | 19, 27, 29 | syl2anc 693 |
. . . . . . . . 9
   CauFil  

                             |
| 31 | 30, 26 | sseqtr4d 3642 |
. . . . . . . 8
   CauFil  

                            |
| 32 | 28 | sscls 20860 |
. . . . . . . . 9
                                      |
| 33 | 19, 27, 32 | syl2anc 693 |
. . . . . . . 8
   CauFil  

                                    |
| 34 | | filss 21657 |
. . . . . . . 8
                                                        
                  |
| 35 | 16, 17, 31, 33, 34 | syl13anc 1328 |
. . . . . . 7
   CauFil  

                            |
| 36 | | fclsrest 21828 |
. . . . . . 7
  TopOn     
                   ↾t                  
↾t                                         |
| 37 | 13, 16, 35, 36 | syl3anc 1326 |
. . . . . 6
   CauFil  

            ↾t                  
↾t                                         |
| 38 | | inss1 3833 |
. . . . . . 7
 
                     |
| 39 | | eqid 2622 |
. . . . . . . . 9
 |
| 40 | 11, 39 | cfilfcls 23072 |
. . . . . . . 8
 CauFil 
  
   |
| 41 | 40 | ad2antlr 763 |
. . . . . . 7
   CauFil  

                |
| 42 | 38, 41 | syl5sseq 3653 |
. . . . . 6
   CauFil  

                                  |
| 43 | 37, 42 | eqsstrd 3639 |
. . . . 5
   CauFil  

            ↾t                  
↾t                       |
| 44 | | relcmpcmet.4 |
. . . . . . 7
 
  ↾t                    |
| 45 | 44 | ad2ant2r 783 |
. . . . . 6
   CauFil  

          
↾t                    |
| 46 | | filfbas 21652 |
. . . . . . . . . 10
    
      |
| 47 | 16, 46 | syl 17 |
. . . . . . . . 9
   CauFil  

                |
| 48 | | fbncp 21643 |
. . . . . . . . 9
                       
                   |
| 49 | 47, 35, 48 | syl2anc 693 |
. . . . . . . 8
   CauFil  

                              |
| 50 | | trfil3 21692 |
. . . . . . . . 9
                        
↾t                                                           |
| 51 | 16, 31, 50 | syl2anc 693 |
. . . . . . . 8
   CauFil  

            ↾t                                                           |
| 52 | 49, 51 | mpbird 247 |
. . . . . . 7
   CauFil  

          
↾t                                        |
| 53 | | resttopon 20965 |
. . . . . . . . . 10
  TopOn                    ↾t                  TopOn                    |
| 54 | 13, 31, 53 | syl2anc 693 |
. . . . . . . . 9
   CauFil  

          
↾t                  TopOn                    |
| 55 | | toponuni 20719 |
. . . . . . . . 9
  ↾t                  TopOn                                    ↾t                    |
| 56 | 54, 55 | syl 17 |
. . . . . . . 8
   CauFil  

                            ↾t                    |
| 57 | 56 | fveq2d 6195 |
. . . . . . 7
   CauFil  

                                  
↾t                     |
| 58 | 52, 57 | eleqtrd 2703 |
. . . . . 6
   CauFil  

          
↾t                       ↾t                     |
| 59 | | eqid 2622 |
. . . . . . 7
  ↾t                    ↾t                   |
| 60 | 59 | fclscmpi 21833 |
. . . . . 6
  
↾t                   ↾t                      
↾t                      ↾t                  
↾t                     |
| 61 | 45, 58, 60 | syl2anc 693 |
. . . . 5
   CauFil  

            ↾t                  
↾t                     |
| 62 | | ssn0 3976 |
. . . . 5
    ↾t                  
↾t                       ↾t                  
↾t                        |
| 63 | 43, 61, 62 | syl2anc 693 |
. . . 4
   CauFil  

              |
| 64 | 9, 63 | rexlimddv 3035 |
. . 3
 
CauFil       |
| 65 | 64 | ralrimiva 2966 |
. 2
  CauFil       |
| 66 | 11 | iscmet 23082 |
. 2
         
 CauFil        |
| 67 | 1, 65, 66 | sylanbrc 698 |
1
       |