| Step | Hyp | Ref
| Expression |
| 1 | | simpr 477 |
. . . 4
 

      |
| 2 | | xkoco2cn.f |
. . . . 5
     |
| 3 | 2 | adantr 481 |
. . . 4
 

      |
| 4 | | cnco 21070 |
. . . 4
   
         |
| 5 | 1, 3, 4 | syl2anc 693 |
. . 3
 

  
     |
| 6 | | eqid 2622 |
. . 3
             |
| 7 | 5, 6 | fmptd 6385 |
. 2
                 |
| 8 | | eqid 2622 |
. . . . . 6
   |
| 9 | | eqid 2622 |
. . . . . 6
    ↾t     
 ↾t    |
| 10 | | eqid 2622 |
. . . . . 6
     ↾t                  ↾t              |
| 11 | 8, 9, 10 | xkobval 21389 |
. . . . 5
     ↾t                 
 
↾t        
    |
| 12 | 11 | abeq2i 2735 |
. . . 4
      ↾t            
   
 
↾t        
    |
| 13 | | simpr 477 |
. . . . . . . . . . . 12
         
↾t          |
| 14 | 2 | ad3antrrr 766 |
. . . . . . . . . . . 12
         
↾t          |
| 15 | 13, 14, 4 | syl2anc 693 |
. . . . . . . . . . 11
         
↾t      
     |
| 16 | | imaeq1 5461 |
. . . . . . . . . . . . . 14
               |
| 17 | | imaco 5640 |
. . . . . . . . . . . . . 14
               |
| 18 | 16, 17 | syl6eq 2672 |
. . . . . . . . . . . . 13
                 |
| 19 | 18 | sseq1d 3632 |
. . . . . . . . . . . 12
       
           |
| 20 | 19 | elrab3 3364 |
. . . . . . . . . . 11
               
           |
| 21 | 15, 20 | syl 17 |
. . . . . . . . . 10
         
↾t                
           |
| 22 | | eqid 2622 |
. . . . . . . . . . . . . . 15
   |
| 23 | | eqid 2622 |
. . . . . . . . . . . . . . 15
   |
| 24 | 22, 23 | cnf 21050 |
. . . . . . . . . . . . . 14
           |
| 25 | 2, 24 | syl 17 |
. . . . . . . . . . . . 13
         |
| 26 | 25 | ad3antrrr 766 |
. . . . . . . . . . . 12
         
↾t              |
| 27 | | ffun 6048 |
. . . . . . . . . . . 12
         |
| 28 | 26, 27 | syl 17 |
. . . . . . . . . . 11
         
↾t        |
| 29 | | imassrn 5477 |
. . . . . . . . . . . . 13
     |
| 30 | 8, 22 | cnf 21050 |
. . . . . . . . . . . . . . 15
           |
| 31 | 13, 30 | syl 17 |
. . . . . . . . . . . . . 14
         
↾t              |
| 32 | | frn 6053 |
. . . . . . . . . . . . . 14
          |
| 33 | 31, 32 | syl 17 |
. . . . . . . . . . . . 13
         
↾t         |
| 34 | 29, 33 | syl5ss 3614 |
. . . . . . . . . . . 12
         
↾t             |
| 35 | | fdm 6051 |
. . . . . . . . . . . . 13
          |
| 36 | 26, 35 | syl 17 |
. . . . . . . . . . . 12
         
↾t         |
| 37 | 34, 36 | sseqtr4d 3642 |
. . . . . . . . . . 11
         
↾t         
  |
| 38 | | funimass3 6333 |
. . . . . . . . . . 11
     
                      |
| 39 | 28, 37, 38 | syl2anc 693 |
. . . . . . . . . 10
         
↾t              
            |
| 40 | 21, 39 | bitrd 268 |
. . . . . . . . 9
         
↾t                
            |
| 41 | 40 | rabbidva 3188 |
. . . . . . . 8
         ↾t                
      
        |
| 42 | | xkoco2cn.r |
. . . . . . . . . 10
   |
| 43 | 42 | ad2antrr 762 |
. . . . . . . . 9
         ↾t     |
| 44 | | cntop1 21044 |
. . . . . . . . . . 11
     |
| 45 | 2, 44 | syl 17 |
. . . . . . . . . 10
   |
| 46 | 45 | ad2antrr 762 |
. . . . . . . . 9
         ↾t     |
| 47 | | simplrl 800 |
. . . . . . . . . 10
         ↾t       |
| 48 | 47 | elpwid 4170 |
. . . . . . . . 9
         ↾t      |
| 49 | | simpr 477 |
. . . . . . . . 9
         ↾t    ↾t    |
| 50 | 2 | ad2antrr 762 |
. . . . . . . . . 10
         ↾t       |
| 51 | | simplrr 801 |
. . . . . . . . . 10
         ↾t     |
| 52 | | cnima 21069 |
. . . . . . . . . 10
   
        |
| 53 | 50, 51, 52 | syl2anc 693 |
. . . . . . . . 9
         ↾t          |
| 54 | 8, 43, 46, 48, 49, 53 | xkoopn 21392 |
. . . . . . . 8
         ↾t                      |
| 55 | 41, 54 | eqeltrd 2701 |
. . . . . . 7
         ↾t                
      |
| 56 | | imaeq2 5462 |
. . . . . . . . 9
        
                           
    |
| 57 | 6 | mptpreima 5628 |
. . . . . . . . 9
                
                 |
| 58 | 56, 57 | syl6eq 2672 |
. . . . . . . 8
        
                           |
| 59 | 58 | eleq1d 2686 |
. . . . . . 7
        
               
             
       |
| 60 | 55, 59 | syl5ibrcom 237 |
. . . . . 6
         ↾t                              |
| 61 | 60 | expimpd 629 |
. . . . 5
 
  
 
  
↾t        
 
                  |
| 62 | 61 | rexlimdvva 3038 |
. . . 4
     
  ↾t                             |
| 63 | 12, 62 | syl5bi 232 |
. . 3
     
 ↾t          
 
                  |
| 64 | 63 | ralrimiv 2965 |
. 2
     
 ↾t          
                    |
| 65 | | eqid 2622 |
. . . . 5
         |
| 66 | 65 | xkotopon 21403 |
. . . 4
 
     TopOn      |
| 67 | 42, 45, 66 | syl2anc 693 |
. . 3
     TopOn      |
| 68 | | ovex 6678 |
. . . . . 6
   |
| 69 | 68 | pwex 4848 |
. . . . 5
    |
| 70 | 8, 9, 10 | xkotf 21388 |
. . . . . 6
     ↾t                    ↾t          |
| 71 | | frn 6053 |
. . . . . 6
      ↾t                    ↾t            
 ↾t          
 
     |
| 72 | 70, 71 | ax-mp 5 |
. . . . 5
     ↾t              
  |
| 73 | 69, 72 | ssexi 4803 |
. . . 4
     ↾t              |
| 74 | 73 | a1i 11 |
. . 3
      ↾t          
    |
| 75 | | cntop2 21045 |
. . . . 5
     |
| 76 | 2, 75 | syl 17 |
. . . 4
   |
| 77 | 8, 9, 10 | xkoval 21390 |
. . . 4
 
              
 ↾t          
      |
| 78 | 42, 76, 77 | syl2anc 693 |
. . 3
              
 ↾t          
      |
| 79 | | eqid 2622 |
. . . . 5
         |
| 80 | 79 | xkotopon 21403 |
. . . 4
 
     TopOn      |
| 81 | 42, 76, 80 | syl2anc 693 |
. . 3
     TopOn      |
| 82 | 67, 74, 78, 81 | subbascn 21058 |
. 2
                                       ↾t                                 |
| 83 | 7, 64, 82 | mpbir2and 957 |
1
                   |