| Step | Hyp | Ref
| Expression |
| 1 | | cnf2 21053 |
. . . 4
  TopOn  TopOn 
         |
| 2 | 1 | 3expa 1265 |
. . 3
   TopOn  TopOn  

        |
| 3 | | cnclima 21072 |
. . . . 5
   
                |
| 4 | 3 | ralrimiva 2966 |
. . . 4
                    |
| 5 | 4 | adantl 482 |
. . 3
   TopOn  TopOn  

                   |
| 6 | 2, 5 | jca 554 |
. 2
   TopOn  TopOn  

                         |
| 7 | | simprl 794 |
. . 3
   TopOn  TopOn  
     
                      |
| 8 | | toponuni 20719 |
. . . . . . . . . 10
 TopOn 
   |
| 9 | 8 | ad3antrrr 766 |
. . . . . . . . 9
    TopOn 
TopOn                        
    |
| 10 | | simplrl 800 |
. . . . . . . . . 10
    TopOn 
TopOn                        
       |
| 11 | | fimacnv 6347 |
. . . . . . . . . . 11
            |
| 12 | 11 | eqcomd 2628 |
. . . . . . . . . 10
    
       |
| 13 | 10, 12 | syl 17 |
. . . . . . . . 9
    TopOn 
TopOn                        
        |
| 14 | 9, 13 | eqtr3d 2658 |
. . . . . . . 8
    TopOn 
TopOn                        
         |
| 15 | 14 | difeq1d 3727 |
. . . . . . 7
    TopOn 
TopOn                        
                       |
| 16 | | ffun 6048 |
. . . . . . . 8
       |
| 17 | | funcnvcnv 5956 |
. . . . . . . 8

    |
| 18 | | imadif 5973 |
. . . . . . . 8
  
                     |
| 19 | 10, 16, 17, 18 | 4syl 19 |
. . . . . . 7
    TopOn 
TopOn                        
                      |
| 20 | 15, 19 | eqtr4d 2659 |
. . . . . 6
    TopOn 
TopOn                        
                  |
| 21 | | toponuni 20719 |
. . . . . . . . . 10
 TopOn 
   |
| 22 | 21 | ad3antlr 767 |
. . . . . . . . 9
    TopOn 
TopOn                        
    |
| 23 | 22 | difeq1d 3727 |
. . . . . . . 8
    TopOn 
TopOn                        
        |
| 24 | | topontop 20718 |
. . . . . . . . . 10
 TopOn 
  |
| 25 | 24 | ad3antlr 767 |
. . . . . . . . 9
    TopOn 
TopOn                        
   |
| 26 | | eqid 2622 |
. . . . . . . . . 10
   |
| 27 | 26 | opncld 20837 |
. . . . . . . . 9
 
          |
| 28 | 25, 27 | sylancom 701 |
. . . . . . . 8
    TopOn 
TopOn                        
          |
| 29 | 23, 28 | eqeltrd 2701 |
. . . . . . 7
    TopOn 
TopOn                        
         |
| 30 | | simplrr 801 |
. . . . . . 7
    TopOn 
TopOn                        
                  |
| 31 | | imaeq2 5462 |
. . . . . . . . 9
                 |
| 32 | 31 | eleq1d 2686 |
. . . . . . . 8
                           |
| 33 | 32 | rspcv 3305 |
. . . . . . 7
      
 
             
              |
| 34 | 29, 30, 33 | sylc 65 |
. . . . . 6
    TopOn 
TopOn                        
              |
| 35 | 20, 34 | eqeltrd 2701 |
. . . . 5
    TopOn 
TopOn                        
               |
| 36 | | topontop 20718 |
. . . . . . 7
 TopOn 
  |
| 37 | 36 | ad3antrrr 766 |
. . . . . 6
    TopOn 
TopOn                        
   |
| 38 | | cnvimass 5485 |
. . . . . . . 8
    
 |
| 39 | | fdm 6051 |
. . . . . . . . 9
       |
| 40 | 10, 39 | syl 17 |
. . . . . . . 8
    TopOn 
TopOn                        
   |
| 41 | 38, 40 | syl5sseq 3653 |
. . . . . . 7
    TopOn 
TopOn                        
        |
| 42 | 41, 9 | sseqtrd 3641 |
. . . . . 6
    TopOn 
TopOn                        
         |
| 43 | | eqid 2622 |
. . . . . . 7
   |
| 44 | 43 | isopn2 20836 |
. . . . . 6
                              |
| 45 | 37, 42, 44 | syl2anc 693 |
. . . . 5
    TopOn 
TopOn                        
                      |
| 46 | 35, 45 | mpbird 247 |
. . . 4
    TopOn 
TopOn                        
        |
| 47 | 46 | ralrimiva 2966 |
. . 3
   TopOn  TopOn  
     
                
       |
| 48 | | iscn 21039 |
. . . 4
  TopOn  TopOn  
        
         |
| 49 | 48 | adantr 481 |
. . 3
   TopOn  TopOn  
     
                                  |
| 50 | 7, 47, 49 | mpbir2and 957 |
. 2
   TopOn  TopOn  
     
               
    |
| 51 | 6, 50 | impbida 877 |
1
  TopOn  TopOn  
                           |