| Step | Hyp | Ref
| Expression |
| 1 | | elflim 21775 |
. 2
  TopOn       
 

              |
| 2 | | dfss3 3592 |
. . . 4
                         |
| 3 | | topontop 20718 |
. . . . . . . . . . 11
 TopOn 
  |
| 4 | 3 | ad2antrr 762 |
. . . . . . . . . 10
   TopOn          |
| 5 | | opnneip 20923 |
. . . . . . . . . . 11
 
             |
| 6 | 5 | 3expb 1266 |
. . . . . . . . . 10
  
              |
| 7 | 4, 6 | sylan 488 |
. . . . . . . . 9
    TopOn 
     

 
            |
| 8 | | eleq1 2689 |
. . . . . . . . . 10
 
   |
| 9 | 8 | rspcv 3305 |
. . . . . . . . 9
            
          
   |
| 10 | 7, 9 | syl 17 |
. . . . . . . 8
    TopOn 
     

              
   |
| 11 | 10 | expr 643 |
. . . . . . 7
    TopOn 
     
 
            
    |
| 12 | 11 | com23 86 |
. . . . . 6
    TopOn 
     
  
          

    |
| 13 | 12 | ralrimdva 2969 |
. . . . 5
   TopOn         
          


    |
| 14 | | simpr 477 |
. . . . . . . . . 10
    TopOn 
     
                       |
| 15 | 3 | ad3antrrr 766 |
. . . . . . . . . . 11
    TopOn 
     
          
  |
| 16 | | simplr 792 |
. . . . . . . . . . . . 13
    TopOn 
     
          
  |
| 17 | | toponuni 20719 |
. . . . . . . . . . . . . 14
 TopOn 
   |
| 18 | 17 | ad3antrrr 766 |
. . . . . . . . . . . . 13
    TopOn 
     
          
   |
| 19 | 16, 18 | eleqtrd 2703 |
. . . . . . . . . . . 12
    TopOn 
     
          
   |
| 20 | 19 | snssd 4340 |
. . . . . . . . . . 11
    TopOn 
     
                |
| 21 | | eqid 2622 |
. . . . . . . . . . . . 13
   |
| 22 | 21 | neii1 20910 |
. . . . . . . . . . . 12
 
              |
| 23 | 4, 22 | sylan 488 |
. . . . . . . . . . 11
    TopOn 
     
          
   |
| 24 | 21 | neiint 20908 |
. . . . . . . . . . 11
    
 
          
             |
| 25 | 15, 20, 23, 24 | syl3anc 1326 |
. . . . . . . . . 10
    TopOn 
     
                     
             |
| 26 | 14, 25 | mpbid 222 |
. . . . . . . . 9
    TopOn 
     
                       |
| 27 | | snssg 4327 |
. . . . . . . . . 10
 
       
             |
| 28 | 27 | ad2antlr 763 |
. . . . . . . . 9
    TopOn 
     
                                 |
| 29 | 26, 28 | mpbird 247 |
. . . . . . . 8
    TopOn 
     
          
          |
| 30 | 21 | ntropn 20853 |
. . . . . . . . . 10
              |
| 31 | 15, 23, 30 | syl2anc 693 |
. . . . . . . . 9
    TopOn 
     
                     |
| 32 | | eleq2 2690 |
. . . . . . . . . . 11
        

           |
| 33 | | eleq1 2689 |
. . . . . . . . . . 11
        

           |
| 34 | 32, 33 | imbi12d 334 |
. . . . . . . . . 10
        
 

                     |
| 35 | 34 | rspcv 3305 |
. . . . . . . . 9
        
 

                      |
| 36 | 31, 35 | syl 17 |
. . . . . . . 8
    TopOn 
     
             
 
                    |
| 37 | 29, 36 | mpid 44 |
. . . . . . 7
    TopOn 
     
             
            |
| 38 | | simpllr 799 |
. . . . . . . 8
    TopOn 
     
          
      |
| 39 | 21 | ntrss2 20861 |
. . . . . . . . 9
           
  |
| 40 | 15, 23, 39 | syl2anc 693 |
. . . . . . . 8
    TopOn 
     
                     |
| 41 | 23, 18 | sseqtr4d 3642 |
. . . . . . . 8
    TopOn 
     
          
  |
| 42 | | filss 21657 |
. . . . . . . . . 10
              
            |
| 43 | 42 | 3exp2 1285 |
. . . . . . . . 9
    
        
         
     |
| 44 | 43 | com24 95 |
. . . . . . . 8
    
        

        
     |
| 45 | 38, 40, 41, 44 | syl3c 66 |
. . . . . . 7
    TopOn 
     
                       |
| 46 | 37, 45 | syld 47 |
. . . . . 6
    TopOn 
     
             
    |
| 47 | 46 | ralrimdva 2969 |
. . . . 5
   TopOn         

                |
| 48 | 13, 47 | impbid 202 |
. . . 4
   TopOn         
            
    |
| 49 | 2, 48 | syl5bb 272 |
. . 3
   TopOn                    
    |
| 50 | 49 | pm5.32da 673 |
. 2
  TopOn                     

     |
| 51 | 1, 50 | bitrd 268 |
1
  TopOn       
 



     |