| Step | Hyp | Ref
| Expression |
| 1 | | simpll 527 |
. . . 4
   TopOn   
        TopOn    |
| 2 | | toptopon2 14339 |
. . . . . 6

TopOn     |
| 3 | 2 | biimpi 120 |
. . . . 5
 TopOn     |
| 4 | 3 | ad2antlr 489 |
. . . 4
   TopOn   
        TopOn     |
| 5 | | simpr3 1007 |
. . . 4
   TopOn   
                |
| 6 | | cnpf2 14527 |
. . . 4
  TopOn  TopOn         
       |
| 7 | 1, 4, 5, 6 | syl3anc 1249 |
. . 3
   TopOn   
               |
| 8 | | simpr1 1005 |
. . 3
   TopOn   
          |
| 9 | 7, 8 | fssresd 5437 |
. 2
   TopOn   
                 |
| 10 | | simplr2 1042 |
. . . . . 6
    TopOn 
 
           |
| 11 | | fvres 5585 |
. . . . . 6
             |
| 12 | 10, 11 | syl 14 |
. . . . 5
    TopOn 
 
                     |
| 13 | 12 | eleq1d 2265 |
. . . 4
    TopOn 
 
               
       |
| 14 | 1 | ad2antrr 488 |
. . . . . . 7
     TopOn 


              TopOn    |
| 15 | 4 | ad2antrr 488 |
. . . . . . 7
     TopOn 


              TopOn     |
| 16 | 8 | ad2antrr 488 |
. . . . . . . 8
     TopOn 


                |
| 17 | | simpr2 1006 |
. . . . . . . . 9
   TopOn   
          |
| 18 | 17 | ad2antrr 488 |
. . . . . . . 8
     TopOn 


                |
| 19 | 16, 18 | sseldd 3185 |
. . . . . . 7
     TopOn 


                |
| 20 | 5 | ad2antrr 488 |
. . . . . . 7
     TopOn 


                      |
| 21 | | simplr 528 |
. . . . . . 7
     TopOn 


                |
| 22 | | simpr 110 |
. . . . . . 7
     TopOn 


                    |
| 23 | | icnpimaex 14531 |
. . . . . . 7
   TopOn  TopOn   
            


       |
| 24 | 14, 15, 19, 20, 21, 22, 23 | syl33anc 1264 |
. . . . . 6
     TopOn 


              

       |
| 25 | 24 | ex 115 |
. . . . 5
    TopOn 
 
              

   
    |
| 26 | | idd 21 |
. . . . . . . . . . 11
   TopOn   
        
   |
| 27 | 26, 17 | jctird 317 |
. . . . . . . . . 10
   TopOn   
        

    |
| 28 | | elin 3347 |
. . . . . . . . . 10
  

   |
| 29 | 27, 28 | imbitrrdi 162 |
. . . . . . . . 9
   TopOn   
        
     |
| 30 | | inss1 3384 |
. . . . . . . . . . . 12
   |
| 31 | | imass2 5046 |
. . . . . . . . . . . 12
               |
| 32 | 30, 31 | ax-mp 5 |
. . . . . . . . . . 11
           |
| 33 | | id 19 |
. . . . . . . . . . 11
           |
| 34 | 32, 33 | sstrid 3195 |
. . . . . . . . . 10
             |
| 35 | 34 | a1i 9 |
. . . . . . . . 9
   TopOn   
            
         |
| 36 | 29, 35 | anim12d 335 |
. . . . . . . 8
   TopOn   
             
              |
| 37 | 36 | reximdv 2598 |
. . . . . . 7
   TopOn   
         

   
  

    
 
    |
| 38 | | vex 2766 |
. . . . . . . . . 10
 |
| 39 | 38 | inex1 4168 |
. . . . . . . . 9
   |
| 40 | 39 | a1i 9 |
. . . . . . . 8
    TopOn 
 
         
   |
| 41 | | topontop 14334 |
. . . . . . . . . 10
 TopOn 
  |
| 42 | 41 | ad2antrr 488 |
. . . . . . . . 9
   TopOn   
          |
| 43 | | uniexg 4475 |
. . . . . . . . . . 11
    |
| 44 | 42, 43 | syl 14 |
. . . . . . . . . 10
   TopOn   
           |
| 45 | | toponuni 14335 |
. . . . . . . . . . . . 13
 TopOn 
   |
| 46 | 45 | sseq2d 3214 |
. . . . . . . . . . . 12
 TopOn 

    |
| 47 | 46 | ad2antrr 488 |
. . . . . . . . . . 11
   TopOn   
        
    |
| 48 | 8, 47 | mpbid 147 |
. . . . . . . . . 10
   TopOn   
           |
| 49 | 44, 48 | ssexd 4174 |
. . . . . . . . 9
   TopOn   
          |
| 50 | | elrest 12948 |
. . . . . . . . 9
 
   ↾t 


    |
| 51 | 42, 49, 50 | syl2anc 411 |
. . . . . . . 8
   TopOn   
          ↾t  
     |
| 52 | | simpr 110 |
. . . . . . . . . 10
    TopOn 
 
               |
| 53 | 52 | eleq2d 2266 |
. . . . . . . . 9
    TopOn 
 
                 |
| 54 | 52 | imaeq2d 5010 |
. . . . . . . . . . 11
    TopOn 
 
                  
        |
| 55 | | inss2 3385 |
. . . . . . . . . . . 12
   |
| 56 | | resima2 4981 |
. . . . . . . . . . . 12
              
    |
| 57 | 55, 56 | ax-mp 5 |
. . . . . . . . . . 11
 
         
   |
| 58 | 54, 57 | eqtrdi 2245 |
. . . . . . . . . 10
    TopOn 
 
                         |
| 59 | 58 | sseq1d 3213 |
. . . . . . . . 9
    TopOn 
 
                 
         |
| 60 | 53, 59 | anbi12d 473 |
. . . . . . . 8
    TopOn 
 
              
    
  
          |
| 61 | 40, 51, 60 | rexxfr2d 4501 |
. . . . . . 7
   TopOn   
         
 ↾t          

  
          |
| 62 | 37, 61 | sylibrd 169 |
. . . . . 6
   TopOn   
         

   
   ↾t              |
| 63 | 62 | adantr 276 |
. . . . 5
    TopOn 
 
          

   
   ↾t              |
| 64 | 25, 63 | syld 45 |
. . . 4
    TopOn 
 
              
 ↾t              |
| 65 | 13, 64 | sylbid 150 |
. . 3
    TopOn 
 
                
 ↾t              |
| 66 | 65 | ralrimiva 2570 |
. 2
   TopOn   
        
      
 
↾t              |
| 67 | | resttopon 14491 |
. . . 4
  TopOn    ↾t  TopOn    |
| 68 | 1, 8, 67 | syl2anc 411 |
. . 3
   TopOn   
         ↾t  TopOn    |
| 69 | | iscnp 14519 |
. . 3
  
↾t  TopOn  TopOn   
      ↾t     
        
       
 ↾t                |
| 70 | 68, 4, 17, 69 | syl3anc 1249 |
. 2
   TopOn   
              ↾t                      
 ↾t                |
| 71 | 9, 66, 70 | mpbir2and 946 |
1
   TopOn   
             ↾t        |