| Step | Hyp | Ref
| Expression |
| 1 | | llytop 21275 |
. . . 4
 Locally
  |
| 2 | | simprr 796 |
. . . . . . . . 9
    Locally     
↾t     ↾t    |
| 3 | | simprl 794 |
. . . . . . . . . 10
    Locally     
↾t      |
| 4 | 1 | ad3antrrr 766 |
. . . . . . . . . . 11
    Locally     
↾t      |
| 5 | | elssuni 4467 |
. . . . . . . . . . . 12
    |
| 6 | 5 | ad2antlr 763 |
. . . . . . . . . . 11
    Locally     
↾t       |
| 7 | | eqid 2622 |
. . . . . . . . . . . 12
   |
| 8 | 7 | restuni 20966 |
. . . . . . . . . . 11
     
↾t    |
| 9 | 4, 6, 8 | syl2anc 693 |
. . . . . . . . . 10
    Locally     
↾t      ↾t    |
| 10 | 3, 9 | eleqtrd 2703 |
. . . . . . . . 9
    Locally     
↾t      ↾t    |
| 11 | | eqid 2622 |
. . . . . . . . . 10
  ↾t   
↾t   |
| 12 | 11 | 1stcclb 21247 |
. . . . . . . . 9
  
↾t    ↾t   

↾t     
↾t    

     |
| 13 | 2, 10, 12 | syl2anc 693 |
. . . . . . . 8
    Locally     
↾t      ↾t      ↾t   


     |
| 14 | | elpwi 4168 |
. . . . . . . . . . . . . . . . . 18
   ↾t 

↾t    |
| 15 | 14 | adantl 482 |
. . . . . . . . . . . . . . . . 17
     Locally
    
↾t      ↾t  

↾t    |
| 16 | 15 | sselda 3603 |
. . . . . . . . . . . . . . . 16
      Locally
 
  
↾t      ↾t    
↾t    |
| 17 | 4 | adantr 481 |
. . . . . . . . . . . . . . . . . 18
     Locally
    
↾t      ↾t  
  |
| 18 | | simpllr 799 |
. . . . . . . . . . . . . . . . . 18
     Locally
    
↾t      ↾t  
  |
| 19 | | restopn2 20981 |
. . . . . . . . . . . . . . . . . 18
 
   ↾t 

    |
| 20 | 17, 18, 19 | syl2anc 693 |
. . . . . . . . . . . . . . . . 17
     Locally
    
↾t      ↾t  
 
↾t 

    |
| 21 | 20 | simplbda 654 |
. . . . . . . . . . . . . . . 16
      Locally
 
  
↾t      ↾t   
↾t     |
| 22 | 16, 21 | syldan 487 |
. . . . . . . . . . . . . . 15
      Locally
 
  
↾t      ↾t      |
| 23 | | df-ss 3588 |
. . . . . . . . . . . . . . 15

    |
| 24 | 22, 23 | sylib 208 |
. . . . . . . . . . . . . 14
      Locally
 
  
↾t      ↾t    
   |
| 25 | 20 | simprbda 653 |
. . . . . . . . . . . . . . 15
      Locally
 
  
↾t      ↾t   
↾t  
  |
| 26 | 16, 25 | syldan 487 |
. . . . . . . . . . . . . 14
      Locally
 
  
↾t      ↾t      |
| 27 | 24, 26 | eqeltrd 2701 |
. . . . . . . . . . . . 13
      Locally
 
  
↾t      ↾t    
   |
| 28 | | ineq1 3807 |
. . . . . . . . . . . . . 14
 
     |
| 29 | 28 | cbvmptv 4750 |
. . . . . . . . . . . . 13
         |
| 30 | 27, 29 | fmptd 6385 |
. . . . . . . . . . . 12
     Locally
    
↾t      ↾t  

         |
| 31 | | frn 6053 |
. . . . . . . . . . . 12
        

     |
| 32 | 30, 31 | syl 17 |
. . . . . . . . . . 11
     Locally
    
↾t      ↾t  
      |
| 33 | 32 | adantrr 753 |
. . . . . . . . . 10
     Locally
    
↾t       ↾t  
 
↾t    

           |
| 34 | | vex 3203 |
. . . . . . . . . . 11
 |
| 35 | 34 | elpw2 4828 |
. . . . . . . . . 10
            |
| 36 | 33, 35 | sylibr 224 |
. . . . . . . . 9
     Locally
    
↾t       ↾t  
 
↾t    

            |
| 37 | | simprrl 804 |
. . . . . . . . . 10
     Locally
    
↾t       ↾t  
 
↾t    

       |
| 38 | | 1stcrestlem 21255 |
. . . . . . . . . 10

      |
| 39 | 37, 38 | syl 17 |
. . . . . . . . 9
     Locally
    
↾t       ↾t  
 
↾t    

           |
| 40 | 4 | ad2antrr 762 |
. . . . . . . . . . . . . 14
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
  |
| 41 | | simpllr 799 |
. . . . . . . . . . . . . . 15
     Locally
    
↾t       ↾t  
 
↾t    

       |
| 42 | 41 | adantr 481 |
. . . . . . . . . . . . . 14
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
  |
| 43 | | simprl 794 |
. . . . . . . . . . . . . 14
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
  |
| 44 | | elrestr 16089 |
. . . . . . . . . . . . . 14
 
    ↾t    |
| 45 | 40, 42, 43, 44 | syl3anc 1326 |
. . . . . . . . . . . . 13
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
   ↾t    |
| 46 | | simprrr 805 |
. . . . . . . . . . . . . 14
     Locally
    
↾t       ↾t  
 
↾t    

      
↾t    

    |
| 47 | 46 | adantr 481 |
. . . . . . . . . . . . 13
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
 
↾t    

    |
| 48 | | simprr 796 |
. . . . . . . . . . . . . 14
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
  |
| 49 | 3 | ad2antrr 762 |
. . . . . . . . . . . . . 14
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
  |
| 50 | 48, 49 | elind 3798 |
. . . . . . . . . . . . 13
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
    |
| 51 | | eleq2 2690 |
. . . . . . . . . . . . . . 15
   
     |
| 52 | | sseq2 3627 |
. . . . . . . . . . . . . . . . 17
   

    |
| 53 | 52 | anbi2d 740 |
. . . . . . . . . . . . . . . 16
    
 
      |
| 54 | 53 | rexbidv 3052 |
. . . . . . . . . . . . . . 15
    

 

      |
| 55 | 51, 54 | imbi12d 334 |
. . . . . . . . . . . . . 14
      
    


       |
| 56 | 55 | rspcv 3305 |
. . . . . . . . . . . . 13
    ↾t    
↾t    

      
       |
| 57 | 45, 47, 50, 56 | syl3c 66 |
. . . . . . . . . . . 12
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 


     |
| 58 | 3 | ad2antrr 762 |
. . . . . . . . . . . . . . . . . 18
      Locally
 
  
↾t      ↾t      |
| 59 | | elin 3796 |
. . . . . . . . . . . . . . . . . . 19
  

   |
| 60 | 59 | simplbi2com 657 |
. . . . . . . . . . . . . . . . . 18
 
     |
| 61 | 58, 60 | syl 17 |
. . . . . . . . . . . . . . . . 17
      Locally
 
  
↾t      ↾t    
     |
| 62 | 22 | biantrud 528 |
. . . . . . . . . . . . . . . . . . 19
      Locally
 
  
↾t      ↾t    
     |
| 63 | | ssin 3835 |
. . . . . . . . . . . . . . . . . . 19
 


   |
| 64 | 62, 63 | syl6bb 276 |
. . . . . . . . . . . . . . . . . 18
      Locally
 
  
↾t      ↾t    

    |
| 65 | | ssinss1 3841 |
. . . . . . . . . . . . . . . . . 18
 
   |
| 66 | 64, 65 | syl6bir 244 |
. . . . . . . . . . . . . . . . 17
      Locally
 
  
↾t      ↾t    
  
    |
| 67 | 61, 66 | anim12d 586 |
. . . . . . . . . . . . . . . 16
      Locally
 
  
↾t      ↾t     
     
      |
| 68 | 67 | reximdva 3017 |
. . . . . . . . . . . . . . 15
     Locally
    
↾t      ↾t  
 
    
         |
| 69 | | vex 3203 |
. . . . . . . . . . . . . . . . . 18
 |
| 70 | 69 | inex1 4799 |
. . . . . . . . . . . . . . . . 17
   |
| 71 | 70 | rgenw 2924 |
. . . . . . . . . . . . . . . 16

   |
| 72 | | eleq2 2690 |
. . . . . . . . . . . . . . . . . 18
   

    |
| 73 | | sseq1 3626 |
. . . . . . . . . . . . . . . . . 18
   
     |
| 74 | 72, 73 | anbi12d 747 |
. . . . . . . . . . . . . . . . 17
    
          |
| 75 | 29, 74 | rexrnmpt 6369 |
. . . . . . . . . . . . . . . 16
 


 
     
 
         |
| 76 | 71, 75 | ax-mp 5 |
. . . . . . . . . . . . . . 15
        

  
     |
| 77 | 68, 76 | syl6ibr 242 |
. . . . . . . . . . . . . 14
     Locally
    
↾t      ↾t  
 
    
          |
| 78 | 77 | adantrr 753 |
. . . . . . . . . . . . 13
     Locally
    
↾t       ↾t  
 
↾t    

      

              |
| 79 | 78 | adantr 481 |
. . . . . . . . . . . 12
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
 
    
          |
| 80 | 57, 79 | mpd 15 |
. . . . . . . . . . 11
      Locally
 
  
↾t       ↾t  
 
↾t    

     
 
          |
| 81 | 80 | expr 643 |
. . . . . . . . . 10
      Locally
 
  
↾t       ↾t  
 
↾t    

       
          |
| 82 | 81 | ralrimiva 2966 |
. . . . . . . . 9
     Locally
    
↾t       ↾t  
 
↾t    

     

           |
| 83 | | breq1 4656 |
. . . . . . . . . . 11
             |
| 84 | | rexeq 3139 |
. . . . . . . . . . . . 13
      


           |
| 85 | 84 | imbi2d 330 |
. . . . . . . . . . . 12
       

 

            |
| 86 | 85 | ralbidv 2986 |
. . . . . . . . . . 11
      



 


            |
| 87 | 83, 86 | anbi12d 747 |
. . . . . . . . . 10
       



   

   

             |
| 88 | 87 | rspcev 3309 |
. . . . . . . . 9
              
         
   



     |
| 89 | 36, 39, 82, 88 | syl12anc 1324 |
. . . . . . . 8
     Locally
    
↾t       ↾t  
 
↾t    

        



     |
| 90 | 13, 89 | rexlimddv 3035 |
. . . . . . 7
    Locally     
↾t       



     |
| 91 | 90 | 3adantr1 1220 |
. . . . . 6
    Locally    


↾t       



     |
| 92 | | simpl 473 |
. . . . . . 7
  Locally
 
Locally   |
| 93 | 1 | adantr 481 |
. . . . . . . 8
  Locally
    |
| 94 | 7 | topopn 20711 |
. . . . . . . 8
    |
| 95 | 93, 94 | syl 17 |
. . . . . . 7
  Locally
  
  |
| 96 | | simpr 477 |
. . . . . . 7
  Locally
 
   |
| 97 | | llyi 21277 |
. . . . . . 7
  Locally

 

 
 ↾t     |
| 98 | 92, 95, 96, 97 | syl3anc 1326 |
. . . . . 6
  Locally
  
 

↾t     |
| 99 | 91, 98 | r19.29a 3078 |
. . . . 5
  Locally
  
     
     |
| 100 | 99 | ralrimiva 2966 |
. . . 4
 Locally
      



     |
| 101 | 7 | is1stc2 21245 |
. . . 4


      



      |
| 102 | 1, 100, 101 | sylanbrc 698 |
. . 3
 Locally
  |
| 103 | 102 | ssriv 3607 |
. 2
Locally  |
| 104 | | 1stcrest 21256 |
. . . . 5
    ↾t    |
| 105 | 104 | adantl 482 |
. . . 4
 
  
↾t    |
| 106 | | 1stctop 21246 |
. . . . . 6

  |
| 107 | 106 | ssriv 3607 |
. . . . 5
 |
| 108 | 107 | a1i 11 |
. . . 4
  |
| 109 | 105, 108 | restlly 21286 |
. . 3
Locally   |
| 110 | 109 | trud 1493 |
. 2
Locally  |
| 111 | 103, 110 | eqssi 3619 |
1
Locally  |