| Step | Hyp | Ref
| Expression |
| 1 | | simpr 477 |
. . . . 5
         |
| 2 | | sseqin2 3817 |
. . . . 5

    |
| 3 | 1, 2 | sylib 208 |
. . . 4
           |
| 4 | | simpl 473 |
. . . . 5
             |
| 5 | | id 22 |
. . . . . 6
   |
| 6 | | filtop 21659 |
. . . . . 6
    
  |
| 7 | | ssexg 4804 |
. . . . . 6
 
   |
| 8 | 5, 6, 7 | syl2anr 495 |
. . . . 5
         |
| 9 | 6 | adantr 481 |
. . . . 5
         |
| 10 | | elrestr 16089 |
. . . . 5
         
↾t    |
| 11 | 4, 8, 9, 10 | syl3anc 1326 |
. . . 4
         
↾t    |
| 12 | 3, 11 | eqeltrrd 2702 |
. . 3
       
↾t    |
| 13 | | elpwi 4168 |
. . . . 5
    |
| 14 | | vex 3203 |
. . . . . . . . . 10
 |
| 15 | 14 | inex1 4799 |
. . . . . . . . 9
   |
| 16 | 15 | a1i 11 |
. . . . . . . 8
       


 
   |
| 17 | | elrest 16088 |
. . . . . . . . . 10
         ↾t  
     |
| 18 | 8, 17 | syldan 487 |
. . . . . . . . 9
         ↾t  
     |
| 19 | 18 | adantr 481 |
. . . . . . . 8
       

 
↾t 


    |
| 20 | | simpr 477 |
. . . . . . . . 9
       



 

   |
| 21 | 20 | sseq1d 3632 |
. . . . . . . 8
       



 
      |
| 22 | 16, 19, 21 | rexxfr2d 4883 |
. . . . . . 7
       

 
 ↾t         |
| 23 | | indir 3875 |
. . . . . . . . . 10
       
   |
| 24 | | simplr 792 |
. . . . . . . . . . . . 13
       




     |
| 25 | | df-ss 3588 |
. . . . . . . . . . . . 13

    |
| 26 | 24, 25 | sylib 208 |
. . . . . . . . . . . 12
       




       |
| 27 | 26 | uneq2d 3767 |
. . . . . . . . . . 11
       




      
        |
| 28 | | simprr 796 |
. . . . . . . . . . . 12
       




    
  |
| 29 | | ssequn1 3783 |
. . . . . . . . . . . 12
  
 
    |
| 30 | 28, 29 | sylib 208 |
. . . . . . . . . . 11
       




         |
| 31 | 27, 30 | eqtrd 2656 |
. . . . . . . . . 10
       




      
    |
| 32 | 23, 31 | syl5eq 2668 |
. . . . . . . . 9
       




         |
| 33 | | simplll 798 |
. . . . . . . . . 10
       




  
      |
| 34 | | simpllr 799 |
. . . . . . . . . . 11
       




     |
| 35 | 33, 34, 8 | syl2anc 693 |
. . . . . . . . . 10
       




  
  |
| 36 | | simprl 794 |
. . . . . . . . . . 11
       




  
  |
| 37 | | filelss 21656 |
. . . . . . . . . . . . 13
         |
| 38 | 33, 36, 37 | syl2anc 693 |
. . . . . . . . . . . 12
       




     |
| 39 | 24, 34 | sstrd 3613 |
. . . . . . . . . . . 12
       




     |
| 40 | 38, 39 | unssd 3789 |
. . . . . . . . . . 11
       




    
  |
| 41 | | ssun1 3776 |
. . . . . . . . . . . 12

  |
| 42 | 41 | a1i 11 |
. . . . . . . . . . 11
       




       |
| 43 | | filss 21657 |
. . . . . . . . . . 11
       

        |
| 44 | 33, 36, 40, 42, 43 | syl13anc 1328 |
. . . . . . . . . 10
       




       |
| 45 | | elrestr 16089 |
. . . . . . . . . 10
           
 
↾t    |
| 46 | 33, 35, 44, 45 | syl3anc 1326 |
. . . . . . . . 9
       




        ↾t    |
| 47 | 32, 46 | eqeltrrd 2702 |
. . . . . . . 8
       




  
 ↾t    |
| 48 | 47 | rexlimdvaa 3032 |
. . . . . . 7
       

 



↾t     |
| 49 | 22, 48 | sylbid 230 |
. . . . . 6
       

 
 ↾t    ↾t     |
| 50 | 49 | ex 450 |
. . . . 5
       
   ↾t    ↾t      |
| 51 | 13, 50 | syl5 34 |
. . . 4
           
↾t    ↾t      |
| 52 | 51 | ralrimiv 2965 |
. . 3
            ↾t    ↾t     |
| 53 | | simpll 790 |
. . . . . 6
       

 
      |
| 54 | 8 | adantr 481 |
. . . . . 6
       

 
  |
| 55 | | filin 21658 |
. . . . . . . 8
     
 
   |
| 56 | 55 | 3expb 1266 |
. . . . . . 7
      
 
    |
| 57 | 56 | adantlr 751 |
. . . . . 6
       

      |
| 58 | | elrestr 16089 |
. . . . . 6
           
 
↾t    |
| 59 | 53, 54, 57, 58 | syl3anc 1326 |
. . . . 5
       

       ↾t    |
| 60 | 59 | ralrimivva 2971 |
. . . 4
       

 
   ↾t    |
| 61 | | vex 3203 |
. . . . . . 7
 |
| 62 | 61 | inex1 4799 |
. . . . . 6
   |
| 63 | 62 | a1i 11 |
. . . . 5
       
 
   |
| 64 | | elrest 16088 |
. . . . . 6
         ↾t  
     |
| 65 | 8, 64 | syldan 487 |
. . . . 5
         ↾t  
     |
| 66 | 15 | a1i 11 |
. . . . . 6
       

    
   |
| 67 | 18 | adantr 481 |
. . . . . 6
       
     ↾t  
     |
| 68 | | ineq12 3809 |
. . . . . . . . 9
   
             |
| 69 | | inindir 3831 |
. . . . . . . . 9
       
   |
| 70 | 68, 69 | syl6eqr 2674 |
. . . . . . . 8
   
           |
| 71 | 70 | adantll 750 |
. . . . . . 7
       

              |
| 72 | 71 | eleq1d 2686 |
. . . . . 6
       

          ↾t 
 
   ↾t     |
| 73 | 66, 67, 72 | ralxfr2d 4882 |
. . . . 5
       
    
 ↾t     
↾t 

 
   ↾t     |
| 74 | 63, 65, 73 | ralxfr2d 4882 |
. . . 4
        
 ↾t    
↾t     
↾t 


 
   ↾t     |
| 75 | 60, 74 | mpbird 247 |
. . 3
        
↾t    
↾t     
↾t    |
| 76 | | isfil2 21660 |
. . . . . 6
  ↾t         ↾t 
  ↾t  
↾t       
↾t    ↾t     ↾t    
↾t     
↾t     |
| 77 | | restsspw 16092 |
. . . . . . . 8
 ↾t 
  |
| 78 | | 3anass 1042 |
. . . . . . . 8
  
↾t    ↾t  
↾t  
  ↾t     ↾t  
↾t      |
| 79 | 77, 78 | mpbiran 953 |
. . . . . . 7
  
↾t    ↾t  
↾t  
  ↾t   ↾t     |
| 80 | 79 | 3anbi1i 1253 |
. . . . . 6
    ↾t    ↾t   ↾t       
↾t    ↾t     ↾t    
↾t     
↾t  
   ↾t  
↾t       
↾t    ↾t     ↾t    
↾t     
↾t     |
| 81 | | 3anass 1042 |
. . . . . 6
    ↾t  
↾t       
↾t    ↾t     ↾t    
↾t     
↾t  
   ↾t  
↾t        
↾t    ↾t     ↾t    
↾t     
↾t      |
| 82 | 76, 80, 81 | 3bitri 286 |
. . . . 5
  ↾t         ↾t  
↾t        
↾t    ↾t     ↾t    
↾t     
↾t      |
| 83 | | anass 681 |
. . . . 5
    ↾t  
↾t        
↾t    ↾t     ↾t    
↾t     
↾t      ↾t  
 ↾t 
 
   
↾t    ↾t     ↾t    
↾t     
↾t       |
| 84 | | ancom 466 |
. . . . 5
   ↾t    ↾t        ↾t    ↾t   
 ↾t    
↾t     
↾t        ↾t        ↾t    ↾t   
 ↾t    
↾t     
↾t     ↾t     |
| 85 | 82, 83, 84 | 3bitri 286 |
. . . 4
  ↾t        
↾t   
   
↾t    ↾t     ↾t    
↾t     
↾t     ↾t     |
| 86 | 85 | baib 944 |
. . 3
   ↾t   
   
↾t    ↾t     ↾t    
↾t     
↾t      ↾t     
 ↾t     |
| 87 | 12, 52, 75, 86 | syl12anc 1324 |
. 2
        
↾t       ↾t     |
| 88 | | nesym 2850 |
. . . 4
  
    |
| 89 | 88 | ralbii 2980 |
. . 3
 

      |
| 90 | | elrest 16088 |
. . . . . 6
         ↾t  
     |
| 91 | 8, 90 | syldan 487 |
. . . . 5
         ↾t  
     |
| 92 | | dfrex2 2996 |
. . . . 5
   

    |
| 93 | 91, 92 | syl6bb 276 |
. . . 4
         ↾t        |
| 94 | 93 | con2bid 344 |
. . 3
        
 
 ↾t     |
| 95 | 89, 94 | syl5bb 272 |
. 2
        
 
 ↾t     |
| 96 | 87, 95 | bitr4d 271 |
1
        
↾t      
     |