| Step | Hyp | Ref
| Expression |
| 1 | | llytop 21275 |
. . 3
 Locally
  |
| 2 | | llytop 21275 |
. . 3
 Locally
  |
| 3 | | txtop 21372 |
. . 3
 
     |
| 4 | 1, 2, 3 | syl2an 494 |
. 2
  Locally
Locally      |
| 5 | | eltx 21371 |
. . . 4
  Locally
Locally     


         |
| 6 | | simpll 790 |
. . . . . . . . 9
   Locally
Locally        

   Locally   |
| 7 | | simprll 802 |
. . . . . . . . 9
   Locally
Locally        

     |
| 8 | | simprrl 804 |
. . . . . . . . . 10
   Locally
Locally        

       |
| 9 | | xp1st 7198 |
. . . . . . . . . 10
         |
| 10 | 8, 9 | syl 17 |
. . . . . . . . 9
   Locally
Locally        

         |
| 11 | | llyi 21277 |
. . . . . . . . 9
  Locally
     
     
↾t     |
| 12 | 6, 7, 10, 11 | syl3anc 1326 |
. . . . . . . 8
   Locally
Locally        

   
      ↾t     |
| 13 | | simplr 792 |
. . . . . . . . 9
   Locally
Locally        

   Locally   |
| 14 | | simprlr 803 |
. . . . . . . . 9
   Locally
Locally        

     |
| 15 | | xp2nd 7199 |
. . . . . . . . . 10
         |
| 16 | 8, 15 | syl 17 |
. . . . . . . . 9
   Locally
Locally        

         |
| 17 | | llyi 21277 |
. . . . . . . . 9
  Locally
     
     
↾t     |
| 18 | 13, 14, 16, 17 | syl3anc 1326 |
. . . . . . . 8
   Locally
Locally        

   
      ↾t     |
| 19 | | reeanv 3107 |
. . . . . . . . 9
  
      
↾t   
     ↾t   
 

     ↾t  

      ↾t      |
| 20 | 1 | ad3antrrr 766 |
. . . . . . . . . . . . . 14
    Locally Locally        

    

 
     ↾t  
      ↾t        |
| 21 | 2 | ad3antlr 767 |
. . . . . . . . . . . . . 14
    Locally Locally        

    

 
     ↾t  
      ↾t        |
| 22 | | simprll 802 |
. . . . . . . . . . . . . 14
    Locally Locally        

    

 
     ↾t  
      ↾t        |
| 23 | | simprlr 803 |
. . . . . . . . . . . . . 14
    Locally Locally        

    

 
     ↾t  
      ↾t        |
| 24 | | txopn 21405 |
. . . . . . . . . . . . . 14
    
        |
| 25 | 20, 21, 22, 23, 24 | syl22anc 1327 |
. . . . . . . . . . . . 13
    Locally Locally        

    

 
     ↾t  
      ↾t            |
| 26 | | simprl1 1106 |
. . . . . . . . . . . . . . . 16
  

 
     ↾t  
      ↾t    
  |
| 27 | | simprr1 1109 |
. . . . . . . . . . . . . . . 16
  

 
     ↾t  
      ↾t    
  |
| 28 | | xpss12 5225 |
. . . . . . . . . . . . . . . 16
 
  
    |
| 29 | 26, 27, 28 | syl2anc 693 |
. . . . . . . . . . . . . . 15
  

 
     ↾t  
      ↾t    
      |
| 30 | | simprrr 805 |
. . . . . . . . . . . . . . 15
   Locally
Locally        

       |
| 31 | 29, 30 | sylan9ssr 3617 |
. . . . . . . . . . . . . 14
    Locally Locally        

    

 
     ↾t  
      ↾t          |
| 32 | | vex 3203 |
. . . . . . . . . . . . . . 15
 |
| 33 | 32 | elpw2 4828 |
. . . . . . . . . . . . . 14
   
    |
| 34 | 31, 33 | sylibr 224 |
. . . . . . . . . . . . 13
    Locally Locally        

    

 
     ↾t  
      ↾t           |
| 35 | 25, 34 | elind 3798 |
. . . . . . . . . . . 12
    Locally Locally        

    

 
     ↾t  
      ↾t               |
| 36 | | 1st2nd2 7205 |
. . . . . . . . . . . . . . 15
                |
| 37 | 8, 36 | syl 17 |
. . . . . . . . . . . . . 14
   Locally
Locally        

                |
| 38 | 37 | adantr 481 |
. . . . . . . . . . . . 13
    Locally Locally        

    

 
     ↾t  
      ↾t                   |
| 39 | | simprl2 1107 |
. . . . . . . . . . . . . . 15
  

 
     ↾t  
      ↾t    
      |
| 40 | | simprr2 1110 |
. . . . . . . . . . . . . . 15
  

 
     ↾t  
      ↾t    
      |
| 41 | | opelxpi 5148 |
. . . . . . . . . . . . . . 15
                          |
| 42 | 39, 40, 41 | syl2anc 693 |
. . . . . . . . . . . . . 14
  

 
     ↾t  
      ↾t    
               |
| 43 | 42 | adantl 482 |
. . . . . . . . . . . . 13
    Locally Locally        

    

 
     ↾t  
      ↾t                     |
| 44 | 38, 43 | eqeltrd 2701 |
. . . . . . . . . . . 12
    Locally Locally        

    

 
     ↾t  
      ↾t          |
| 45 | | txrest 21434 |
. . . . . . . . . . . . . 14
    
     ↾t     
↾t  
↾t     |
| 46 | 20, 21, 22, 23, 45 | syl22anc 1327 |
. . . . . . . . . . . . 13
    Locally Locally        

    

 
     ↾t  
      ↾t         ↾t     
↾t  
↾t     |
| 47 | | simprl3 1108 |
. . . . . . . . . . . . . . 15
  

 
     ↾t  
      ↾t    
 ↾t    |
| 48 | | simprr3 1111 |
. . . . . . . . . . . . . . 15
  

 
     ↾t  
      ↾t    
 ↾t    |
| 49 | | txlly.1 |
. . . . . . . . . . . . . . . 16
 
     |
| 50 | 49 | caovcl 6828 |
. . . . . . . . . . . . . . 15
  
↾t   ↾t     ↾t   ↾t     |
| 51 | 47, 48, 50 | syl2anc 693 |
. . . . . . . . . . . . . 14
  

 
     ↾t  
      ↾t    
  ↾t   ↾t     |
| 52 | 51 | adantl 482 |
. . . . . . . . . . . . 13
    Locally Locally        

    

 
     ↾t  
      ↾t       
↾t  
↾t     |
| 53 | 46, 52 | eqeltrd 2701 |
. . . . . . . . . . . 12
    Locally Locally        

    

 
     ↾t  
      ↾t         ↾t      |
| 54 | | eleq2 2690 |
. . . . . . . . . . . . . 14
   
     |
| 55 | | oveq2 6658 |
. . . . . . . . . . . . . . 15
      ↾t     ↾t      |
| 56 | 55 | eleq1d 2686 |
. . . . . . . . . . . . . 14
      
↾t     ↾t       |
| 57 | 54, 56 | anbi12d 747 |
. . . . . . . . . . . . 13
        ↾t  
  
   ↾t        |
| 58 | 57 | rspcev 3309 |
. . . . . . . . . . . 12
           
   ↾t         
       ↾t     |
| 59 | 35, 44, 53, 58 | syl12anc 1324 |
. . . . . . . . . . 11
    Locally Locally        

    

 
     ↾t  
      ↾t                 ↾t     |
| 60 | 59 | expr 643 |
. . . . . . . . . 10
    Locally Locally        

   
 
       
↾t   
     ↾t               ↾t      |
| 61 | 60 | rexlimdvva 3038 |
. . . . . . . . 9
   Locally
Locally        

    

      
↾t   
     ↾t               ↾t      |
| 62 | 19, 61 | syl5bir 233 |
. . . . . . . 8
   Locally
Locally        

           
↾t   

     ↾t               ↾t      |
| 63 | 12, 18, 62 | mp2and 715 |
. . . . . . 7
   Locally
Locally        

              ↾t     |
| 64 | 63 | expr 643 |
. . . . . 6
   Locally
Locally  
        
           ↾t      |
| 65 | 64 | rexlimdvva 3038 |
. . . . 5
  Locally
Locally       
  
           ↾t      |
| 66 | 65 | ralimdv 2963 |
. . . 4
  Locally
Locally        
  

           ↾t      |
| 67 | 5, 66 | sylbid 230 |
. . 3
  Locally
Locally      
  
       ↾t      |
| 68 | 67 | ralrimiv 2965 |
. 2
  Locally
Locally  
   

         
↾t     |
| 69 | | islly 21271 |
. 2
   Locally
  
                ↾t      |
| 70 | 4, 68, 69 | sylanbrc 698 |
1
  Locally
Locally   
Locally   |