| Step | Hyp | Ref
| Expression |
| 1 | | nllytop 21276 |
. . 3
 𝑛Locally
  |
| 2 | | resttop 20964 |
. . 3
 
 
↾t    |
| 3 | 1, 2 | sylan 488 |
. 2
 
𝑛Locally   ↾t    |
| 4 | | restopn2 20981 |
. . . . 5
 
   ↾t 

    |
| 5 | 1, 4 | sylan 488 |
. . . 4
 
𝑛Locally    ↾t       |
| 6 | | simp1l 1085 |
. . . . . . . . 9
   𝑛Locally
 
 
𝑛Locally   |
| 7 | | simp2l 1087 |
. . . . . . . . 9
   𝑛Locally
 
 
  |
| 8 | | simp3 1063 |
. . . . . . . . 9
   𝑛Locally
 
 
  |
| 9 | | nlly2i 21279 |
. . . . . . . . 9
 
𝑛Locally
   

 ↾t     |
| 10 | 6, 7, 8, 9 | syl3anc 1326 |
. . . . . . . 8
   𝑛Locally
 
 
  

 ↾t     |
| 11 | 3 | 3ad2ant1 1082 |
. . . . . . . . . . . . . . . 16
   𝑛Locally
 
 
 ↾t    |
| 12 | 11 | 3ad2ant1 1082 |
. . . . . . . . . . . . . . 15
    𝑛Locally 

    

↾t      ↾t    |
| 13 | | simp3l 1089 |
. . . . . . . . . . . . . . . . 17
    𝑛Locally 

    

↾t       |
| 14 | | simp3r2 1170 |
. . . . . . . . . . . . . . . . . 18
    𝑛Locally 

    

↾t       |
| 15 | | simp2 1062 |
. . . . . . . . . . . . . . . . . . . 20
    𝑛Locally 

    

↾t        |
| 16 | 15 | elpwid 4170 |
. . . . . . . . . . . . . . . . . . 19
    𝑛Locally 

    

↾t       |
| 17 | | simp12r 1175 |
. . . . . . . . . . . . . . . . . . 19
    𝑛Locally 

    

↾t       |
| 18 | 16, 17 | sstrd 3613 |
. . . . . . . . . . . . . . . . . 18
    𝑛Locally 

    

↾t       |
| 19 | 14, 18 | sstrd 3613 |
. . . . . . . . . . . . . . . . 17
    𝑛Locally 

    

↾t       |
| 20 | 6 | 3ad2ant1 1082 |
. . . . . . . . . . . . . . . . . . 19
    𝑛Locally 

    

↾t     𝑛Locally   |
| 21 | 20, 1 | syl 17 |
. . . . . . . . . . . . . . . . . 18
    𝑛Locally 

    

↾t       |
| 22 | | simp11r 1173 |
. . . . . . . . . . . . . . . . . 18
    𝑛Locally 

    

↾t       |
| 23 | | restopn2 20981 |
. . . . . . . . . . . . . . . . . 18
 
   ↾t 

    |
| 24 | 21, 22, 23 | syl2anc 693 |
. . . . . . . . . . . . . . . . 17
    𝑛Locally 

    

↾t      
↾t 

    |
| 25 | 13, 19, 24 | mpbir2and 957 |
. . . . . . . . . . . . . . . 16
    𝑛Locally 

    

↾t      ↾t    |
| 26 | | simp3r1 1169 |
. . . . . . . . . . . . . . . 16
    𝑛Locally 

    

↾t       |
| 27 | | opnneip 20923 |
. . . . . . . . . . . . . . . 16
  
↾t   ↾t        ↾t          |
| 28 | 12, 25, 26, 27 | syl3anc 1326 |
. . . . . . . . . . . . . . 15
    𝑛Locally 

    

↾t          ↾t          |
| 29 | | elssuni 4467 |
. . . . . . . . . . . . . . . . . 18
    |
| 30 | 22, 29 | syl 17 |
. . . . . . . . . . . . . . . . 17
    𝑛Locally 

    

↾t        |
| 31 | | eqid 2622 |
. . . . . . . . . . . . . . . . . 18
   |
| 32 | 31 | restuni 20966 |
. . . . . . . . . . . . . . . . 17
     
↾t    |
| 33 | 21, 30, 32 | syl2anc 693 |
. . . . . . . . . . . . . . . 16
    𝑛Locally 

    

↾t      
↾t    |
| 34 | 18, 33 | sseqtrd 3641 |
. . . . . . . . . . . . . . 15
    𝑛Locally 

    

↾t       ↾t    |
| 35 | | eqid 2622 |
. . . . . . . . . . . . . . . 16
  ↾t   
↾t   |
| 36 | 35 | ssnei2 20920 |
. . . . . . . . . . . . . . 15
    ↾t       ↾t            ↾t         ↾t          |
| 37 | 12, 28, 14, 34, 36 | syl22anc 1327 |
. . . . . . . . . . . . . 14
    𝑛Locally 

    

↾t          ↾t          |
| 38 | 37, 15 | elind 3798 |
. . . . . . . . . . . . 13
    𝑛Locally 

    

↾t           ↾t            |
| 39 | | restabs 20969 |
. . . . . . . . . . . . . . 15
    
↾t 
↾t  
↾t    |
| 40 | 21, 18, 22, 39 | syl3anc 1326 |
. . . . . . . . . . . . . 14
    𝑛Locally 

    

↾t       ↾t  ↾t   ↾t    |
| 41 | | simp3r3 1171 |
. . . . . . . . . . . . . 14
    𝑛Locally 

    

↾t      ↾t    |
| 42 | 40, 41 | eqeltrd 2701 |
. . . . . . . . . . . . 13
    𝑛Locally 

    

↾t       ↾t  ↾t    |
| 43 | 38, 42 | jca 554 |
. . . . . . . . . . . 12
    𝑛Locally 

    

↾t           
↾t            ↾t  ↾t     |
| 44 | 43 | 3expa 1265 |
. . . . . . . . . . 11
     𝑛Locally   

   

↾t           
↾t            ↾t  ↾t     |
| 45 | 44 | rexlimdvaa 3032 |
. . . . . . . . . 10
    𝑛Locally 

        ↾t          ↾t            ↾t  ↾t      |
| 46 | 45 | expimpd 629 |
. . . . . . . . 9
   𝑛Locally
 
 
    

↾t           ↾t            ↾t  ↾t      |
| 47 | 46 | reximdv2 3014 |
. . . . . . . 8
   𝑛Locally
 
 
 
 


↾t         
↾t             ↾t  ↾t     |
| 48 | 10, 47 | mpd 15 |
. . . . . . 7
   𝑛Locally
 
 
      
↾t             ↾t  ↾t    |
| 49 | 48 | 3expa 1265 |
. . . . . 6
    𝑛Locally 

 
        ↾t             ↾t  ↾t    |
| 50 | 49 | ralrimiva 2966 |
. . . . 5
   𝑛Locally
 
 

      
↾t             ↾t  ↾t    |
| 51 | 50 | ex 450 |
. . . 4
 
𝑛Locally   
  
      ↾t             ↾t  ↾t     |
| 52 | 5, 51 | sylbid 230 |
. . 3
 
𝑛Locally    ↾t 

      
↾t             ↾t  ↾t     |
| 53 | 52 | ralrimiv 2965 |
. 2
 
𝑛Locally   
↾t   
      
↾t             ↾t  ↾t    |
| 54 | | isnlly 21272 |
. 2
  ↾t  𝑛Locally
  ↾t    ↾t   
      
↾t             ↾t  ↾t     |
| 55 | 3, 53, 54 | sylanbrc 698 |
1
 
𝑛Locally   ↾t  𝑛Locally   |