| Step | Hyp | Ref
| Expression |
| 1 | | llytop 21275 |
. . . 4
 Locally 𝑛Locally   |
| 2 | | llyi 21277 |
. . . . . . 7
  Locally
𝑛Locally
 
  ↾t 
𝑛Locally    |
| 3 | | simprr3 1111 |
. . . . . . . . 9
   Locally 𝑛Locally
   
↾t  𝑛Locally     ↾t  𝑛Locally   |
| 4 | | simprl 794 |
. . . . . . . . . 10
   Locally 𝑛Locally
   
↾t  𝑛Locally      |
| 5 | | ssid 3624 |
. . . . . . . . . . 11
 |
| 6 | 5 | a1i 11 |
. . . . . . . . . 10
   Locally 𝑛Locally
   
↾t  𝑛Locally      |
| 7 | | simpl1 1064 |
. . . . . . . . . . . 12
   Locally 𝑛Locally
   
↾t  𝑛Locally    Locally 𝑛Locally   |
| 8 | 7, 1 | syl 17 |
. . . . . . . . . . 11
   Locally 𝑛Locally
   
↾t  𝑛Locally      |
| 9 | | restopn2 20981 |
. . . . . . . . . . 11
 
   ↾t 

    |
| 10 | 8, 4, 9 | syl2anc 693 |
. . . . . . . . . 10
   Locally 𝑛Locally
   
↾t  𝑛Locally      ↾t       |
| 11 | 4, 6, 10 | mpbir2and 957 |
. . . . . . . . 9
   Locally 𝑛Locally
   
↾t  𝑛Locally    
↾t    |
| 12 | | simprr2 1110 |
. . . . . . . . 9
   Locally 𝑛Locally
   
↾t  𝑛Locally      |
| 13 | | nlly2i 21279 |
. . . . . . . . 9
  
↾t  𝑛Locally
 ↾t 
    
↾t      ↾t 
↾t     |
| 14 | 3, 11, 12, 13 | syl3anc 1326 |
. . . . . . . 8
   Locally 𝑛Locally
   
↾t  𝑛Locally       
↾t      ↾t 
↾t     |
| 15 | | restopn2 20981 |
. . . . . . . . . . . . . 14
 
   ↾t 

    |
| 16 | 8, 4, 15 | syl2anc 693 |
. . . . . . . . . . . . 13
   Locally 𝑛Locally
   
↾t  𝑛Locally      ↾t       |
| 17 | 16 | adantr 481 |
. . . . . . . . . . . 12
    Locally 𝑛Locally




↾t  𝑛Locally        ↾t 

    |
| 18 | 8 | adantr 481 |
. . . . . . . . . . . . . . . . 17
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 19 | | simpr2l 1120 |
. . . . . . . . . . . . . . . . . 18
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 20 | | simpr31 1151 |
. . . . . . . . . . . . . . . . . 18
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 21 | | opnneip 20923 |
. . . . . . . . . . . . . . . . . 18
 
             |
| 22 | 18, 19, 20, 21 | syl3anc 1326 |
. . . . . . . . . . . . . . . . 17
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t                 |
| 23 | | simpr32 1152 |
. . . . . . . . . . . . . . . . 17
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 24 | | simpr1 1067 |
. . . . . . . . . . . . . . . . . . 19
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t        |
| 25 | 24 | elpwid 4170 |
. . . . . . . . . . . . . . . . . 18
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 26 | 4 | adantr 481 |
. . . . . . . . . . . . . . . . . . 19
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 27 | | elssuni 4467 |
. . . . . . . . . . . . . . . . . . 19
    |
| 28 | 26, 27 | syl 17 |
. . . . . . . . . . . . . . . . . 18
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t        |
| 29 | 25, 28 | sstrd 3613 |
. . . . . . . . . . . . . . . . 17
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t        |
| 30 | | eqid 2622 |
. . . . . . . . . . . . . . . . . 18
   |
| 31 | 30 | ssnei2 20920 |
. . . . . . . . . . . . . . . . 17
              
  
            |
| 32 | 18, 22, 23, 29, 31 | syl22anc 1327 |
. . . . . . . . . . . . . . . 16
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t                 |
| 33 | | simprr1 1109 |
. . . . . . . . . . . . . . . . . . 19
   Locally 𝑛Locally
   
↾t  𝑛Locally      |
| 34 | 33 | adantr 481 |
. . . . . . . . . . . . . . . . . 18
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 35 | 25, 34 | sstrd 3613 |
. . . . . . . . . . . . . . . . 17
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       |
| 36 | | selpw 4165 |
. . . . . . . . . . . . . . . . 17
 
  |
| 37 | 35, 36 | sylibr 224 |
. . . . . . . . . . . . . . . 16
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t        |
| 38 | 32, 37 | elind 3798 |
. . . . . . . . . . . . . . 15
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t                    |
| 39 | | restabs 20969 |
. . . . . . . . . . . . . . . . 17
    
↾t 
↾t  
↾t    |
| 40 | 18, 25, 26, 39 | syl3anc 1326 |
. . . . . . . . . . . . . . . 16
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       ↾t  ↾t   ↾t    |
| 41 | | simpr33 1153 |
. . . . . . . . . . . . . . . 16
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t       ↾t  ↾t    |
| 42 | 40, 41 | eqeltrrd 2702 |
. . . . . . . . . . . . . . 15
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t      ↾t    |
| 43 | 38, 42 | jca 554 |
. . . . . . . . . . . . . 14
    Locally 𝑛Locally




↾t  𝑛Locally       

  ↾t 
↾t                   
↾t     |
| 44 | 43 | 3exp2 1285 |
. . . . . . . . . . . . 13
   Locally 𝑛Locally
   
↾t  𝑛Locally             ↾t  ↾t                 
↾t        |
| 45 | 44 | imp 445 |
. . . . . . . . . . . 12
    Locally 𝑛Locally




↾t  𝑛Locally             ↾t  ↾t                 
↾t       |
| 46 | 17, 45 | sylbid 230 |
. . . . . . . . . . 11
    Locally 𝑛Locally




↾t  𝑛Locally        ↾t      ↾t  ↾t                 
↾t       |
| 47 | 46 | rexlimdv 3030 |
. . . . . . . . . 10
    Locally 𝑛Locally




↾t  𝑛Locally        
↾t      ↾t 
↾t                  ↾t      |
| 48 | 47 | expimpd 629 |
. . . . . . . . 9
   Locally 𝑛Locally
   
↾t  𝑛Locally        
↾t      ↾t 
↾t                   ↾t      |
| 49 | 48 | reximdv2 3014 |
. . . . . . . 8
   Locally 𝑛Locally
   
↾t  𝑛Locally     
   ↾t      ↾t 
↾t                   ↾t     |
| 50 | 14, 49 | mpd 15 |
. . . . . . 7
   Locally 𝑛Locally
   
↾t  𝑛Locally                    ↾t    |
| 51 | 2, 50 | rexlimddv 3035 |
. . . . . 6
  Locally
𝑛Locally
                 ↾t    |
| 52 | 51 | 3expb 1266 |
. . . . 5
  Locally
𝑛Locally 
 
                ↾t    |
| 53 | 52 | ralrimivva 2971 |
. . . 4
 Locally 𝑛Locally   
               ↾t    |
| 54 | | isnlly 21272 |
. . . 4
 𝑛Locally 


                ↾t     |
| 55 | 1, 53, 54 | sylanbrc 698 |
. . 3
 Locally 𝑛Locally 𝑛Locally   |
| 56 | 55 | ssriv 3607 |
. 2
Locally
𝑛Locally 𝑛Locally
 |
| 57 | | nllyrest 21289 |
. . . . 5
 
𝑛Locally   ↾t  𝑛Locally   |
| 58 | 57 | adantl 482 |
. . . 4
  𝑛Locally   
↾t  𝑛Locally   |
| 59 | | nllytop 21276 |
. . . . . 6
 𝑛Locally
  |
| 60 | 59 | ssriv 3607 |
. . . . 5
𝑛Locally
 |
| 61 | 60 | a1i 11 |
. . . 4
𝑛Locally   |
| 62 | 58, 61 | restlly 21286 |
. . 3
𝑛Locally Locally 𝑛Locally   |
| 63 | 62 | trud 1493 |
. 2
𝑛Locally
Locally
𝑛Locally  |
| 64 | 56, 63 | eqssi 3619 |
1
Locally
𝑛Locally 𝑛Locally  |