| Step | Hyp | Ref
| Expression |
| 1 | | inass 3823 |
. . . . 5
      
    |
| 2 | | in32 3825 |
. . . . 5
           |
| 3 | 1, 2 | eqtr3i 2646 |
. . . 4
           |
| 4 | | df-kgen 21337 |
. . . . . . . . . . . 12
𝑘Gen
   
    
↾t     ↾t      |
| 5 | 4 | dmmptss 5631 |
. . . . . . . . . . 11
𝑘Gen  |
| 6 | | elfvdm 6220 |
. . . . . . . . . . 11
 𝑘Gen 
𝑘Gen |
| 7 | 5, 6 | sseldi 3601 |
. . . . . . . . . 10
 𝑘Gen 
  |
| 8 | 7 | adantr 481 |
. . . . . . . . 9
  𝑘Gen 
 ↾t     |
| 9 | | eqid 2622 |
. . . . . . . . . 10
   |
| 10 | 9 | toptopon 20722 |
. . . . . . . . 9

TopOn     |
| 11 | 8, 10 | sylib 208 |
. . . . . . . 8
  𝑘Gen 
 ↾t   TopOn     |
| 12 | | simpl 473 |
. . . . . . . 8
  𝑘Gen 
 ↾t   𝑘Gen    |
| 13 | | elkgen 21339 |
. . . . . . . . 9
 TopOn   
𝑘Gen        
↾t     ↾t       |
| 14 | 13 | biimpa 501 |
. . . . . . . 8
  TopOn   𝑘Gen         
↾t     ↾t      |
| 15 | 11, 12, 14 | syl2anc 693 |
. . . . . . 7
  𝑘Gen 
 ↾t          ↾t     ↾t      |
| 16 | 15 | simpld 475 |
. . . . . 6
  𝑘Gen 
 ↾t  
   |
| 17 | | df-ss 3588 |
. . . . . 6
 
     |
| 18 | 16, 17 | sylib 208 |
. . . . 5
  𝑘Gen 
 ↾t        |
| 19 | 18 | ineq1d 3813 |
. . . 4
  𝑘Gen 
 ↾t            |
| 20 | 3, 19 | syl5eq 2668 |
. . 3
  𝑘Gen 
 ↾t            |
| 21 | | inss2 3834 |
. . . . 5
     |
| 22 | | cmptop 21198 |
. . . . . . . 8
  ↾t  
↾t    |
| 23 | 22 | adantl 482 |
. . . . . . 7
  𝑘Gen 
 ↾t   
↾t    |
| 24 | | restrcl 20961 |
. . . . . . . 8
  ↾t      |
| 25 | 24 | simprd 479 |
. . . . . . 7
  ↾t    |
| 26 | 23, 25 | syl 17 |
. . . . . 6
  𝑘Gen 
 ↾t     |
| 27 | | inex1g 4801 |
. . . . . 6
      |
| 28 | | elpwg 4166 |
. . . . . 6
                 |
| 29 | 26, 27, 28 | 3syl 18 |
. . . . 5
  𝑘Gen 
 ↾t                |
| 30 | 21, 29 | mpbiri 248 |
. . . 4
  𝑘Gen 
 ↾t          |
| 31 | 15 | simprd 479 |
. . . 4
  𝑘Gen 
 ↾t        ↾t     ↾t     |
| 32 | 9 | restin 20970 |
. . . . . 6
 
 
↾t   ↾t       |
| 33 | 8, 26, 32 | syl2anc 693 |
. . . . 5
  𝑘Gen 
 ↾t   
↾t   ↾t       |
| 34 | | simpr 477 |
. . . . 5
  𝑘Gen 
 ↾t   
↾t    |
| 35 | 33, 34 | eqeltrrd 2702 |
. . . 4
  𝑘Gen 
 ↾t   
↾t       |
| 36 | | oveq2 6658 |
. . . . . . 7
     ↾t   ↾t       |
| 37 | 36 | eleq1d 2686 |
. . . . . 6
     
↾t  
↾t        |
| 38 | | ineq2 3808 |
. . . . . . 7
             |
| 39 | 38, 36 | eleq12d 2695 |
. . . . . 6
        ↾t   
    ↾t        |
| 40 | 37, 39 | imbi12d 334 |
. . . . 5
       ↾t 
  
↾t     ↾t           ↾t         |
| 41 | 40 | rspcv 3305 |
. . . 4
           
↾t     ↾t     ↾t           ↾t         |
| 42 | 30, 31, 35, 41 | syl3c 66 |
. . 3
  𝑘Gen 
 ↾t         ↾t       |
| 43 | 20, 42 | eqeltrrd 2702 |
. 2
  𝑘Gen 
 ↾t      ↾t       |
| 44 | 43, 33 | eleqtrrd 2704 |
1
  𝑘Gen 
 ↾t      ↾t    |