| Step | Hyp | Ref
| Expression |
| 1 | | nfcv 2764 |
. . . . . 6
                 |
| 2 | | nfcv 2764 |
. . . . . 6
                 |
| 3 | | nffvmpt1 6199 |
. . . . . . 7
         |
| 4 | | nfcv 2764 |
. . . . . . 7
  |
| 5 | | nfcv 2764 |
. . . . . . 7
         |
| 6 | 3, 4, 5 | nfov 6676 |
. . . . . 6
                 |
| 7 | | nfcv 2764 |
. . . . . . 7
         |
| 8 | | nfcv 2764 |
. . . . . . 7
  |
| 9 | | nffvmpt1 6199 |
. . . . . . 7
         |
| 10 | 7, 8, 9 | nfov 6676 |
. . . . . 6
                 |
| 11 | | fveq2 6191 |
. . . . . . 7
               |
| 12 | | fveq2 6191 |
. . . . . . 7
               |
| 13 | 11, 12 | oveqan12d 6669 |
. . . . . 6
 
                               |
| 14 | 1, 2, 6, 10, 13 | cbvmpt2 6734 |
. . . . 5
        
                          |
| 15 | | vex 3203 |
. . . . . . . 8
 |
| 16 | | vex 3203 |
. . . . . . . 8
 |
| 17 | 15, 16 | eqop2 7209 |
. . . . . . 7
                    |
| 18 | | fveq2 6191 |
. . . . . . . . 9
                       |
| 19 | | fveq2 6191 |
. . . . . . . . 9
                       |
| 20 | 18, 19 | oveqan12d 6669 |
. . . . . . . 8
                                       
         |
| 21 | 20 | adantl 482 |
. . . . . . 7
                                                     |
| 22 | 17, 21 | sylbi 207 |
. . . . . 6
                                          |
| 23 | 22 | mpt2mpt 6752 |
. . . . 5
                                            |
| 24 | 14, 23 | eqtr4i 2647 |
. . . 4
        
                                   |
| 25 | | simp2 1062 |
. . . . . . 7
 

  |
| 26 | | evlslem4.x |
. . . . . . . 8
 
   |
| 27 | 26 | 3adant3 1081 |
. . . . . . 7
 

  |
| 28 | | eqid 2622 |
. . . . . . . 8
     |
| 29 | 28 | fvmpt2 6291 |
. . . . . . 7
 
         |
| 30 | 25, 27, 29 | syl2anc 693 |
. . . . . 6
 

        |
| 31 | | simp3 1063 |
. . . . . . 7
 

  |
| 32 | | evlslem4.y |
. . . . . . . 8
 
   |
| 33 | 32 | 3adant2 1080 |
. . . . . . 7
 

  |
| 34 | | eqid 2622 |
. . . . . . . 8
     |
| 35 | 34 | fvmpt2 6291 |
. . . . . . 7
 
         |
| 36 | 31, 33, 35 | syl2anc 693 |
. . . . . 6
 

        |
| 37 | 30, 36 | oveq12d 6668 |
. . . . 5
 

      
           |
| 38 | 37 | mpt2eq3dva 6719 |
. . . 4
  
                      |
| 39 | 24, 38 | syl5reqr 2671 |
. . 3
  
                               |
| 40 | 39 | oveq1d 6665 |
. 2
       supp
                           supp
  |
| 41 | | difxp 5558 |
. . . . . 6
       supp
   supp         supp        supp     |
| 42 | 41 | eleq2i 2693 |
. . . . 5
        supp    supp  
      supp        supp      |
| 43 | | elun 3753 |
. . . . 5
       supp
       supp          supp        supp      |
| 44 | 42, 43 | bitri 264 |
. . . 4
        supp    supp  
      supp        supp      |
| 45 | | xp1st 7198 |
. . . . . . . 8
      supp           supp    |
| 46 | 26, 28 | fmptd 6385 |
. . . . . . . . 9
         |
| 47 | | ssid 3624 |
. . . . . . . . . 10
   supp
   supp  |
| 48 | 47 | a1i 11 |
. . . . . . . . 9
    supp    supp   |
| 49 | | evlslem4.i |
. . . . . . . . 9
   |
| 50 | | evlslem4.z |
. . . . . . . . . . 11
     |
| 51 | | fvex 6201 |
. . . . . . . . . . 11
     |
| 52 | 50, 51 | eqeltri 2697 |
. . . . . . . . . 10
 |
| 53 | 52 | a1i 11 |
. . . . . . . . 9
   |
| 54 | 46, 48, 49, 53 | suppssr 7326 |
. . . . . . . 8
 
        supp
 
           |
| 55 | 45, 54 | sylan2 491 |
. . . . . . 7
 
     supp               |
| 56 | 55 | oveq1d 6665 |
. . . . . 6
 
     supp                                       |
| 57 | | evlslem4.r |
. . . . . . . 8
   |
| 58 | 57 | adantr 481 |
. . . . . . 7
 
     supp      |
| 59 | 32, 34 | fmptd 6385 |
. . . . . . . 8
         |
| 60 | | xp2nd 7199 |
. . . . . . . 8
      supp         |
| 61 | | ffvelrn 6357 |
. . . . . . . 8
                         |
| 62 | 59, 60, 61 | syl2an 494 |
. . . . . . 7
 
     supp                |
| 63 | | evlslem4.b |
. . . . . . . 8
     |
| 64 | | evlslem4.t |
. . . . . . . 8
     |
| 65 | 63, 64, 50 | ringlz 18587 |
. . . . . . 7
                         |
| 66 | 58, 62, 65 | syl2anc 693 |
. . . . . 6
 
     supp                |
| 67 | 56, 66 | eqtrd 2656 |
. . . . 5
 
     supp                           |
| 68 | | xp2nd 7199 |
. . . . . . . 8
  
   supp           supp    |
| 69 | | ssid 3624 |
. . . . . . . . . 10
   supp
   supp  |
| 70 | 69 | a1i 11 |
. . . . . . . . 9
    supp    supp   |
| 71 | | evlslem4.j |
. . . . . . . . 9
   |
| 72 | 59, 70, 71, 53 | suppssr 7326 |
. . . . . . . 8
 
        supp
 
           |
| 73 | 68, 72 | sylan2 491 |
. . . . . . 7
 

    supp   
           |
| 74 | 73 | oveq2d 6666 |
. . . . . 6
 

    supp   
                                   |
| 75 | 57 | adantr 481 |
. . . . . . 7
 

    supp   
  |
| 76 | | xp1st 7198 |
. . . . . . . 8
  
   supp         |
| 77 | | ffvelrn 6357 |
. . . . . . . 8
            
            |
| 78 | 46, 76, 77 | syl2an 494 |
. . . . . . 7
 

    supp   
            |
| 79 | 63, 64, 50 | ringrz 18588 |
. . . . . . 7
                       
 |
| 80 | 75, 78, 79 | syl2anc 693 |
. . . . . 6
 

    supp   
          
 |
| 81 | 74, 80 | eqtrd 2656 |
. . . . 5
 

    supp   
                       |
| 82 | 67, 81 | jaodan 826 |
. . . 4
 
      supp        supp                            |
| 83 | 44, 82 | sylan2b 492 |
. . 3
 
       supp    supp   
                       |
| 84 | | xpexg 6960 |
. . . 4
 
     |
| 85 | 49, 71, 84 | syl2anc 693 |
. . 3
     |
| 86 | 83, 85 | suppss2 7329 |
. 2
                            supp     supp
   supp    |
| 87 | 40, 86 | eqsstrd 3639 |
1
       supp     supp
   supp    |