| Step | Hyp | Ref
| Expression |
| 1 | | nffvmpt1 6199 |
. . . . 5
           |
| 2 | | nfcv 2764 |
. . . . 5
   |
| 3 | 1, 2 | nffv 6198 |
. . . 4
               |
| 4 | | nfcv 2764 |
. . . . . . 7
   |
| 5 | | nfmpt1 4747 |
. . . . . . 7
     |
| 6 | 4, 5 | nfmpt 4746 |
. . . . . 6
       |
| 7 | | nfcv 2764 |
. . . . . 6
   |
| 8 | 6, 7 | nffv 6198 |
. . . . 5
           |
| 9 | | nfcv 2764 |
. . . . 5
   |
| 10 | 8, 9 | nffv 6198 |
. . . 4
               |
| 11 | | nfcv 2764 |
. . . 4
               |
| 12 | | nfcv 2764 |
. . . 4
               |
| 13 | | fveq2 6191 |
. . . . . 6
                   |
| 14 | 13 | fveq1d 6193 |
. . . . 5
                           |
| 15 | | fveq2 6191 |
. . . . 5
                           |
| 16 | 14, 15 | sylan9eq 2676 |
. . . 4
 
                           |
| 17 | 3, 10, 11, 12, 16 | cbvmpt2 6734 |
. . 3
                               |
| 18 | | simplr 792 |
. . . . . . . 8
       |
| 19 | | cnmptk1p.j |
. . . . . . . . . . . 12
 TopOn    |
| 20 | | cnmptk1p.n |
. . . . . . . . . . . . . 14

𝑛Locally   |
| 21 | | nllytop 21276 |
. . . . . . . . . . . . . 14
 𝑛Locally   |
| 22 | 20, 21 | syl 17 |
. . . . . . . . . . . . 13
   |
| 23 | | cnmptk1p.l |
. . . . . . . . . . . . . 14
 TopOn    |
| 24 | | topontop 20718 |
. . . . . . . . . . . . . 14
 TopOn 
  |
| 25 | 23, 24 | syl 17 |
. . . . . . . . . . . . 13
   |
| 26 | | eqid 2622 |
. . . . . . . . . . . . . 14
         |
| 27 | 26 | xkotopon 21403 |
. . . . . . . . . . . . 13
 
     TopOn      |
| 28 | 22, 25, 27 | syl2anc 693 |
. . . . . . . . . . . 12
     TopOn      |
| 29 | | cnmptk2.a |
. . . . . . . . . . . 12
             |
| 30 | | cnf2 21053 |
. . . . . . . . . . . 12
  TopOn      TopOn 
                         |
| 31 | 19, 28, 29, 30 | syl3anc 1326 |
. . . . . . . . . . 11
             |
| 32 | | eqid 2622 |
. . . . . . . . . . . 12
         |
| 33 | 32 | fmpt 6381 |
. . . . . . . . . . 11
 
   

           |
| 34 | 31, 33 | sylibr 224 |
. . . . . . . . . 10
        |
| 35 | 34 | r19.21bi 2932 |
. . . . . . . . 9
 
       |
| 36 | 35 | adantr 481 |
. . . . . . . 8
           |
| 37 | 32 | fvmpt2 6291 |
. . . . . . . 8
      
            |
| 38 | 18, 36, 37 | syl2anc 693 |
. . . . . . 7
                 |
| 39 | 38 | fveq1d 6193 |
. . . . . 6
                         |
| 40 | | simpr 477 |
. . . . . . 7
       |
| 41 | | cnmptk1p.k |
. . . . . . . . . . 11
 TopOn    |
| 42 | 41 | adantr 481 |
. . . . . . . . . 10
 
 TopOn    |
| 43 | 23 | adantr 481 |
. . . . . . . . . 10
 
 TopOn    |
| 44 | | cnf2 21053 |
. . . . . . . . . 10
  TopOn  TopOn      

       |
| 45 | 42, 43, 35, 44 | syl3anc 1326 |
. . . . . . . . 9
 
         |
| 46 | | eqid 2622 |
. . . . . . . . . 10
     |
| 47 | 46 | fmpt 6381 |
. . . . . . . . 9
 
        |
| 48 | 45, 47 | sylibr 224 |
. . . . . . . 8
 
 
  |
| 49 | 48 | r19.21bi 2932 |
. . . . . . 7
       |
| 50 | 46 | fvmpt2 6291 |
. . . . . . 7
 
         |
| 51 | 40, 49, 50 | syl2anc 693 |
. . . . . 6
             |
| 52 | 39, 51 | eqtrd 2656 |
. . . . 5
                   |
| 53 | 52 | 3impa 1259 |
. . . 4
 

              |
| 54 | 53 | mpt2eq3dva 6719 |
. . 3
  
                  |
| 55 | 17, 54 | syl5eq 2668 |
. 2
  
                  |
| 56 | 19, 41 | cnmpt1st 21471 |
. . . 4
  
       |
| 57 | 19, 41, 56, 29 | cnmpt21f 21475 |
. . 3
  
                   |
| 58 | 19, 41 | cnmpt2nd 21472 |
. . 3
  
       |
| 59 | | eqid 2622 |
. . . . 5
     |
| 60 | | toponuni 20719 |
. . . . . 6
 TopOn 
   |
| 61 | 41, 60 | syl 17 |
. . . . 5
    |
| 62 | | mpt2eq12 6715 |
. . . . 5
     
                       |
| 63 | 59, 61, 62 | sylancr 695 |
. . . 4
                      |
| 64 | | eqid 2622 |
. . . . . 6
   |
| 65 | | eqid 2622 |
. . . . . 6
                     |
| 66 | 64, 65 | xkofvcn 21487 |
. . . . 5
 
𝑛Locally

                    |
| 67 | 20, 25, 66 | syl2anc 693 |
. . . 4
                     |
| 68 | 63, 67 | eqeltrd 2701 |
. . 3
                    |
| 69 | | fveq1 6190 |
. . . 4
                           |
| 70 | | fveq2 6191 |
. . . 4
                           |
| 71 | 69, 70 | sylan9eq 2676 |
. . 3
         
                   |
| 72 | 19, 41, 57, 58, 28, 41, 68, 71 | cnmpt22 21477 |
. 2
  
                   |
| 73 | 55, 72 | eqeltrrd 2702 |
1
  
       |