| Step | Hyp | Ref
| Expression |
| 1 | | xpstopnlem1.j |
. . . . . . . . . 10
 TopOn    |
| 2 | | xpstopnlem1.k |
. . . . . . . . . 10
 TopOn    |
| 3 | | txtopon 21394 |
. . . . . . . . . 10
  TopOn  TopOn  
  TopOn      |
| 4 | 1, 2, 3 | syl2anc 693 |
. . . . . . . . 9
   TopOn 
    |
| 5 | | eqid 2622 |
. . . . . . . . . . . . 13
                   |
| 6 | | 0ex 4790 |
. . . . . . . . . . . . . 14
 |
| 7 | 6 | a1i 11 |
. . . . . . . . . . . . 13

  |
| 8 | 5, 7, 1 | pt1hmeo 21609 |
. . . . . . . . . . . 12
                
      |
| 9 | | hmeocn 21563 |
. . . . . . . . . . . 12
                
                        |
| 10 | | cntop2 21045 |
. . . . . . . . . . . 12
                              |
| 11 | 8, 9, 10 | 3syl 18 |
. . . . . . . . . . 11
      
     |
| 12 | | eqid 2622 |
. . . . . . . . . . . 12
                     |
| 13 | 12 | toptopon 20722 |
. . . . . . . . . . 11
                   TopOn       
      |
| 14 | 11, 13 | sylib 208 |
. . . . . . . . . 10
      
   TopOn       
      |
| 15 | | eqid 2622 |
. . . . . . . . . . . . 13
                   |
| 16 | | 1on 7567 |
. . . . . . . . . . . . . 14
 |
| 17 | 16 | a1i 11 |
. . . . . . . . . . . . 13
   |
| 18 | 15, 17, 2 | pt1hmeo 21609 |
. . . . . . . . . . . 12
                       |
| 19 | | hmeocn 21563 |
. . . . . . . . . . . 12
                                         |
| 20 | | cntop2 21045 |
. . . . . . . . . . . 12
                              |
| 21 | 18, 19, 20 | 3syl 18 |
. . . . . . . . . . 11
            |
| 22 | | eqid 2622 |
. . . . . . . . . . . 12
                     |
| 23 | 22 | toptopon 20722 |
. . . . . . . . . . 11
                   TopOn              |
| 24 | 21, 23 | sylib 208 |
. . . . . . . . . 10
          TopOn              |
| 25 | | txtopon 21394 |
. . . . . . . . . 10
       
   TopOn       
             TopOn                                 TopOn                          |
| 26 | 14, 24, 25 | syl2anc 693 |
. . . . . . . . 9
       
             TopOn                          |
| 27 | | opeq2 4403 |
. . . . . . . . . . . . . . . 16
   
     |
| 28 | 27 | sneqd 4189 |
. . . . . . . . . . . . . . 15
             |
| 29 | | eqid 2622 |
. . . . . . . . . . . . . . 15
               |
| 30 | | snex 4908 |
. . . . . . . . . . . . . . 15
      |
| 31 | 28, 29, 30 | fvmpt 6282 |
. . . . . . . . . . . . . 14
                   |
| 32 | | opeq2 4403 |
. . . . . . . . . . . . . . . 16
         |
| 33 | 32 | sneqd 4189 |
. . . . . . . . . . . . . . 15
             |
| 34 | | eqid 2622 |
. . . . . . . . . . . . . . 15
               |
| 35 | | snex 4908 |
. . . . . . . . . . . . . . 15
      |
| 36 | 33, 34, 35 | fvmpt 6282 |
. . . . . . . . . . . . . 14
                   |
| 37 | | opeq12 4404 |
. . . . . . . . . . . . . 14
                                                                           |
| 38 | 31, 36, 37 | syl2an 494 |
. . . . . . . . . . . . 13
 
                                         |
| 39 | 38 | mpt2eq3ia 6720 |
. . . . . . . . . . . 12
                                             |
| 40 | | toponuni 20719 |
. . . . . . . . . . . . . 14
 TopOn 
   |
| 41 | 1, 40 | syl 17 |
. . . . . . . . . . . . 13
    |
| 42 | | toponuni 20719 |
. . . . . . . . . . . . . 14
 TopOn 
   |
| 43 | 2, 42 | syl 17 |
. . . . . . . . . . . . 13
    |
| 44 | | mpt2eq12 6715 |
. . . . . . . . . . . . 13
  
                                
                             |
| 45 | 41, 43, 44 | syl2anc 693 |
. . . . . . . . . . . 12
  
                            
                             |
| 46 | 39, 45 | syl5eqr 2670 |
. . . . . . . . . . 11
  
                                              |
| 47 | | eqid 2622 |
. . . . . . . . . . . 12
   |
| 48 | | eqid 2622 |
. . . . . . . . . . . 12
   |
| 49 | 47, 48, 8, 18 | txhmeo 21606 |
. . . . . . . . . . 11
   
                                                       |
| 50 | 46, 49 | eqeltrd 2701 |
. . . . . . . . . 10
  
                                          |
| 51 | | hmeocn 21563 |
. . . . . . . . . 10
                                          
                         
                |
| 52 | 50, 51 | syl 17 |
. . . . . . . . 9
  
                                        |
| 53 | | cnf2 21053 |
. . . . . . . . 9
    TopOn 
                      TopOn                                                                                                               |
| 54 | 4, 26, 52, 53 | syl3anc 1326 |
. . . . . . . 8
  
                                            |
| 55 | | eqid 2622 |
. . . . . . . . 9
                                 |
| 56 | 55 | fmpt2 7237 |
. . . . . . . 8
 

                    
               
                                            |
| 57 | 54, 56 | sylibr 224 |
. . . . . . 7
  
                    
                |
| 58 | 57 | r19.21bi 2932 |
. . . . . 6
 
 
            
       
                |
| 59 | 58 | r19.21bi 2932 |
. . . . 5
                 
       
                |
| 60 | 59 | anasss 679 |
. . . 4
 

                      
                |
| 61 | | eqidd 2623 |
. . . 4
  
                                |
| 62 | | vex 3203 |
. . . . . . . . 9
 |
| 63 | | vex 3203 |
. . . . . . . . 9
 |
| 64 | 62, 63 | op1std 7178 |
. . . . . . . 8
          |
| 65 | 62, 63 | op2ndd 7179 |
. . . . . . . 8
          |
| 66 | 64, 65 | uneq12d 3768 |
. . . . . . 7
                  |
| 67 | 66 | mpt2mpt 6752 |
. . . . . 6
                                                            |
| 68 | 67 | eqcomi 2631 |
. . . . 5
                                 
                          |
| 69 | 68 | a1i 11 |
. . . 4
                                                              |
| 70 | 30, 35 | op1std 7178 |
. . . . . 6
                         |
| 71 | 30, 35 | op2ndd 7179 |
. . . . . 6
                         |
| 72 | 70, 71 | uneq12d 3768 |
. . . . 5
                                      |
| 73 | | xpscg 16218 |
. . . . . . 7
 
                   |
| 74 | 62, 63, 73 | mp2an 708 |
. . . . . 6
                 |
| 75 | | df-pr 4180 |
. . . . . 6
                      |
| 76 | 74, 75 | eqtri 2644 |
. . . . 5
                    |
| 77 | 72, 76 | syl6eqr 2674 |
. . . 4
                                 |
| 78 | 60, 61, 69, 77 | fmpt2co 7260 |
. . 3
         
                  
                           |
| 79 | | xpstopnlem1.f |
. . 3
 
         |
| 80 | 78, 79 | syl6reqr 2675 |
. 2
                                              |
| 81 | | eqid 2622 |
. . . . 5
                                 |
| 82 | | eqid 2622 |
. . . . 5
                                 |
| 83 | | eqid 2622 |
. . . . 5
                       |
| 84 | | eqid 2622 |
. . . . 5
                               |
| 85 | | eqid 2622 |
. . . . 5
                               |
| 86 | | eqid 2622 |
. . . . 5
                                                                           |
| 87 | | 2on 7568 |
. . . . . 6
 |
| 88 | 87 | a1i 11 |
. . . . 5
   |
| 89 | | topontop 20718 |
. . . . . . 7
 TopOn 
  |
| 90 | 1, 89 | syl 17 |
. . . . . 6
   |
| 91 | | topontop 20718 |
. . . . . . 7
 TopOn 
  |
| 92 | 2, 91 | syl 17 |
. . . . . 6
   |
| 93 | | xpscf 16226 |
. . . . . 6
           
    |
| 94 | 90, 92, 93 | sylanbrc 698 |
. . . . 5
              |
| 95 | | df2o3 7573 |
. . . . . . 7
    |
| 96 | | df-pr 4180 |
. . . . . . 7
          |
| 97 | 95, 96 | eqtri 2644 |
. . . . . 6
       |
| 98 | 97 | a1i 11 |
. . . . 5
   
     |
| 99 | | 1n0 7575 |
. . . . . . 7
 |
| 100 | 99 | necomi 2848 |
. . . . . 6
 |
| 101 | | disjsn2 4247 |
. . . . . 6

  
     |
| 102 | 100, 101 | mp1i 13 |
. . . . 5
         |
| 103 | 81, 82, 83, 84, 85, 86, 88, 94, 98, 102 | ptunhmeo 21611 |
. . . 4
                                                                                       |
| 104 | | xpscfn 16219 |
. . . . . . . . . 10
  TopOn  TopOn  
         |
| 105 | 1, 2, 104 | syl2anc 693 |
. . . . . . . . 9
          |
| 106 | 6 | prid1 4297 |
. . . . . . . . . 10
    |
| 107 | 106, 95 | eleqtrri 2700 |
. . . . . . . . 9
 |
| 108 | | fnressn 6425 |
. . . . . . . . 9
                                       |
| 109 | 105, 107,
108 | sylancl 694 |
. . . . . . . 8
                              |
| 110 | | xpsc0 16220 |
. . . . . . . . . . 11
 TopOn 
             |
| 111 | 1, 110 | syl 17 |
. . . . . . . . . 10
              |
| 112 | 111 | opeq2d 4409 |
. . . . . . . . 9
                    |
| 113 | 112 | sneqd 4189 |
. . . . . . . 8
                        |
| 114 | 109, 113 | eqtrd 2656 |
. . . . . . 7
                   |
| 115 | 114 | fveq2d 6195 |
. . . . . 6
                           |
| 116 | 115 | unieqd 4446 |
. . . . 5
                             |
| 117 | 16 | elexi 3213 |
. . . . . . . . . . 11
 |
| 118 | 117 | prid2 4298 |
. . . . . . . . . 10
 
  |
| 119 | 118, 95 | eleqtrri 2700 |
. . . . . . . . 9
 |
| 120 | | fnressn 6425 |
. . . . . . . . 9
                                       |
| 121 | 105, 119,
120 | sylancl 694 |
. . . . . . . 8
                              |
| 122 | | xpsc1 16221 |
. . . . . . . . . . 11
 TopOn 
          
  |
| 123 | 2, 122 | syl 17 |
. . . . . . . . . 10
           
  |
| 124 | 123 | opeq2d 4409 |
. . . . . . . . 9
                    |
| 125 | 124 | sneqd 4189 |
. . . . . . . 8
                        |
| 126 | 121, 125 | eqtrd 2656 |
. . . . . . 7
                   |
| 127 | 126 | fveq2d 6195 |
. . . . . 6
                           |
| 128 | 127 | unieqd 4446 |
. . . . 5
                             |
| 129 | | eqidd 2623 |
. . . . 5
       |
| 130 | 116, 128,
129 | mpt2eq123dv 6717 |
. . . 4
                                                                 |
| 131 | 115, 127 | oveq12d 6668 |
. . . . 5
                                                       |
| 132 | 131 | oveq1d 6665 |
. . . 4
                                                       
                             |
| 133 | 103, 130,
132 | 3eltr3d 2715 |
. . 3
                                 
                             |
| 134 | | hmeoco 21575 |
. . 3
   
                                                                                                    
                                                              |
| 135 | 50, 133, 134 | syl2anc 693 |
. 2
         
                  
                                  |
| 136 | 80, 135 | eqeltrd 2701 |
1
                    |