| Step | Hyp | Ref
| Expression |
| 1 | | dvadd.bg |
. . . 4
       |
| 2 | | eqid 2196 |
. . . . 5
 ↾t   ↾t   |
| 3 | | dvaddcntop.j |
. . . . 5
      |
| 4 | | eqid 2196 |
. . . . 5
  #                   #                  |
| 5 | | dvaddbr.s |
. . . . 5

  |
| 6 | | dvaddxx.g |
. . . . 5
       |
| 7 | | dvadd.x |
. . . . 5

  |
| 8 | 2, 3, 4, 5, 6, 7 | eldvap 15002 |
. . . 4
            ↾t         #
                lim      |
| 9 | 1, 8 | mpbid 147 |
. . 3
       ↾t         #
                lim     |
| 10 | 9 | simpld 112 |
. 2
      ↾t        |
| 11 | | dvadd.f |
. . . . 5
       |
| 12 | 7, 5 | sstrd 3194 |
. . . . 5

  |
| 13 | 3 | cntoptopon 14852 |
. . . . . . . . 9
TopOn   |
| 14 | | resttopon 14491 |
. . . . . . . . 9
  TopOn 

 ↾t  TopOn    |
| 15 | 13, 5, 14 | sylancr 414 |
. . . . . . . 8
 
↾t  TopOn    |
| 16 | | topontop 14334 |
. . . . . . . 8
  ↾t  TopOn   ↾t    |
| 17 | 15, 16 | syl 14 |
. . . . . . 7
 
↾t    |
| 18 | | toponuni 14335 |
. . . . . . . . 9
  ↾t  TopOn    ↾t    |
| 19 | 15, 18 | syl 14 |
. . . . . . . 8
   ↾t    |
| 20 | 7, 19 | sseqtrd 3222 |
. . . . . . 7

  ↾t    |
| 21 | | eqid 2196 |
. . . . . . . 8
  ↾t   
↾t   |
| 22 | 21 | ntrss2 14441 |
. . . . . . 7
  
↾t 
  ↾t        ↾t        |
| 23 | 17, 20, 22 | syl2anc 411 |
. . . . . 6
      ↾t        |
| 24 | | dvadd.bf |
. . . . . . . 8
       |
| 25 | | eqid 2196 |
. . . . . . . . 9
  #                   #                  |
| 26 | 2, 3, 25, 5, 11, 7 | eldvap 15002 |
. . . . . . . 8
            ↾t         #
                lim      |
| 27 | 24, 26 | mpbid 147 |
. . . . . . 7
       ↾t         #
                lim     |
| 28 | 27 | simpld 112 |
. . . . . 6
      ↾t        |
| 29 | 23, 28 | sseldd 3185 |
. . . . 5
   |
| 30 | 11, 12, 29 | dvlemap 15000 |
. . . 4
 
 #                   |
| 31 | 6, 12, 29 | dvlemap 15000 |
. . . 4
 
 #                   |
| 32 | | ssidd 3205 |
. . . 4

  |
| 33 | | txtopon 14582 |
. . . . . 6
  TopOn 
TopOn  
  TopOn      |
| 34 | 13, 13, 33 | mp2an 426 |
. . . . 5
  TopOn     |
| 35 | 34 | toponrestid 14341 |
. . . 4
    
↾t     |
| 36 | 27 | simprd 114 |
. . . 4
   
# 
               lim    |
| 37 | 9 | simprd 114 |
. . . 4
   
# 
               lim    |
| 38 | 3 | addcncntop 14882 |
. . . . 5
     |
| 39 | 5, 11, 7 | dvcl 15003 |
. . . . . . 7
 
    
  |
| 40 | 24, 39 | mpdan 421 |
. . . . . 6
   |
| 41 | 5, 6, 7 | dvcl 15003 |
. . . . . . 7
 
    
  |
| 42 | 1, 41 | mpdan 421 |
. . . . . 6
   |
| 43 | 40, 42 | opelxpd 4697 |
. . . . 5
        |
| 44 | 34 | toponunii 14337 |
. . . . . 6
      |
| 45 | 44 | cncnpi 14548 |
. . . . 5
      
                 |
| 46 | 38, 43, 45 | sylancr 414 |
. . . 4
    
         |
| 47 | 30, 31, 32, 32, 3, 35, 36, 37, 46 | limccnp2cntop 14997 |
. . 3
     
# 
                               lim    |
| 48 | | elrabi 2917 |
. . . . . . . . . . 11
  #    |
| 49 | 48 | adantl 277 |
. . . . . . . . . 10
 
 #     |
| 50 | 11 | ffnd 5411 |
. . . . . . . . . . . 12
   |
| 51 | 50 | adantr 276 |
. . . . . . . . . . 11
 
 #  
  |
| 52 | 6 | ffnd 5411 |
. . . . . . . . . . . 12
   |
| 53 | 52 | adantr 276 |
. . . . . . . . . . 11
 
 #  
  |
| 54 | | cnex 8020 |
. . . . . . . . . . . . 13
 |
| 55 | | ssexg 4173 |
. . . . . . . . . . . . 13
 
   |
| 56 | 12, 54, 55 | sylancl 413 |
. . . . . . . . . . . 12
   |
| 57 | 56 | adantr 276 |
. . . . . . . . . . 11
 
 #  
  |
| 58 | | inidm 3373 |
. . . . . . . . . . 11
   |
| 59 | | eqidd 2197 |
. . . . . . . . . . 11
    #
 
           |
| 60 | | eqidd 2197 |
. . . . . . . . . . 11
    #
 
           |
| 61 | 11 | adantr 276 |
. . . . . . . . . . . . 13
 
 #         |
| 62 | 61 | ffvelcdmda 5700 |
. . . . . . . . . . . 12
    #
 
       |
| 63 | 6 | adantr 276 |
. . . . . . . . . . . . 13
 
 #         |
| 64 | 63 | ffvelcdmda 5700 |
. . . . . . . . . . . 12
    #
 
       |
| 65 | 62, 64 | addcld 8063 |
. . . . . . . . . . 11
    #
 
             |
| 66 | 51, 53, 57, 57, 58, 59, 60, 65 | ofvalg 6149 |
. . . . . . . . . 10
    #
 
                    |
| 67 | 49, 66 | mpdan 421 |
. . . . . . . . 9
 
 #     
                |
| 68 | | eqidd 2197 |
. . . . . . . . . . 11
    #
 
           |
| 69 | | eqidd 2197 |
. . . . . . . . . . 11
    #
 
           |
| 70 | 61 | ffvelcdmda 5700 |
. . . . . . . . . . . 12
    #
 
       |
| 71 | 63 | ffvelcdmda 5700 |
. . . . . . . . . . . 12
    #
 
       |
| 72 | 70, 71 | addcld 8063 |
. . . . . . . . . . 11
    #
 
             |
| 73 | 51, 53, 57, 57, 58, 68, 69, 72 | ofvalg 6149 |
. . . . . . . . . 10
    #
 
                    |
| 74 | 29, 73 | mpidan 423 |
. . . . . . . . 9
 
 #     
                |
| 75 | 67, 74 | oveq12d 5943 |
. . . . . . . 8
 
 #                                           |
| 76 | | ffvelcdm 5698 |
. . . . . . . . . 10
     
       |
| 77 | 11, 48, 76 | syl2an 289 |
. . . . . . . . 9
 
 #         |
| 78 | 63, 49 | ffvelcdmd 5701 |
. . . . . . . . 9
 
 #         |
| 79 | 11, 29 | ffvelcdmd 5701 |
. . . . . . . . . 10
       |
| 80 | 79 | adantr 276 |
. . . . . . . . 9
 
 #         |
| 81 | 6, 29 | ffvelcdmd 5701 |
. . . . . . . . . 10
       |
| 82 | 81 | adantr 276 |
. . . . . . . . 9
 
 #         |
| 83 | 77, 78, 80, 82 | addsub4d 8401 |
. . . . . . . 8
 
 #                                                 |
| 84 | 75, 83 | eqtrd 2229 |
. . . . . . 7
 
 #                                           |
| 85 | 84 | oveq1d 5940 |
. . . . . 6
 
 #                                                   |
| 86 | 61, 49 | ffvelcdmd 5701 |
. . . . . . . 8
 
 #         |
| 87 | 86, 80 | subcld 8354 |
. . . . . . 7
 
 #               |
| 88 | 78, 82 | subcld 8354 |
. . . . . . 7
 
 #               |
| 89 | | ssrab2 3269 |
. . . . . . . . . 10

# 
 |
| 90 | 89, 12 | sstrid 3195 |
. . . . . . . . 9
  #
   |
| 91 | 90 | sselda 3184 |
. . . . . . . 8
 
 #     |
| 92 | 12, 29 | sseldd 3185 |
. . . . . . . . 9
   |
| 93 | 92 | adantr 276 |
. . . . . . . 8
 
 #  
  |
| 94 | 91, 93 | subcld 8354 |
. . . . . . 7
 
 #       |
| 95 | | breq1 4037 |
. . . . . . . . . . 11
  #
#    |
| 96 | 95 | elrab 2920 |
. . . . . . . . . 10
  #   #
   |
| 97 | 96 | simprbi 275 |
. . . . . . . . 9
  #  #   |
| 98 | 97 | adantl 277 |
. . . . . . . 8
 
 #   #   |
| 99 | 91, 93, 98 | subap0d 8688 |
. . . . . . 7
 
 #     #   |
| 100 | 87, 88, 94, 99 | divdirapd 8873 |
. . . . . 6
 
 #                                                             |
| 101 | 85, 100 | eqtrd 2229 |
. . . . 5
 
 #                                                       |
| 102 | 101 | mpteq2dva 4124 |
. . . 4
   #      
                  #                                   |
| 103 | 102 | oveq1d 5940 |
. . 3
    #
                      lim    
# 
                               lim    |
| 104 | 47, 103 | eleqtrrd 2276 |
. 2
     
# 
    
                lim    |
| 105 | | eqid 2196 |
. . 3
  #                         #      
                 |
| 106 | | addcl 8021 |
. . . . 5
 
     |
| 107 | 106 | adantl 277 |
. . . 4
 
       |
| 108 | 107, 11, 6, 56, 56, 58 | off 6152 |
. . 3
          |
| 109 | 2, 3, 105, 5, 108, 7 | eldvap 15002 |
. 2
     
    
      ↾t      
    #
                      lim      |
| 110 | 10, 104, 109 | mpbir2and 946 |
1
   
        |