| Step | Hyp | Ref
| Expression |
| 1 | | gsumclfi.a |
. . . 4
   |
| 2 | | isfinite4im 11209 |
. . . 4
    ♯     |
| 3 | 1, 2 | syl 14 |
. . 3
    ♯     |
| 4 | | bren 7020 |
. . 3
    ♯         ♯       |
| 5 | 3, 4 | sylib 122 |
. 2
       ♯       |
| 6 | | gsumf1o.h |
. . . . . . . . . 10
       |
| 7 | | f1ocnv 5647 |
. . . . . . . . . 10
    
       |
| 8 | 6, 7 | syl 14 |
. . . . . . . . 9
        |
| 9 | | f1oeng 7033 |
. . . . . . . . 9
          |
| 10 | 1, 8, 9 | syl2anc 415 |
. . . . . . . 8
   |
| 11 | 10 | ensymd 7060 |
. . . . . . 7
   |
| 12 | | enfii 7166 |
. . . . . . 7
  
  |
| 13 | 1, 11, 12 | syl2anc 415 |
. . . . . 6
   |
| 14 | | isfinite4im 11209 |
. . . . . 6
    ♯     |
| 15 | 13, 14 | syl 14 |
. . . . 5
    ♯     |
| 16 | | bren 7020 |
. . . . 5
    ♯         ♯       |
| 17 | 15, 16 | sylib 122 |
. . . 4
       ♯       |
| 18 | 17 | adantr 276 |
. . 3
 
     ♯            ♯       |
| 19 | | gsumclfi.b |
. . . . . 6
     |
| 20 | | gsumclfi.z |
. . . . . 6
     |
| 21 | | gsumclfi.g |
. . . . . . 7
 CMnd |
| 22 | 21 | ad2antrr 492 |
. . . . . 6
        ♯           ♯      CMnd |
| 23 | | 1zzd 9650 |
. . . . . 6
        ♯           ♯        |
| 24 | 1 | ad2antrr 492 |
. . . . . . . 8
        ♯           ♯        |
| 25 | | hashcl 11198 |
. . . . . . . 8
 ♯    |
| 26 | 24, 25 | syl 14 |
. . . . . . 7
        ♯           ♯      ♯    |
| 27 | 26 | nn0zd 9745 |
. . . . . 6
        ♯           ♯      ♯    |
| 28 | | gsumclfi.f |
. . . . . . . 8
       |
| 29 | 28 | ad2antrr 492 |
. . . . . . 7
        ♯           ♯            |
| 30 | | f1of 5634 |
. . . . . . . 8
      ♯          ♯       |
| 31 | 30 | ad2antlr 493 |
. . . . . . 7
        ♯           ♯           ♯       |
| 32 | 29, 31 | fcod 5548 |
. . . . . 6
        ♯           ♯      
      ♯       |
| 33 | | f1ocnv 5647 |
. . . . . . . 8
      ♯             ♯     |
| 34 | 33 | ad2antlr 493 |
. . . . . . 7
        ♯           ♯              ♯     |
| 35 | 6 | ad2antrr 492 |
. . . . . . . 8
        ♯           ♯            |
| 36 | | simpr 110 |
. . . . . . . . 9
        ♯           ♯           ♯       |
| 37 | 10 | ad2antrr 492 |
. . . . . . . . . . . 12
        ♯           ♯        |
| 38 | 13 | ad2antrr 492 |
. . . . . . . . . . . . 13
        ♯           ♯        |
| 39 | | hashen 11201 |
. . . . . . . . . . . . 13
 
  ♯  ♯ 
   |
| 40 | 24, 38, 39 | syl2anc 415 |
. . . . . . . . . . . 12
        ♯           ♯       ♯  ♯     |
| 41 | 37, 40 | mpbird 167 |
. . . . . . . . . . 11
        ♯           ♯      ♯  ♯    |
| 42 | 41 | oveq2d 6091 |
. . . . . . . . . 10
        ♯           ♯         ♯      ♯     |
| 43 | 42 | f1oeq2d 5630 |
. . . . . . . . 9
        ♯           ♯            ♯          ♯        |
| 44 | 36, 43 | mpbird 167 |
. . . . . . . 8
        ♯           ♯           ♯       |
| 45 | | f1oco 5657 |
. . . . . . . 8
           ♯      
      ♯       |
| 46 | 35, 44, 45 | syl2anc 415 |
. . . . . . 7
        ♯           ♯      
      ♯       |
| 47 | | f1oco 5657 |
. . . . . . 7
          ♯   
      ♯       

       ♯        ♯     |
| 48 | 34, 46, 47 | syl2anc 415 |
. . . . . 6
        ♯           ♯       

       ♯        ♯     |
| 49 | 19, 20, 22, 23, 27, 32, 48 | gzsumreidx 14118 |
. . . . 5
        ♯           ♯       gz     gz     

      |
| 50 | | coass 5301 |
. . . . . . . 8
                   |
| 51 | | f1of 5634 |
. . . . . . . . . . . . 13
         ♯           ♯     |
| 52 | 34, 51 | syl 14 |
. . . . . . . . . . . 12
        ♯           ♯              ♯     |
| 53 | 32, 52 | fcod 5548 |
. . . . . . . . . . 11
        ♯           ♯                 |
| 54 | 53 | ffnd 5529 |
. . . . . . . . . 10
        ♯           ♯             |
| 55 | 29 | ffnd 5529 |
. . . . . . . . . 10
        ♯           ♯        |
| 56 | | simpr 110 |
. . . . . . . . . . . . . 14
 
     ♯           ♯       |
| 57 | 56 | ad2antrr 492 |
. . . . . . . . . . . . 13
         ♯           ♯            ♯       |
| 58 | 57, 33, 51 | 3syl 17 |
. . . . . . . . . . . 12
         ♯           ♯               ♯     |
| 59 | | fvco3 5770 |
. . . . . . . . . . . 12
          ♯  
                       |
| 60 | 58, 59 | sylancom 424 |
. . . . . . . . . . 11
         ♯           ♯                             |
| 61 | 57, 30 | syl 14 |
. . . . . . . . . . . 12
         ♯           ♯            ♯       |
| 62 | 52 | ffvelcdmda 5834 |
. . . . . . . . . . . 12
         ♯           ♯               ♯     |
| 63 | | fvco3 5770 |
. . . . . . . . . . . 12
       ♯             ♯                              |
| 64 | 61, 62, 63 | syl2anc 415 |
. . . . . . . . . . 11
         ♯           ♯                                 |
| 65 | | f1ocnvfv2 5974 |
. . . . . . . . . . . . 13
       ♯                 |
| 66 | 57, 65 | sylancom 424 |
. . . . . . . . . . . 12
         ♯           ♯                  |
| 67 | 66 | fveq2d 5694 |
. . . . . . . . . . 11
         ♯           ♯                          |
| 68 | 60, 64, 67 | 3eqtrd 2275 |
. . . . . . . . . 10
         ♯           ♯                      |
| 69 | 54, 55, 68 | eqfnfvd 5800 |
. . . . . . . . 9
        ♯           ♯             |
| 70 | 69 | coeq1d 4936 |
. . . . . . . 8
        ♯           ♯            
        |
| 71 | 50, 70 | eqtr3id 2285 |
. . . . . . 7
        ♯           ♯                     |
| 72 | | coass 5301 |
. . . . . . 7
     
   |
| 73 | 71, 72 | eqtr4di 2289 |
. . . . . 6
        ♯           ♯                     |
| 74 | 73 | oveq2d 6091 |
. . . . 5
        ♯           ♯       gz     

     gz        |
| 75 | 49, 74 | eqtrd 2271 |
. . . 4
        ♯           ♯       gz     gz        |
| 76 | 21 | adantr 276 |
. . . . . 6
 
     ♯      CMnd |
| 77 | 28 | adantr 276 |
. . . . . 6
 
     ♯            |
| 78 | 1 | adantr 276 |
. . . . . 6
 
     ♯        |
| 79 | 19, 76, 77, 78, 56 | gsumvalfi 14129 |
. . . . 5
 
     ♯       g   gz      |
| 80 | 79 | adantr 276 |
. . . 4
        ♯           ♯       g   gz      |
| 81 | | f1of 5634 |
. . . . . . . 8
    
      |
| 82 | 6, 81 | syl 14 |
. . . . . . 7
       |
| 83 | 82 | ad2antrr 492 |
. . . . . 6
        ♯           ♯            |
| 84 | 29, 83 | fcod 5548 |
. . . . 5
        ♯           ♯      
       |
| 85 | 19, 22, 84, 38, 36 | gsumvalfi 14129 |
. . . 4
        ♯           ♯       g     gz        |
| 86 | 75, 80, 85 | 3eqtr4d 2281 |
. . 3
        ♯           ♯       g   g      |
| 87 | 18, 86 | exlimddv 1954 |
. 2
 
     ♯       g   g      |
| 88 | 5, 87 | exlimddv 1954 |
1
  g   g      |