| Step | Hyp | Ref
| Expression |
| 1 | | iotaex 5868 |
. . . . . 6
        

      |
| 2 | 1 | a1i 11 |
. . . . 5
   
         

       |
| 3 | | lgsdchr.x |
. . . . . 6
    
    
        |
| 4 | 3 | a1i 11 |
. . . . 5
 
          

        |
| 5 | | nnnn0 11299 |
. . . . . . . . 9
   |
| 6 | 5 | adantr 481 |
. . . . . . . 8
 
   |
| 7 | | lgsdchr.z |
. . . . . . . . 9
ℤ/nℤ   |
| 8 | | lgsdchr.b |
. . . . . . . . 9
     |
| 9 | | lgsdchr.l |
. . . . . . . . 9
 RHom   |
| 10 | 7, 8, 9 | znzrhfo 19896 |
. . . . . . . 8

      |
| 11 | 6, 10 | syl 17 |
. . . . . . 7
 
       |
| 12 | | foelrn 6378 |
. . . . . . 7
     

       |
| 13 | 11, 12 | sylan 488 |
. . . . . 6
   
        |
| 14 | | lgsdchr.g |
. . . . . . . . . . 11
DChr   |
| 15 | | lgsdchr.d |
. . . . . . . . . . 11
     |
| 16 | 14, 7, 15, 8, 9, 3 | lgsdchrval 25079 |
. . . . . . . . . 10
   

              |
| 17 | | simpr 477 |
. . . . . . . . . . . 12
   

  |
| 18 | | nnz 11399 |
. . . . . . . . . . . . 13
   |
| 19 | 18 | ad2antrr 762 |
. . . . . . . . . . . 12
   

  |
| 20 | | lgscl 25036 |
. . . . . . . . . . . 12
 
       |
| 21 | 17, 19, 20 | syl2anc 693 |
. . . . . . . . . . 11
   

      |
| 22 | 21 | zred 11482 |
. . . . . . . . . 10
   

      |
| 23 | 16, 22 | eqeltrd 2701 |
. . . . . . . . 9
   

          |
| 24 | | fveq2 6191 |
. . . . . . . . . 10
                   |
| 25 | 24 | eleq1d 2686 |
. . . . . . . . 9
         
           |
| 26 | 23, 25 | syl5ibrcom 237 |
. . . . . . . 8
   

            |
| 27 | 26 | rexlimdva 3031 |
. . . . . . 7
 
              |
| 28 | 27 | imp 445 |
. . . . . 6
   
     
      |
| 29 | 13, 28 | syldan 487 |
. . . . 5
   
       |
| 30 | 2, 4, 29 | fmpt2d 6393 |
. . . 4
 
       |
| 31 | | ax-resscn 9993 |
. . . 4
 |
| 32 | | fss 6056 |
. . . 4
             |
| 33 | 30, 31, 32 | sylancl 694 |
. . 3
 
       |
| 34 | | eqid 2622 |
. . . . . 6
Unit  Unit   |
| 35 | 8, 34 | unitss 18660 |
. . . . 5
Unit   |
| 36 | | foelrn 6378 |
. . . . . . . . 9
     

       |
| 37 | 11, 36 | sylan 488 |
. . . . . . . 8
   
        |
| 38 | 13, 37 | anim12dan 882 |
. . . . . . 7
   

                |
| 39 | | reeanv 3107 |
. . . . . . . . 9
  
    
    
 
    
       |
| 40 | 17 | adantrr 753 |
. . . . . . . . . . . . 13
   
     |
| 41 | | simprr 796 |
. . . . . . . . . . . . 13
   
     |
| 42 | 6 | adantr 481 |
. . . . . . . . . . . . 13
   
  
  |
| 43 | | lgsdirnn0 25069 |
. . . . . . . . . . . . 13
 
                   |
| 44 | 40, 41, 42, 43 | syl3anc 1326 |
. . . . . . . . . . . 12
   
                     |
| 45 | 7 | zncrng 19893 |
. . . . . . . . . . . . . . . . . . 19

  |
| 46 | 6, 45 | syl 17 |
. . . . . . . . . . . . . . . . . 18
 
   |
| 47 | | crngring 18558 |
. . . . . . . . . . . . . . . . . 18

  |
| 48 | 46, 47 | syl 17 |
. . . . . . . . . . . . . . . . 17
 
   |
| 49 | 48 | adantr 481 |
. . . . . . . . . . . . . . . 16
   
  
  |
| 50 | 9 | zrhrhm 19860 |
. . . . . . . . . . . . . . . 16

ℤring RingHom    |
| 51 | 49, 50 | syl 17 |
. . . . . . . . . . . . . . 15
   
  
ℤring
RingHom    |
| 52 | | zringbas 19824 |
. . . . . . . . . . . . . . . 16
  ℤring |
| 53 | | zringmulr 19827 |
. . . . . . . . . . . . . . . 16
  ℤring |
| 54 | | eqid 2622 |
. . . . . . . . . . . . . . . 16
         |
| 55 | 52, 53, 54 | rhmmul 18727 |
. . . . . . . . . . . . . . 15
  ℤring
RingHom 
                         |
| 56 | 51, 40, 41, 55 | syl3anc 1326 |
. . . . . . . . . . . . . 14
   
                           |
| 57 | 56 | fveq2d 6195 |
. . . . . . . . . . . . 13
   
                                   |
| 58 | | zmulcl 11426 |
. . . . . . . . . . . . . 14
 
     |
| 59 | 14, 7, 15, 8, 9, 3 | lgsdchrval 25079 |
. . . . . . . . . . . . . 14
   
                     |
| 60 | 58, 59 | sylan2 491 |
. . . . . . . . . . . . 13
   
                     |
| 61 | 57, 60 | eqtr3d 2658 |
. . . . . . . . . . . 12
   
                               |
| 62 | 16 | adantrr 753 |
. . . . . . . . . . . . 13
   
                 |
| 63 | 14, 7, 15, 8, 9, 3 | lgsdchrval 25079 |
. . . . . . . . . . . . . 14
   

              |
| 64 | 63 | adantrl 752 |
. . . . . . . . . . . . 13
   
                 |
| 65 | 62, 64 | oveq12d 6668 |
. . . . . . . . . . . 12
   
                                 |
| 66 | 44, 61, 65 | 3eqtr4d 2666 |
. . . . . . . . . . 11
   
                                           |
| 67 | | oveq12 6659 |
. . . . . . . . . . . . 13
     
                               |
| 68 | 67 | fveq2d 6195 |
. . . . . . . . . . . 12
     
                                       |
| 69 | | fveq2 6191 |
. . . . . . . . . . . . 13
                   |
| 70 | 24, 69 | oveqan12d 6669 |
. . . . . . . . . . . 12
     
                                   |
| 71 | 68, 70 | eqeq12d 2637 |
. . . . . . . . . . 11
     
                                                                     |
| 72 | 66, 71 | syl5ibrcom 237 |
. . . . . . . . . 10
   
        
    
                         |
| 73 | 72 | rexlimdvva 3038 |
. . . . . . . . 9
 
        
    
                         |
| 74 | 39, 73 | syl5bir 233 |
. . . . . . . 8
 
        
                              |
| 75 | 74 | imp 445 |
. . . . . . 7
   
 
    
                              |
| 76 | 38, 75 | syldan 487 |
. . . . . 6
   

                          |
| 77 | 76 | ralrimivva 2971 |
. . . . 5
 
  
                        |
| 78 | | ssralv 3666 |
. . . . . . 7
 Unit                           Unit                            |
| 79 | 78 | ralimdv 2963 |
. . . . . 6
 Unit                            
Unit                            |
| 80 | | ssralv 3666 |
. . . . . 6
 Unit     Unit                         
Unit    Unit                            |
| 81 | 79, 80 | syld 47 |
. . . . 5
 Unit                            Unit    Unit                            |
| 82 | 35, 77, 81 | mpsyl 68 |
. . . 4
 
  Unit    Unit                           |
| 83 | | 1z 11407 |
. . . . . 6
 |
| 84 | 14, 7, 15, 8, 9, 3 | lgsdchrval 25079 |
. . . . . 6
   

              |
| 85 | 83, 84 | mpan2 707 |
. . . . 5
 
               |
| 86 | | eqid 2622 |
. . . . . . . 8
         |
| 87 | 9, 86 | zrh1 19861 |
. . . . . . 7

          |
| 88 | 48, 87 | syl 17 |
. . . . . 6
 
           |
| 89 | 88 | fveq2d 6195 |
. . . . 5
 
                   |
| 90 | 18 | adantr 481 |
. . . . . 6
 
   |
| 91 | | 1lgs 25065 |
. . . . . 6
       |
| 92 | 90, 91 | syl 17 |
. . . . 5
 
       |
| 93 | 85, 89, 92 | 3eqtr3d 2664 |
. . . 4
 
           |
| 94 | | lgsne0 25060 |
. . . . . . . . . . . 12
 
           |
| 95 | 17, 19, 94 | syl2anc 693 |
. . . . . . . . . . 11
   

     
    |
| 96 | 95 | biimpd 219 |
. . . . . . . . . 10
   

          |
| 97 | 16 | neeq1d 2853 |
. . . . . . . . . 10
   

        
       |
| 98 | 7, 34, 9 | znunit 19912 |
. . . . . . . . . . 11
 
      Unit 
     |
| 99 | 6, 98 | sylan 488 |
. . . . . . . . . 10
   

     Unit       |
| 100 | 96, 97, 99 | 3imtr4d 283 |
. . . . . . . . 9
   

             Unit     |
| 101 | 24 | neeq1d 2853 |
. . . . . . . . . 10
                     |
| 102 | | eleq1 2689 |
. . . . . . . . . 10
      Unit 
    Unit     |
| 103 | 101, 102 | imbi12d 334 |
. . . . . . . . 9
           Unit  
        
    Unit      |
| 104 | 100, 103 | syl5ibrcom 237 |
. . . . . . . 8
   

         
Unit      |
| 105 | 104 | rexlimdva 3031 |
. . . . . . 7
 
           
Unit      |
| 106 | 105 | imp 445 |
. . . . . 6
   
     
    
Unit     |
| 107 | 13, 106 | syldan 487 |
. . . . 5
   
     
Unit     |
| 108 | 107 | ralrimiva 2966 |
. . . 4
 
       Unit     |
| 109 | 82, 93, 108 | 3jca 1242 |
. . 3
 
   Unit   
Unit                        
             
Unit      |
| 110 | | simpl 473 |
. . . 4
 
   |
| 111 | 14, 7, 8, 34, 110, 15 | dchrelbas3 24963 |
. . 3
 
        
Unit    Unit                                 
    
Unit        |
| 112 | 33, 109, 111 | mpbir2and 957 |
. 2
 
   |
| 113 | 112, 30 | jca 554 |
1
 
         |