Step | Hyp | Ref
| Expression |
1 | | lring.l |
. . . . . . . 8
 LRing |
2 | | lringring 13340 |
. . . . . . . 8
 LRing   |
3 | 1, 2 | syl 14 |
. . . . . . 7
   |
4 | | lring.x |
. . . . . . . 8
   |
5 | | lring.b |
. . . . . . . 8
       |
6 | 4, 5 | eleqtrd 2256 |
. . . . . . 7
       |
7 | | lring.s |
. . . . . . . 8
     |
8 | | lring.u |
. . . . . . . 8
 Unit    |
9 | 7, 8 | eleqtrd 2256 |
. . . . . . 7
   Unit    |
10 | | eqid 2177 |
. . . . . . . 8
         |
11 | | eqid 2177 |
. . . . . . . 8
Unit  Unit   |
12 | | eqid 2177 |
. . . . . . . 8
/r  /r   |
13 | | eqid 2177 |
. . . . . . . 8
         |
14 | 10, 11, 12, 13 | dvrcan1 13314 |
. . . . . . 7
     
  Unit      /r                 |
15 | 3, 6, 9, 14 | syl3anc 1238 |
. . . . . 6
    /r                 |
16 | 15 | adantr 276 |
. . . . 5
 
  /r      Unit      /r                 |
17 | 3 | adantr 276 |
. . . . . 6
 
  /r      Unit  
  |
18 | | simpr 110 |
. . . . . 6
 
  /r      Unit     /r      Unit    |
19 | 9 | adantr 276 |
. . . . . 6
 
  /r      Unit     Unit    |
20 | 11, 13 | unitmulcl 13287 |
. . . . . 6
    /r      Unit    Unit  
   /r               Unit    |
21 | 17, 18, 19, 20 | syl3anc 1238 |
. . . . 5
 
  /r      Unit      /r               Unit    |
22 | 16, 21 | eqeltrrd 2255 |
. . . 4
 
  /r      Unit  
Unit    |
23 | 8 | adantr 276 |
. . . 4
 
  /r      Unit  
Unit    |
24 | 22, 23 | eleqtrrd 2257 |
. . 3
 
  /r      Unit  
  |
25 | 24 | orcd 733 |
. 2
 
  /r      Unit   
   |
26 | | lring.y |
. . . . . . . 8
   |
27 | 26, 5 | eleqtrd 2256 |
. . . . . . 7
       |
28 | 10, 11, 12, 13 | dvrcan1 13314 |
. . . . . . 7
     
  Unit      /r                 |
29 | 3, 27, 9, 28 | syl3anc 1238 |
. . . . . 6
    /r                 |
30 | 29 | adantr 276 |
. . . . 5
 
  /r      Unit      /r                 |
31 | 3 | adantr 276 |
. . . . . 6
 
  /r      Unit  
  |
32 | | simpr 110 |
. . . . . 6
 
  /r      Unit     /r      Unit    |
33 | 9 | adantr 276 |
. . . . . 6
 
  /r      Unit     Unit    |
34 | 11, 13 | unitmulcl 13287 |
. . . . . 6
    /r      Unit    Unit  
   /r               Unit    |
35 | 31, 32, 33, 34 | syl3anc 1238 |
. . . . 5
 
  /r      Unit      /r               Unit    |
36 | 30, 35 | eqeltrrd 2255 |
. . . 4
 
  /r      Unit  
Unit    |
37 | 8 | adantr 276 |
. . . 4
 
  /r      Unit  
Unit    |
38 | 36, 37 | eleqtrrd 2257 |
. . 3
 
  /r      Unit  
  |
39 | 38 | olcd 734 |
. 2
 
  /r      Unit   
   |
40 | | eqid 2177 |
. . . . . 6
       |
41 | 10, 11, 40, 12 | dvrdir 13317 |
. . . . 5
  
       
  Unit             /r         /r             /r         |
42 | 3, 6, 27, 9, 41 | syl13anc 1240 |
. . . 4
          /r         /r             /r         |
43 | | lring.p |
. . . . . . 7
      |
44 | 43 | eqcomd 2183 |
. . . . . 6
     |
45 | 44 | oveqd 5894 |
. . . . 5
            |
46 | 3 | ringgrpd 13193 |
. . . . . . 7
   |
47 | 10, 40, 46, 6, 27 | grpcld 12895 |
. . . . . 6
              |
48 | | eqid 2177 |
. . . . . . 7
         |
49 | 10, 11, 12, 48 | dvreq1 13316 |
. . . . . 6
            
  Unit             /r         
  
         |
50 | 3, 47, 9, 49 | syl3anc 1238 |
. . . . 5
           /r         
  
         |
51 | 45, 50 | mpbird 167 |
. . . 4
          /r            |
52 | 42, 51 | eqtr3d 2212 |
. . 3
    /r             /r             |
53 | | oveq2 5885 |
. . . . . 6
   /r         /r               /r             /r         |
54 | 53 | eqeq1d 2186 |
. . . . 5
   /r          /r                   /r             /r              |
55 | | eleq1 2240 |
. . . . . 6
   /r       Unit    /r      Unit     |
56 | 55 | orbi2d 790 |
. . . . 5
   /r          /r      Unit  Unit      /r      Unit    /r      Unit      |
57 | 54, 56 | imbi12d 234 |
. . . 4
   /r           /r                   /r      Unit  Unit   
    /r             /r              /r      Unit    /r      Unit       |
58 | | oveq1 5884 |
. . . . . . . 8
   /r                /r              |
59 | 58 | eqeq1d 2186 |
. . . . . . 7
   /r                     /r                   |
60 | | eleq1 2240 |
. . . . . . . 8
   /r       Unit    /r      Unit     |
61 | 60 | orbi1d 791 |
. . . . . . 7
   /r        Unit  Unit      /r      Unit  Unit      |
62 | 59, 61 | imbi12d 234 |
. . . . . 6
   /r                  
 Unit 
Unit        /r               
   /r      Unit  Unit       |
63 | 62 | ralbidv 2477 |
. . . . 5
   /r                        
 Unit 
Unit    
         /r               
   /r      Unit  Unit       |
64 | 10, 40, 48, 11 | islring 13338 |
. . . . . . 7
 LRing  NzRing 
                      
 Unit 
Unit       |
65 | 1, 64 | sylib 122 |
. . . . . 6
  NzRing 
                      
 Unit 
Unit       |
66 | 65 | simprd 114 |
. . . . 5
       
                  Unit  Unit      |
67 | 10, 11, 12 | dvrcl 13309 |
. . . . . 6
     
  Unit     /r            |
68 | 3, 6, 9, 67 | syl3anc 1238 |
. . . . 5
   /r            |
69 | 63, 66, 68 | rspcdva 2848 |
. . . 4
           /r               
   /r      Unit  Unit      |
70 | 10, 11, 12 | dvrcl 13309 |
. . . . 5
     
  Unit     /r            |
71 | 3, 27, 9, 70 | syl3anc 1238 |
. . . 4
   /r            |
72 | 57, 69, 71 | rspcdva 2848 |
. . 3
     /r             /r              /r      Unit    /r      Unit      |
73 | 52, 72 | mpd 13 |
. 2
    /r      Unit    /r      Unit     |
74 | 25, 39, 73 | mpjaodan 798 |
1
 
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