| Step | Hyp | Ref
| Expression |
| 1 | | simpl1 1064 |
. . 3
     
 
           
   |
| 2 | | simpl3 1066 |
. . 3
     
 
           
   |
| 3 | | dihord5apre.b |
. . . 4
     |
| 4 | | dihord5apre.l |
. . . 4
     |
| 5 | | dihord5apre.j |
. . . 4
     |
| 6 | | dihord5apre.m |
. . . 4
     |
| 7 | | dihord5apre.a |
. . . 4
     |
| 8 | | dihord5apre.h |
. . . 4
     |
| 9 | 3, 4, 5, 6, 7, 8 | lhpmcvr2 35310 |
. . 3
       

 
     |
| 10 | 1, 2, 9 | syl2anc 693 |
. 2
     
 
           
 
      |
| 11 | | simp11l 1172 |
. . . . . . . 8
     
 
         
 
  
   
  |
| 12 | | hllat 34650 |
. . . . . . . 8
   |
| 13 | 11, 12 | syl 17 |
. . . . . . 7
     
 
         
 
  
   
  |
| 14 | | simp12l 1174 |
. . . . . . 7
     
 
         
 
  
   
  |
| 15 | | simp3ll 1132 |
. . . . . . . . 9
     
 
         
 
  
   
  |
| 16 | 3, 7 | atbase 34576 |
. . . . . . . . 9
   |
| 17 | 15, 16 | syl 17 |
. . . . . . . 8
     
 
         
 
  
   
  |
| 18 | 3, 5 | latjcl 17051 |
. . . . . . . 8
 
     |
| 19 | 13, 17, 14, 18 | syl3anc 1326 |
. . . . . . 7
     
 
         
 
  
   
    |
| 20 | | simp13l 1176 |
. . . . . . 7
     
 
         
 
  
   
  |
| 21 | 3, 4, 5 | latlej2 17061 |
. . . . . . . 8
 

    |
| 22 | 13, 17, 14, 21 | syl3anc 1326 |
. . . . . . 7
     
 
         
 
  
   
    |
| 23 | | simp11 1091 |
. . . . . . . . . 10
     
 
         
 
  
   
    |
| 24 | | simp3lr 1133 |
. . . . . . . . . . 11
     
 
         
 
  
   
  |
| 25 | 3, 4, 5 | latlej1 17060 |
. . . . . . . . . . . . 13
 

    |
| 26 | 13, 17, 14, 25 | syl3anc 1326 |
. . . . . . . . . . . 12
     
 
         
 
  
   
    |
| 27 | | simp11r 1173 |
. . . . . . . . . . . . . 14
     
 
         
 
  
   
  |
| 28 | 3, 8 | lhpbase 35284 |
. . . . . . . . . . . . . 14
   |
| 29 | 27, 28 | syl 17 |
. . . . . . . . . . . . 13
     
 
         
 
  
   
  |
| 30 | 3, 4 | lattr 17056 |
. . . . . . . . . . . . 13
    
 
          |
| 31 | 13, 17, 19, 29, 30 | syl13anc 1328 |
. . . . . . . . . . . 12
     
 
         
 
  
   
          |
| 32 | 26, 31 | mpand 711 |
. . . . . . . . . . 11
     
 
         
 
  
   
 

   |
| 33 | 24, 32 | mtod 189 |
. . . . . . . . . 10
     
 
         
 
  
   

   |
| 34 | | simp3l 1089 |
. . . . . . . . . 10
     
 
         
 
  
   

   |
| 35 | | simp12 1092 |
. . . . . . . . . . . 12
     
 
         
 
  
   

   |
| 36 | 3, 4, 5, 6, 7, 8 | lhple 35328 |
. . . . . . . . . . . 12
      
        |
| 37 | 23, 34, 35, 36 | syl3anc 1326 |
. . . . . . . . . . 11
     
 
         
 
  
   
 
    |
| 38 | 37 | oveq2d 6666 |
. . . . . . . . . 10
     
 
         
 
  
   
   
      |
| 39 | | dihord5apre.i |
. . . . . . . . . . 11
         |
| 40 | | eqid 2622 |
. . . . . . . . . . 11
                 |
| 41 | | eqid 2622 |
. . . . . . . . . . 11
                 |
| 42 | | dihord5apre.u |
. . . . . . . . . . 11
         |
| 43 | | dihord5apre.s |
. . . . . . . . . . 11
     |
| 44 | 3, 4, 5, 6, 7, 8, 39, 40, 41, 42, 43 | dihvalcq 36525 |
. . . . . . . . . 10
       
        
     
                               
      |
| 45 | 23, 19, 33, 34, 38, 44 | syl122anc 1335 |
. . . . . . . . 9
     
 
         
 
  
   
                               
      |
| 46 | 8, 42, 23 | dvhlmod 36399 |
. . . . . . . . . . . . . 14
     
 
         
 
  
   
  |
| 47 | | eqid 2622 |
. . . . . . . . . . . . . . 15
         |
| 48 | 47 | lsssssubg 18958 |
. . . . . . . . . . . . . 14

    SubGrp    |
| 49 | 46, 48 | syl 17 |
. . . . . . . . . . . . 13
     
 
         
 
  
   
    SubGrp    |
| 50 | 4, 7, 8, 42, 41, 47 | diclss 36482 |
. . . . . . . . . . . . . 14
                         |
| 51 | 23, 34, 50 | syl2anc 693 |
. . . . . . . . . . . . 13
     
 
         
 
  
   
                  |
| 52 | 49, 51 | sseldd 3604 |
. . . . . . . . . . . 12
     
 
         
 
  
   
            SubGrp    |
| 53 | 3, 6 | latmcl 17052 |
. . . . . . . . . . . . . . 15
 
     |
| 54 | 13, 20, 29, 53 | syl3anc 1326 |
. . . . . . . . . . . . . 14
     
 
         
 
  
   
    |
| 55 | 3, 4, 6 | latmle2 17077 |
. . . . . . . . . . . . . . 15
 
     |
| 56 | 13, 20, 29, 55 | syl3anc 1326 |
. . . . . . . . . . . . . 14
     
 
         
 
  
   
    |
| 57 | 3, 4, 8, 42, 40, 47 | diblss 36459 |
. . . . . . . . . . . . . 14
                               |
| 58 | 23, 54, 56, 57 | syl12anc 1324 |
. . . . . . . . . . . . 13
     
 
         
 
  
   
                    |
| 59 | 49, 58 | sseldd 3604 |
. . . . . . . . . . . 12
     
 
         
 
  
   
              SubGrp    |
| 60 | 43 | lsmub1 18071 |
. . . . . . . . . . . 12
              SubGrp                SubGrp  
           
                              |
| 61 | 52, 59, 60 | syl2anc 693 |
. . . . . . . . . . 11
     
 
         
 
  
   
           
                              |
| 62 | | simp13 1093 |
. . . . . . . . . . . 12
     
 
         
 
  
   

   |
| 63 | | simp3r 1090 |
. . . . . . . . . . . 12
     
 
         
 
  
   
      |
| 64 | 3, 4, 5, 6, 7, 8, 39, 40, 41, 42, 43 | dihvalcq 36525 |
. . . . . . . . . . . 12
          
   
                                  |
| 65 | 23, 62, 34, 63, 64 | syl112anc 1330 |
. . . . . . . . . . 11
     
 
         
 
  
   
                                  |
| 66 | 61, 65 | sseqtr4d 3642 |
. . . . . . . . . 10
     
 
         
 
  
   
           
      |
| 67 | 37 | fveq2d 6195 |
. . . . . . . . . . . 12
     
 
         
 
  
   
             
                |
| 68 | 3, 4, 8, 39, 40 | dihvalb 36526 |
. . . . . . . . . . . . 13
                         |
| 69 | 23, 35, 68 | syl2anc 693 |
. . . . . . . . . . . 12
     
 
         
 
  
   
                  |
| 70 | 67, 69 | eqtr4d 2659 |
. . . . . . . . . . 11
     
 
         
 
  
   
             
        |
| 71 | | simp2 1062 |
. . . . . . . . . . 11
     
 
         
 
  
   
          |
| 72 | 70, 71 | eqsstrd 3639 |
. . . . . . . . . 10
     
 
         
 
  
   
             
 
      |
| 73 | 3, 6 | latmcl 17052 |
. . . . . . . . . . . . . 14
   
   
   |
| 74 | 13, 19, 29, 73 | syl3anc 1326 |
. . . . . . . . . . . . 13
     
 
         
 
  
   
 
    |
| 75 | 3, 4, 6 | latmle2 17077 |
. . . . . . . . . . . . . 14
   
   
   |
| 76 | 13, 19, 29, 75 | syl3anc 1326 |
. . . . . . . . . . . . 13
     
 
         
 
  
   
 
    |
| 77 | 3, 4, 8, 42, 40, 47 | diblss 36459 |
. . . . . . . . . . . . 13
                           
         |
| 78 | 23, 74, 76, 77 | syl12anc 1324 |
. . . . . . . . . . . 12
     
 
         
 
  
   
             
        |
| 79 | 49, 78 | sseldd 3604 |
. . . . . . . . . . 11
     
 
         
 
  
   
             
  SubGrp    |
| 80 | 3, 8, 39, 42, 47 | dihlss 36539 |
. . . . . . . . . . . . 13
    
          |
| 81 | 23, 20, 80 | syl2anc 693 |
. . . . . . . . . . . 12
     
 
         
 
  
   
          |
| 82 | 49, 81 | sseldd 3604 |
. . . . . . . . . . 11
     
 
         
 
  
   
    SubGrp    |
| 83 | 43 | lsmlub 18078 |
. . . . . . . . . . 11
              SubGrp              
   SubGrp      SubGrp                
                 
 
    
                          
          |
| 84 | 52, 79, 82, 83 | syl3anc 1326 |
. . . . . . . . . 10
     
 
         
 
  
   
                 
             
 
    
                          
          |
| 85 | 66, 72, 84 | mpbi2and 956 |
. . . . . . . . 9
     
 
         
 
  
   
                          
         |
| 86 | 45, 85 | eqsstrd 3639 |
. . . . . . . 8
     
 
         
 
  
   
            |
| 87 | 3, 4, 8, 39 | dihord4 36547 |
. . . . . . . . 9
       
  
 
            
   |
| 88 | 23, 19, 33, 62, 87 | syl121anc 1331 |
. . . . . . . 8
     
 
         
 
  
   
            
   |
| 89 | 86, 88 | mpbid 222 |
. . . . . . 7
     
 
         
 
  
   
    |
| 90 | 3, 4, 13, 14, 19, 20, 22, 89 | lattrd 17058 |
. . . . . 6
     
 
         
 
  
   
  |
| 91 | 90 | 3expia 1267 |
. . . . 5
     
 
               
       |
| 92 | 91 | exp4c 636 |
. . . 4
     
 
                       |
| 93 | 92 | imp4a 614 |
. . 3
     
 
                  
    |
| 94 | 93 | rexlimdv 3030 |
. 2
     
 
            

 
      |
| 95 | 10, 94 | mpd 15 |
1
     
 
             |