| Step | Hyp | Ref
| Expression |
| 1 | | elex 2774 |
. 2
 SRing   |
| 2 | | simp1 999 |
. . 3
  CMnd 
 

  
                     
 
CMnd |
| 3 | 2 | elexd 2776 |
. 2
  CMnd 
 

  
                     
 
  |
| 4 | | issrg.g |
. . . . . . . 8
mulGrp   |
| 5 | 4 | eleq1i 2262 |
. . . . . . 7

mulGrp    |
| 6 | 5 | bicomi 132 |
. . . . . 6
 mulGrp    |
| 7 | 6 | a1i 9 |
. . . . 5
  mulGrp 
   |
| 8 | | issrg.b |
. . . . . . 7
     |
| 9 | | basfn 12761 |
. . . . . . . 8
 |
| 10 | | funfvex 5578 |
. . . . . . . . 9
 
       |
| 11 | 10 | funfni 5361 |
. . . . . . . 8
 
       |
| 12 | 9, 11 | mpan 424 |
. . . . . . 7
       |
| 13 | 8, 12 | eqeltrid 2283 |
. . . . . 6
   |
| 14 | | issrg.p |
. . . . . . . . 9
    |
| 15 | | plusgslid 12815 |
. . . . . . . . . 10
 Slot      
  |
| 16 | 15 | slotex 12730 |
. . . . . . . . 9
      |
| 17 | 14, 16 | eqeltrid 2283 |
. . . . . . . 8
   |
| 18 | 17 | adantr 276 |
. . . . . . 7
 
   |
| 19 | | issrg.t |
. . . . . . . . . 10
     |
| 20 | | mulrslid 12834 |
. . . . . . . . . . 11
 Slot    
      |
| 21 | 20 | slotex 12730 |
. . . . . . . . . 10
       |
| 22 | 19, 21 | eqeltrid 2283 |
. . . . . . . . 9
   |
| 23 | 22 | ad2antrr 488 |
. . . . . . . 8
   
  |
| 24 | | issrg.0 |
. . . . . . . . . . 11
     |
| 25 | | fn0g 13077 |
. . . . . . . . . . . 12
 |
| 26 | | funfvex 5578 |
. . . . . . . . . . . . 13
         |
| 27 | 26 | funfni 5361 |
. . . . . . . . . . . 12
 
       |
| 28 | 25, 27 | mpan 424 |
. . . . . . . . . . 11
       |
| 29 | 24, 28 | eqeltrid 2283 |
. . . . . . . . . 10
   |
| 30 | 29 | ad3antrrr 492 |
. . . . . . . . 9
   
   |
| 31 | | simp-4r 542 |
. . . . . . . . . 10
        |
| 32 | | simplr 528 |
. . . . . . . . . . . . . . . 16
       |
| 33 | | eqidd 2197 |
. . . . . . . . . . . . . . . 16
        |
| 34 | | simpllr 534 |
. . . . . . . . . . . . . . . . 17
       |
| 35 | 34 | oveqd 5942 |
. . . . . . . . . . . . . . . 16
              |
| 36 | 32, 33, 35 | oveq123d 5946 |
. . . . . . . . . . . . . . 15
                    |
| 37 | 32 | oveqd 5942 |
. . . . . . . . . . . . . . . 16
              |
| 38 | 32 | oveqd 5942 |
. . . . . . . . . . . . . . . 16
              |
| 39 | 34, 37, 38 | oveq123d 5946 |
. . . . . . . . . . . . . . 15
                     
    |
| 40 | 36, 39 | eqeq12d 2211 |
. . . . . . . . . . . . . 14
                          
      
      |
| 41 | 34 | oveqd 5942 |
. . . . . . . . . . . . . . . 16
              |
| 42 | | eqidd 2197 |
. . . . . . . . . . . . . . . 16
        |
| 43 | 32, 41, 42 | oveq123d 5946 |
. . . . . . . . . . . . . . 15
                    |
| 44 | 32 | oveqd 5942 |
. . . . . . . . . . . . . . . 16
              |
| 45 | 34, 38, 44 | oveq123d 5946 |
. . . . . . . . . . . . . . 15
                          |
| 46 | 43, 45 | eqeq12d 2211 |
. . . . . . . . . . . . . 14
                          
 
    
      |
| 47 | 40, 46 | anbi12d 473 |
. . . . . . . . . . . . 13
                                                         
 
 
    
       |
| 48 | 31, 47 | raleqbidv 2709 |
. . . . . . . . . . . 12
       
                                                  
                 |
| 49 | 31, 48 | raleqbidv 2709 |
. . . . . . . . . . 11
       

                                           
       
                 |
| 50 | | simpr 110 |
. . . . . . . . . . . . . 14
       |
| 51 | 32, 50, 33 | oveq123d 5946 |
. . . . . . . . . . . . 13
             |
| 52 | 51, 50 | eqeq12d 2211 |
. . . . . . . . . . . 12
          
   |
| 53 | 32, 33, 50 | oveq123d 5946 |
. . . . . . . . . . . . 13
             |
| 54 | 53, 50 | eqeq12d 2211 |
. . . . . . . . . . . 12
          
   |
| 55 | 52, 54 | anbi12d 473 |
. . . . . . . . . . 11
                   
   |
| 56 | 49, 55 | anbi12d 473 |
. . . . . . . . . 10
                                                                

 
      
 
 
    
      
    |
| 57 | 31, 56 | raleqbidv 2709 |
. . . . . . . . 9
       
                                                           
       
                
    |
| 58 | 30, 57 | sbcied 3026 |
. . . . . . . 8
   
   ![]. ].](_drbrack.gif) 
                                                           
       
                
    |
| 59 | 23, 58 | sbcied 3026 |
. . . . . . 7
      ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                             
       
                
    |
| 60 | 18, 59 | sbcied 3026 |
. . . . . 6
 
   ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                             
       
                
    |
| 61 | 13, 60 | sbcied 3026 |
. . . . 5
  
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                             
       
                
    |
| 62 | 7, 61 | anbi12d 473 |
. . . 4
   mulGrp    ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif) 
                                                        
 
 

  
                     
     |
| 63 | 62 | anbi2d 464 |
. . 3
   CMnd  mulGrp    ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                           
 CMnd 

 

  
                     
      |
| 64 | | fveq2 5561 |
. . . . . 6
 mulGrp  mulGrp    |
| 65 | 64 | eleq1d 2265 |
. . . . 5
  mulGrp  mulGrp     |
| 66 | | fveq2 5561 |
. . . . . . 7
           |
| 67 | 66, 8 | eqtr4di 2247 |
. . . . . 6
       |
| 68 | | fveq2 5561 |
. . . . . . . 8
         |
| 69 | 68, 14 | eqtr4di 2247 |
. . . . . . 7
     |
| 70 | | fveq2 5561 |
. . . . . . . . 9
           |
| 71 | 70, 19 | eqtr4di 2247 |
. . . . . . . 8
      |
| 72 | | fveq2 5561 |
. . . . . . . . . 10
           |
| 73 | 72, 24 | eqtr4di 2247 |
. . . . . . . . 9
      |
| 74 | 73 | sbceq1d 2994 |
. . . . . . . 8
        ![]. ].](_drbrack.gif) 
                                                         ![]. ].](_drbrack.gif)                                                             |
| 75 | 71, 74 | sbceqbid 2996 |
. . . . . . 7
        ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif) 
                                                       
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                             |
| 76 | 69, 75 | sbceqbid 2996 |
. . . . . 6
       ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif) 
                                                         ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                             |
| 77 | 67, 76 | sbceqbid 2996 |
. . . . 5
        ![]. ].](_drbrack.gif)      ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif) 
                                                          ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                             |
| 78 | 65, 77 | anbi12d 473 |
. . . 4
   mulGrp        ![]. ].](_drbrack.gif)      ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif) 
                                                        
 mulGrp    ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                              |
| 79 | | df-srg 13596 |
. . . 4
SRing  CMnd
 mulGrp        ![]. ].](_drbrack.gif)      ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)                                                             |
| 80 | 78, 79 | elrab2 2923 |
. . 3
 SRing  CMnd  mulGrp    ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)
 ![]. ].](_drbrack.gif)  ![]. ].](_drbrack.gif)                                                              |
| 81 | | 3anass 984 |
. . 3
  CMnd 
 

  
                     
 
 CMnd 

 

  
                     
     |
| 82 | 63, 80, 81 | 3bitr4g 223 |
. 2
 
SRing  CMnd
   
       
                
     |
| 83 | 1, 3, 82 | pm5.21nii 705 |
1
 SRing  CMnd

 

       
                
    |