| Step | Hyp | Ref
| Expression |
| 1 | | rngccatidALTV.b |
. . 3
     |
| 2 | 1 | a1i 11 |
. 2
       |
| 3 | | eqidd 2623 |
. 2
         |
| 4 | | eqidd 2623 |
. 2
 comp  comp    |
| 5 | | rngccatALTV.c |
. . . 4
RngCatALTV   |
| 6 | | fvex 6201 |
. . . 4
RngCatALTV   |
| 7 | 5, 6 | eqeltri 2697 |
. . 3
 |
| 8 | 7 | a1i 11 |
. 2
   |
| 9 | | biid 251 |
. 2
  


        
  
            
 
 

              
  
        |
| 10 | | simpl 473 |
. . . . . 6
 
   |
| 11 | 5, 1, 10 | rngcbasALTV 41983 |
. . . . 5
 
  Rng  |
| 12 | | eleq2 2690 |
. . . . . . . 8
  Rng 
 Rng   |
| 13 | | elin 3796 |
. . . . . . . . 9
  Rng 
Rng  |
| 14 | 13 | simprbi 480 |
. . . . . . . 8
  Rng Rng |
| 15 | 12, 14 | syl6bi 243 |
. . . . . . 7
  Rng 
Rng  |
| 16 | 15 | com12 32 |
. . . . . 6
 
 Rng
Rng  |
| 17 | 16 | adantl 482 |
. . . . 5
 
  
Rng Rng  |
| 18 | 11, 17 | mpd 15 |
. . . 4
 
 Rng |
| 19 | | eqid 2622 |
. . . . 5
         |
| 20 | 19 | idrnghm 41908 |
. . . 4
 Rng       RngHomo    |
| 21 | 18, 20 | syl 17 |
. . 3
 
       RngHomo    |
| 22 | | eqid 2622 |
. . . 4
       |
| 23 | | simpr 477 |
. . . 4
 
   |
| 24 | 5, 1, 10, 22, 23, 23 | rngchomALTV 41985 |
. . 3
 
         RngHomo    |
| 25 | 21, 24 | eleqtrrd 2704 |
. 2
 
               |
| 26 | | simpl 473 |
. . . 4
     
        
  
             
  |
| 27 | | eqid 2622 |
. . . 4
comp  comp   |
| 28 | | simpl 473 |
. . . . . 6
 
   |
| 29 | 28 | 3ad2ant1 1082 |
. . . . 5
  


        
  
               |
| 30 | 29 | adantl 482 |
. . . 4
     
        
  
             
  |
| 31 | | simpr 477 |
. . . . . 6
 
   |
| 32 | 31 | 3ad2ant1 1082 |
. . . . 5
  


        
  
               |
| 33 | 32 | adantl 482 |
. . . 4
     
        
  
             
  |
| 34 | | simp1 1061 |
. . . . . . . . . . . . 13
  


 
  |
| 35 | 28 | 3ad2ant3 1084 |
. . . . . . . . . . . . 13
  


 
  |
| 36 | 31 | 3ad2ant3 1084 |
. . . . . . . . . . . . 13
  


 
  |
| 37 | 5, 1, 34, 22, 35, 36 | rngchomALTV 41985 |
. . . . . . . . . . . 12
  


          RngHomo    |
| 38 | 37 | eleq2d 2687 |
. . . . . . . . . . 11
  


         

RngHomo     |
| 39 | 38 | biimpd 219 |
. . . . . . . . . 10
  


           RngHomo     |
| 40 | 39 | 3exp 1264 |
. . . . . . . . 9
  

 
          RngHomo       |
| 41 | 40 | com14 96 |
. . . . . . . 8
         

 
   RngHomo       |
| 42 | 41 | 3ad2ant1 1082 |
. . . . . . 7
        
  
           
 
    
 RngHomo       |
| 43 | 42 | com13 88 |
. . . . . 6
 
            
  
           

 RngHomo       |
| 44 | 43 | 3imp 1256 |
. . . . 5
  


        
  
             
 RngHomo     |
| 45 | 44 | impcom 446 |
. . . 4
     
        
  
               RngHomo    |
| 46 | 21 | expcom 451 |
. . . . . . 7
 
      RngHomo     |
| 47 | 46 | adantl 482 |
. . . . . 6
 
        RngHomo     |
| 48 | 47 | 3ad2ant1 1082 |
. . . . 5
  


        
  
             
      RngHomo     |
| 49 | 48 | impcom 446 |
. . . 4
     
        
  
                    RngHomo    |
| 50 | 5, 1, 26, 27, 30, 33, 33, 45, 49 | rngccoALTV 41988 |
. . 3
     
        
  
                          comp               |
| 51 | | simpl 473 |
. . . . . . . . . . . 12
  
    |
| 52 | | simprl 794 |
. . . . . . . . . . . 12
  
    |
| 53 | | simprr 796 |
. . . . . . . . . . . 12
  
    |
| 54 | 5, 1, 51, 22, 52, 53 | elrngchomALTV 41986 |
. . . . . . . . . . 11
  
                         |
| 55 | 54 | ex 450 |
. . . . . . . . . 10
  

                        |
| 56 | 55 | com13 88 |
. . . . . . . . 9
         


                |
| 57 | | fcoi2 6079 |
. . . . . . . . 9
            
         |
| 58 | 56, 57 | syl8 76 |
. . . . . . . 8
         



          |
| 59 | 58 | 3ad2ant1 1082 |
. . . . . . 7
        
  
           
 
             |
| 60 | 59 | com12 32 |
. . . . . 6
 
                
  
                 |
| 61 | 60 | a1d 25 |
. . . . 5
 
            
  
           


           |
| 62 | 61 | 3imp 1256 |
. . . 4
  


        
  
             
          |
| 63 | 62 | impcom 446 |
. . 3
     
        
  
                       |
| 64 | 50, 63 | eqtrd 2656 |
. 2
     
        
  
                          comp        |
| 65 | | simp3 1063 |
. . . . . . . . 9
            
 
   |
| 66 | 31 | adantr 481 |
. . . . . . . . . 10
  


 
  |
| 67 | 66 | 3ad2ant2 1083 |
. . . . . . . . 9
            
 
   |
| 68 | | simprl 794 |
. . . . . . . . . 10
  


    |
| 69 | 68 | 3ad2ant2 1083 |
. . . . . . . . 9
            
 
   |
| 70 | 47 | adantr 481 |
. . . . . . . . . . 11
  


         RngHomo     |
| 71 | 70 | a1i 11 |
. . . . . . . . . 10
            
 

      RngHomo      |
| 72 | 71 | 3imp 1256 |
. . . . . . . . 9
            
 
       RngHomo    |
| 73 | | simpl 473 |
. . . . . . . . . . . . . . 15
     
     |
| 74 | 66 | adantl 482 |
. . . . . . . . . . . . . . 15
     
     |
| 75 | 68 | adantl 482 |
. . . . . . . . . . . . . . 15
     
     |
| 76 | 5, 1, 73, 22, 74, 75 | rngchomALTV 41985 |
. . . . . . . . . . . . . 14
     
           RngHomo    |
| 77 | 76 | eleq2d 2687 |
. . . . . . . . . . . . 13
     
          

RngHomo     |
| 78 | 77 | biimpd 219 |
. . . . . . . . . . . 12
     
            RngHomo     |
| 79 | 78 | ex 450 |
. . . . . . . . . . 11
     
 
         RngHomo      |
| 80 | 79 | com13 88 |
. . . . . . . . . 10
            
 

 RngHomo      |
| 81 | 80 | 3imp 1256 |
. . . . . . . . 9
            
 
  RngHomo    |
| 82 | 5, 1, 65, 27, 67, 67, 69, 72, 81 | rngccoALTV 41988 |
. . . . . . . 8
            
 
        comp    
               |
| 83 | 5, 1, 73, 22, 74, 75 | elrngchomALTV 41986 |
. . . . . . . . . . . 12
     
                          |
| 84 | 83 | ex 450 |
. . . . . . . . . . 11
     
 
                        |
| 85 | 84 | com13 88 |
. . . . . . . . . 10
            
 

                |
| 86 | 85 | 3imp 1256 |
. . . . . . . . 9
            
 
               |
| 87 | | fcoi1 6078 |
. . . . . . . . 9
            

        |
| 88 | 86, 87 | syl 17 |
. . . . . . . 8
            
 
          |
| 89 | 82, 88 | eqtrd 2656 |
. . . . . . 7
            
 
        comp    
        |
| 90 | 89 | 3exp 1264 |
. . . . . 6
            
 

       comp               |
| 91 | 90 | 3ad2ant2 1083 |
. . . . 5
        
  
           
  


          comp               |
| 92 | 91 | expdcom 455 |
. . . 4
 
            
  
           

       comp                |
| 93 | 92 | 3imp 1256 |
. . 3
  


        
  
             
       comp    
         |
| 94 | 93 | impcom 446 |
. 2
     
        
  
                     comp             |
| 95 | | simp2l 1087 |
. . . . . . . . . . . . 13
  


    |
| 96 | 5, 1, 34, 22, 36, 95 | rngchomALTV 41985 |
. . . . . . . . . . . 12
  


          RngHomo    |
| 97 | 96 | eleq2d 2687 |
. . . . . . . . . . 11
  


         

RngHomo     |
| 98 | 97 | biimpd 219 |
. . . . . . . . . 10
  


           RngHomo     |
| 99 | 98 | 3exp 1264 |
. . . . . . . . 9
  

 
          RngHomo       |
| 100 | 99 | com14 96 |
. . . . . . . 8
         

 
   RngHomo       |
| 101 | 100 | 3ad2ant2 1083 |
. . . . . . 7
        
  
           
 
    
 RngHomo       |
| 102 | 101 | com13 88 |
. . . . . 6
 
            
  
           

 RngHomo       |
| 103 | 102 | 3imp 1256 |
. . . . 5
  


        
  
             
 RngHomo     |
| 104 | 103 | impcom 446 |
. . . 4
     
        
  
               RngHomo    |
| 105 | | rnghmco 41907 |
. . . 4
   RngHomo   RngHomo  
   RngHomo    |
| 106 | 104, 45, 105 | syl2anc 693 |
. . 3
     
        
  
                 RngHomo    |
| 107 | | simp2l 1087 |
. . . . 5
  


        
  
               |
| 108 | 107 | adantl 482 |
. . . 4
     
        
  
                |
| 109 | 5, 1, 26, 27, 30, 33, 108, 45, 104 | rngccoALTV 41988 |
. . 3
     
        
  
                     comp          |
| 110 | 5, 1, 26, 22, 30, 108 | rngchomALTV 41985 |
. . 3
     
        
  
                      RngHomo    |
| 111 | 106, 109,
110 | 3eltr4d 2716 |
. 2
     
        
  
                     comp               |
| 112 | | coass 5654 |
. . . 4
         |
| 113 | | simp2r 1088 |
. . . . . 6
  


        
  
               |
| 114 | 113 | adantl 482 |
. . . . 5
     
        
  
                |
| 115 | | simp2r 1088 |
. . . . . . . . . . . . . . 15
  


    |
| 116 | 5, 1, 34, 22, 95, 115 | rngchomALTV 41985 |
. . . . . . . . . . . . . 14
  


          RngHomo    |
| 117 | 116 | eleq2d 2687 |
. . . . . . . . . . . . 13
  


         

RngHomo     |
| 118 | 117 | biimpd 219 |
. . . . . . . . . . . 12
  


         
 RngHomo     |
| 119 | 118 | 3exp 1264 |
. . . . . . . . . . 11
  

 
        
 RngHomo       |
| 120 | 119 | com14 96 |
. . . . . . . . . 10
         

 
   RngHomo       |
| 121 | 120 | 3ad2ant3 1084 |
. . . . . . . . 9
        
  
           
 
    
 RngHomo       |
| 122 | 121 | com13 88 |
. . . . . . . 8
 
            
  
           

 RngHomo       |
| 123 | 122 | 3imp 1256 |
. . . . . . 7
  


        
  
             
 RngHomo     |
| 124 | 123 | impcom 446 |
. . . . . 6
     
        
  
             
 RngHomo    |
| 125 | | rnghmco 41907 |
. . . . . 6
   RngHomo   RngHomo  
   RngHomo    |
| 126 | 124, 104,
125 | syl2anc 693 |
. . . . 5
     
        
  
                 RngHomo    |
| 127 | 5, 1, 26, 27, 30, 33, 114, 45, 126 | rngccoALTV 41988 |
. . . 4
     
        
  
                       comp            |
| 128 | 5, 1, 26, 27, 30, 108, 114, 106, 124 | rngccoALTV 41988 |
. . . 4
     
        
  
                     comp              |
| 129 | 112, 127,
128 | 3eqtr4a 2682 |
. . 3
     
        
  
                       comp             comp          |
| 130 | 5, 1, 26, 27, 33, 108, 114, 104, 124 | rngccoALTV 41988 |
. . . 4
     
        
  
                     comp          |
| 131 | 130 | oveq1d 6665 |
. . 3
     
        
  
                      comp            comp               comp        |
| 132 | 109 | oveq2d 6666 |
. . 3
     
        
  
                     comp            comp              comp          |
| 133 | 129, 131,
132 | 3eqtr4d 2666 |
. 2
     
        
  
                      comp            comp             comp            comp         |
| 134 | 2, 3, 4, 8, 9, 25,
64, 94, 111, 133 | iscatd2 16342 |
1
 
              |