Proof of Theorem idmon
| Step | Hyp | Ref
| Expression |
| 1 | | simpl1 879 |
. . . . . . . . . . . 12
   Cat   
      
                  Cat  |
| 2 | 1 | ad2antrr 440 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
            Cat  |
| 3 | | simplrl 454 |
. . . . . . . . . . . 12
     Cat 
      
 
    
                  
              |
| 4 | | simpl2r 930 |
. . . . . . . . . . . . 13
   Cat   
      
                    |
| 5 | 4 | ad2antrr 440 |
. . . . . . . . . . . 12
     Cat 
      
 
    
                  
              |
| 6 | 3, 5 | jca 310 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                |
| 7 | | simpl2l 929 |
. . . . . . . . . . . . 13
   Cat   
      
                    |
| 8 | 7 | ad2antrr 440 |
. . . . . . . . . . . 12
     Cat 
      
 
    
                  
              |
| 9 | 8, 5 | jca 310 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                |
| 10 | 2, 6, 9 | 3jca 1050 |
. . . . . . . . . 10
     Cat 
      
 
    
                  
             Cat   
    |
| 11 | | simplrr 455 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                     |
| 12 | | simpl3r 932 |
. . . . . . . . . . . 12
   Cat   
      
                           |
| 13 | 12 | ad2antrr 440 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                     |
| 14 | | simpl3l 931 |
. . . . . . . . . . . 12
   Cat   
      
                           |
| 15 | 14 | ad2antrr 440 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                     |
| 16 | 11, 13, 15 | 3jca 1050 |
. . . . . . . . . 10
     Cat 
      
 
    
                  
                 
 
    
 
    
     |
| 17 | | idmon.1 |
. . . . . . . . . . 11
id   |
| 18 | | idmon.2 |
. . . . . . . . . . 11
hom
   |
| 19 | | idmon.3 |
. . . . . . . . . . 11
o   |
| 20 | 17, 18, 19 | cmpassoh 15150 |
. . . . . . . . . 10
  Cat            
 
    
 
    
                      |
| 21 | 10, 16, 20 | sylc 83 |
. . . . . . . . 9
     Cat 
      
 
    
                  
                              |
| 22 | | simpr 350 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                     |
| 23 | 22, 13, 15 | 3jca 1050 |
. . . . . . . . . 10
     Cat 
      
 
    
                  
                 
 
    
 
    
     |
| 24 | 17, 18, 19 | cmpassoh 15150 |
. . . . . . . . . 10
  Cat            
 
    
 
    
                      |
| 25 | 10, 23, 24 | sylc 83 |
. . . . . . . . 9
     Cat 
      
 
    
                  
                              |
| 26 | 21, 25 | eqeq12d 1899 |
. . . . . . . 8
     Cat 
      
 
    
                  
                                                |
| 27 | | simpllr 453 |
. . . . . . . . . . . 12
     Cat 
      
 
    
                  
                      |
| 28 | 27 | opreq1d 4897 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                              |
| 29 | 27 | opreq1d 4897 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
                              |
| 30 | 28, 29 | eqeq12d 1899 |
. . . . . . . . . 10
     Cat 
      
 
    
                  
                                                |
| 31 | 30 | biimpd 170 |
. . . . . . . . 9
     Cat 
      
 
    
                  
                                                |
| 32 | | simpll1 915 |
. . . . . . . . . . . . . 14
    Cat   
      
                   Cat  |
| 33 | | simpr 350 |
. . . . . . . . . . . . . 14
    Cat   
      
                     |
| 34 | 4 | adantr 425 |
. . . . . . . . . . . . . 14
    Cat   
      
                     |
| 35 | | idmon.4 |
. . . . . . . . . . . . . . 15
id   |
| 36 | 17, 18, 35, 19 | cmphmia 15147 |
. . . . . . . . . . . . . 14
  Cat
                    |
| 37 | 32, 33, 34, 36 | syl111anc 1100 |
. . . . . . . . . . . . 13
    Cat   
      
                          
           |
| 38 | 37 | ex 402 |
. . . . . . . . . . . 12
   Cat   
      
                          
            |
| 39 | 38 | imp32 390 |
. . . . . . . . . . 11
    Cat   
      
                       
              |
| 40 | 39 | adantr 425 |
. . . . . . . . . 10
     Cat 
      
 
    
                  
                      |
| 41 | 35 | eqcomi 1888 |
. . . . . . . . . . . . . . . . . . . 20
id   |
| 42 | 41 | dmeqi 4158 |
. . . . . . . . . . . . . . . . . . 19
id   |
| 43 | 17, 42 | eqtri 1908 |
. . . . . . . . . . . . . . . . . 18
 |
| 44 | 43 | eleq2i 1961 |
. . . . . . . . . . . . . . . . 17

  |
| 45 | 44 | biimpi 168 |
. . . . . . . . . . . . . . . 16

  |
| 46 | 45 | adantl 424 |
. . . . . . . . . . . . . . 15
     |
| 47 | 46 | 3ad2ant2 898 |
. . . . . . . . . . . . . 14
  Cat          
    
      |
| 48 | 47 | adantr 425 |
. . . . . . . . . . . . 13
   Cat   
      
                    |
| 49 | 48 | ad2antrr 440 |
. . . . . . . . . . . 12
     Cat 
      
 
    
                  
              |
| 50 | | simpll1 915 |
. . . . . . . . . . . . . 14
    Cat   
      
                       
    Cat  |
| 51 | | simprl 450 |
. . . . . . . . . . . . . 14
    Cat   
      
                       
      |
| 52 | 4 | adantr 425 |
. . . . . . . . . . . . . 14
    Cat   
      
                       
      |
| 53 | | eqid 1884 |
. . . . . . . . . . . . . . 15
dom  dom   |
| 54 | 17, 53, 18 | ehm 15140 |
. . . . . . . . . . . . . 14
  Cat
        
dom     |
| 55 | 50, 51, 52, 54 | syl111anc 1100 |
. . . . . . . . . . . . 13
    Cat   
      
                       
           
dom     |
| 56 | 55 | imp 377 |
. . . . . . . . . . . 12
     Cat 
      
 
    
                  
            dom    |
| 57 | 2, 49, 56 | 3jca 1050 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
             Cat
dom     |
| 58 | | eqid 1884 |
. . . . . . . . . . . . . 14
cod  cod   |
| 59 | 17, 58, 18 | cehm 15142 |
. . . . . . . . . . . . 13
  Cat
          cod        |
| 60 | 50, 51, 52, 59 | syl111anc 1100 |
. . . . . . . . . . . 12
    Cat   
      
                       
             cod        |
| 61 | 60 | imp 377 |
. . . . . . . . . . 11
     Cat 
      
 
    
                  
             cod       |
| 62 | | eqid 1884 |
. . . . . . . . . . . 12
dom  dom   |
| 63 | | eqid 1884 |
. . . . . . . . . . . 12
 |
| 64 | 53, 62, 63, 35, 19, 58 | cmpida 15121 |
. . . . . . . . . . 11
  Cat
dom     cod                |
| 65 | 57, 61, 64 | sylc 83 |
. . . . . . . . . 10
     Cat 
      
 
    
                  
                      |
| 66 | 40, 65 | eqeq12d 1899 |
. . . . . . . . 9
     Cat 
      
 
    
                  
                                |
| 67 | 31, 66 | sylibd 219 |
. . . . . . . 8
     Cat 
      
 
    
                  
                                |
| 68 | 26, 67 | sylbid 220 |
. . . . . . 7
     Cat 
      
 
    
                  
                                |
| 69 | | opreq2 4890 |
. . . . . . 7
                           |
| 70 | 68, 69 | syl5 20 |
. . . . . 6
     Cat 
      
 
    
                  
                        |
| 71 | 70 | r19.21aiva 2176 |
. . . . 5
    Cat   
      
                       
                         |
| 72 | 71 | ex 402 |
. . . 4
   Cat   
      
                            
                     |
| 73 | 72 | r19.21aivv 2183 |
. . 3
   Cat   
      
                        
                        |
| 74 | 17, 18, 19 | ismonc 15163 |
. . . 4
  Cat       
   
Monic                                   |
| 75 | 1, 4, 7, 12, 74 | syl121anc 1105 |
. . 3
   Cat   
      
                   Monic    
             
                |
| 76 | 73, 75 | mpbird 213 |
. 2
   Cat   
      
                  Monic     |
| 77 | 76 | ex 402 |
1
  Cat          
    
             Monic      |