Proof of Theorem dfac12lem1
| Step | Hyp | Ref
| Expression |
| 1 | | dfac12.5 |
. . 3
   |
| 2 | | dfac12.4 |
. . . 4
recs                                       OrdIso                      |
| 3 | 2 | tfr2 7494 |
. . 3
                                            OrdIso                           |
| 4 | 1, 3 | syl 17 |
. 2
          
                                 OrdIso                           |
| 5 | 2 | tfr1 7493 |
. . . . 5
 |
| 6 | | fnfun 5988 |
. . . . 5
   |
| 7 | 5, 6 | ax-mp 5 |
. . . 4
 |
| 8 | | resfunexg 6479 |
. . . 4
       |
| 9 | 7, 1, 8 | sylancr 695 |
. . 3
     |
| 10 | | dmeq 5324 |
. . . . . 6
  
    |
| 11 | 10 | fveq2d 6195 |
. . . . 5
               |
| 12 | 10 | unieqd 4446 |
. . . . . . 7
   
     |
| 13 | 10, 12 | eqeq12d 2637 |
. . . . . 6
             |
| 14 | | rneq 5351 |
. . . . . . . . . . . . 13
  
    |
| 15 | | df-ima 5127 |
. . . . . . . . . . . . 13
       |
| 16 | 14, 15 | syl6eqr 2674 |
. . . . . . . . . . . 12
  
      |
| 17 | 16 | unieqd 4446 |
. . . . . . . . . . 11
   
       |
| 18 | 17 | rneqd 5353 |
. . . . . . . . . 10
           |
| 19 | 18 | unieqd 4446 |
. . . . . . . . 9
             |
| 20 | | suceq 5790 |
. . . . . . . . 9
   
      
        |
| 21 | 19, 20 | syl 17 |
. . . . . . . 8
             |
| 22 | 21 | oveq1d 6665 |
. . . . . . 7
                         |
| 23 | | fveq1 6190 |
. . . . . . . 8
                       |
| 24 | 23 | fveq1d 6193 |
. . . . . . 7
                 
             |
| 25 | 22, 24 | oveq12d 6668 |
. . . . . 6
    
                                                  |
| 26 | | id 22 |
. . . . . . . . . . . . 13
       |
| 27 | 26, 12 | fveq12d 6197 |
. . . . . . . . . . . 12
         
         |
| 28 | 27 | rneqd 5353 |
. . . . . . . . . . 11
                   |
| 29 | | oieq2 8418 |
. . . . . . . . . . 11
              
OrdIso       OrdIso             |
| 30 | 28, 29 | syl 17 |
. . . . . . . . . 10
   OrdIso       OrdIso  
          |
| 31 | 30 | cnveqd 5298 |
. . . . . . . . 9
   OrdIso       OrdIso             |
| 32 | 31, 27 | coeq12d 5286 |
. . . . . . . 8
    OrdIso              OrdIso  
                    |
| 33 | 32 | imaeq1d 5465 |
. . . . . . 7
     OrdIso                  OrdIso  
                       |
| 34 | 33 | fveq2d 6195 |
. . . . . 6
        OrdIso                      OrdIso                           |
| 35 | 13, 25, 34 | ifbieq12d 4113 |
. . . . 5
                                   OrdIso                                         
                  OrdIso                            |
| 36 | 11, 35 | mpteq12dv 4733 |
. . . 4
      
                                 OrdIso                       
                         
                  OrdIso                             |
| 37 | | eqid 2622 |
. . . 4
                                      OrdIso                        
                                 OrdIso                     |
| 38 | | fvex 6201 |
. . . . 5
  
    |
| 39 | 38 | mptex 6486 |
. . . 4
                              
                  OrdIso                            |
| 40 | 36, 37, 39 | fvmpt 6282 |
. . 3
 

     
                                 OrdIso                                    
                                     OrdIso                             |
| 41 | 9, 40 | syl 17 |
. 2
                                        OrdIso                             
                         
                  OrdIso                             |
| 42 | | onss 6990 |
. . . . . . . 8
   |
| 43 | 1, 42 | syl 17 |
. . . . . . 7

  |
| 44 | | fnssres 6004 |
. . . . . . 7
       |
| 45 | 5, 43, 44 | sylancr 695 |
. . . . . 6
     |
| 46 | | fndm 5990 |
. . . . . 6
 

    |
| 47 | 45, 46 | syl 17 |
. . . . 5
     |
| 48 | 47 | fveq2d 6195 |
. . . 4
    
        |
| 49 | 48 | mpteq1d 4738 |
. . 3
            
                                     OrdIso                                    
                                     OrdIso                             |
| 50 | 47 | adantr 481 |
. . . . . . 7
 
    
    |
| 51 | 50 | unieqd 4446 |
. . . . . . 7
 
    
      |
| 52 | 50, 51 | eqeq12d 2637 |
. . . . . 6
 
    
 
   
    |
| 53 | 52 | ifbid 4108 |
. . . . 5
 
    
                       
                  OrdIso                             
                                  OrdIso                            |
| 54 | | rankr1ai 8661 |
. . . . . . . . . . . 12
           |
| 55 | 54 | ad2antlr 763 |
. . . . . . . . . . 11
                |
| 56 | | simpr 477 |
. . . . . . . . . . 11
         
   |
| 57 | 55, 56 | eleqtrd 2703 |
. . . . . . . . . 10
                 |
| 58 | | eloni 5733 |
. . . . . . . . . . . 12
   |
| 59 | | ordsucuniel 7024 |
. . . . . . . . . . . 12

     
       |
| 60 | 1, 58, 59 | 3syl 18 |
. . . . . . . . . . 11
              |
| 61 | 60 | ad2antrr 762 |
. . . . . . . . . 10
                       |
| 62 | 57, 61 | mpbid 222 |
. . . . . . . . 9
                |
| 63 | | fvres 6207 |
. . . . . . . . 9
                 
       |
| 64 | 62, 63 | syl 17 |
. . . . . . . 8
                      
       |
| 65 | 64 | fveq1d 6193 |
. . . . . . 7
                           
          |
| 66 | 65 | oveq2d 6666 |
. . . . . 6
                         
                                        |
| 67 | 66 | ifeq1da 4116 |
. . . . 5
 
    
 
                 
                  OrdIso                             
                                OrdIso                            |
| 68 | 51 | adantr 481 |
. . . . . . . . . . . . . . 15
       
        |
| 69 | 68 | fveq2d 6195 |
. . . . . . . . . . . . . 14
       
            
       |
| 70 | 1 | ad2antrr 762 |
. . . . . . . . . . . . . . . . 17
       
    |
| 71 | | uniexg 6955 |
. . . . . . . . . . . . . . . . 17
    |
| 72 | | sucidg 5803 |
. . . . . . . . . . . . . . . . 17
 
    |
| 73 | 70, 71, 72 | 3syl 18 |
. . . . . . . . . . . . . . . 16
       
      |
| 74 | 1 | adantr 481 |
. . . . . . . . . . . . . . . . . 18
 
    
  |
| 75 | | orduniorsuc 7030 |
. . . . . . . . . . . . . . . . . 18

      |
| 76 | 74, 58, 75 | 3syl 18 |
. . . . . . . . . . . . . . . . 17
 
    
      |
| 77 | 76 | orcanai 952 |
. . . . . . . . . . . . . . . 16
       
     |
| 78 | 73, 77 | eleqtrrd 2704 |
. . . . . . . . . . . . . . 15
       
     |
| 79 | | fvres 6207 |
. . . . . . . . . . . . . . 15
 
              |
| 80 | 78, 79 | syl 17 |
. . . . . . . . . . . . . 14
       
                |
| 81 | 69, 80 | eqtrd 2656 |
. . . . . . . . . . . . 13
       
                  |
| 82 | 81 | rneqd 5353 |
. . . . . . . . . . . 12
       
 
                |
| 83 | | oieq2 8418 |
. . . . . . . . . . . 12
               OrdIso
          OrdIso         |
| 84 | 82, 83 | syl 17 |
. . . . . . . . . . 11
       
  OrdIso
          OrdIso         |
| 85 | 84 | cnveqd 5298 |
. . . . . . . . . 10
       
  OrdIso           OrdIso         |
| 86 | 85, 81 | coeq12d 5286 |
. . . . . . . . 9
       
   OrdIso  
                   OrdIso               |
| 87 | | dfac12.h |
. . . . . . . . 9
 OrdIso              |
| 88 | 86, 87 | syl6eqr 2674 |
. . . . . . . 8
       
   OrdIso  
                    |
| 89 | 88 | imaeq1d 5465 |
. . . . . . 7
       
    OrdIso                              |
| 90 | 89 | fveq2d 6195 |
. . . . . 6
       
       OrdIso  
                                |
| 91 | 90 | ifeq2da 4117 |
. . . . 5
 
    
 
                  
               OrdIso                             
                                      |
| 92 | 53, 67, 91 | 3eqtrd 2660 |
. . . 4
 
    
                       
                  OrdIso                             
                                      |
| 93 | 92 | mpteq2dva 4744 |
. . 3
          
                                     OrdIso                                                                           |
| 94 | 49, 93 | eqtrd 2656 |
. 2
            
                                     OrdIso                                                                           |
| 95 | 4, 41, 94 | 3eqtrd 2660 |
1
                                                     |