| Step | Hyp | Ref
| Expression |
| 1 | | ismrcd.f |
. . 3
         |
| 2 | | ffn 6045 |
. . 3
          |
| 3 | 1, 2 | syl 17 |
. 2
    |
| 4 | | ismrcd.b |
. . . 4
   |
| 5 | | ismrcd.e |
. . . 4
 

      |
| 6 | | ismrcd.m |
. . . 4
 
           |
| 7 | | ismrcd.i |
. . . 4
 

              |
| 8 | 4, 1, 5, 6, 7 | ismrcd1 37261 |
. . 3
  Moore    |
| 9 | | eqid 2622 |
. . . 4
mrCls   mrCls    |
| 10 | 9 | mrcf 16269 |
. . 3
 
Moore 
mrCls 
         |
| 11 | | ffn 6045 |
. . 3
 mrCls        
mrCls 
    |
| 12 | 8, 10, 11 | 3syl 18 |
. 2
 mrCls      |
| 13 | 8, 9 | mrcssvd 16283 |
. . . . . 6
  mrCls 
      |
| 14 | 13 | adantr 481 |
. . . . 5
 
   mrCls        |
| 15 | | elpwi 4168 |
. . . . . 6
 
  |
| 16 | 9 | mrcssid 16277 |
. . . . . 6
   Moore    mrCls 
      |
| 17 | 8, 15, 16 | syl2an 494 |
. . . . 5
 
   mrCls 
      |
| 18 | 6 | 3expib 1268 |
. . . . . . . 8
   
           |
| 19 | 18 | alrimivv 1856 |
. . . . . . 7
       
           |
| 20 | | vex 3203 |
. . . . . . . 8
 |
| 21 | | fvex 6201 |
. . . . . . . 8
 mrCls       |
| 22 | | sseq1 3626 |
. . . . . . . . . . . 12
  mrCls     
  mrCls     
   |
| 23 | 22 | adantl 482 |
. . . . . . . . . . 11
 
 mrCls       
 mrCls     
   |
| 24 | | sseq12 3628 |
. . . . . . . . . . 11
 
 mrCls       
 mrCls         |
| 25 | 23, 24 | anbi12d 747 |
. . . . . . . . . 10
 
 mrCls        
   mrCls     
 mrCls          |
| 26 | | fveq2 6191 |
. . . . . . . . . . 11
           |
| 27 | | fveq2 6191 |
. . . . . . . . . . 11
  mrCls     
        mrCls         |
| 28 | | sseq12 3628 |
. . . . . . . . . . 11
                  mrCls       
                 mrCls          |
| 29 | 26, 27, 28 | syl2an 494 |
. . . . . . . . . 10
 
 mrCls           
   
        mrCls          |
| 30 | 25, 29 | imbi12d 334 |
. . . . . . . . 9
 
 mrCls          
            mrCls       mrCls               mrCls           |
| 31 | 30 | spc2gv 3296 |
. . . . . . . 8
   mrCls             
         
   mrCls 
     mrCls               mrCls           |
| 32 | 20, 21, 31 | mp2an 708 |
. . . . . . 7
      
    
        mrCls     
 mrCls               mrCls          |
| 33 | 19, 32 | syl 17 |
. . . . . 6
    mrCls     
 mrCls               mrCls          |
| 34 | 33 | adantr 481 |
. . . . 5
 
     mrCls     
 mrCls               mrCls          |
| 35 | 14, 17, 34 | mp2and 715 |
. . . 4
 
          mrCls         |
| 36 | 9 | mrccl 16271 |
. . . . . 6
   Moore    mrCls         |
| 37 | 8, 15, 36 | syl2an 494 |
. . . . 5
 
   mrCls         |
| 38 | 3 | adantr 481 |
. . . . . 6
 
     |
| 39 | 21 | elpw 4164 |
. . . . . . . 8
  mrCls      
 mrCls     
  |
| 40 | 13, 39 | sylibr 224 |
. . . . . . 7
  mrCls 
       |
| 41 | 40 | adantr 481 |
. . . . . 6
 
   mrCls         |
| 42 | | fnelfp 6441 |
. . . . . 6
    mrCls 
        mrCls      
    mrCls 
      mrCls         |
| 43 | 38, 41, 42 | syl2anc 693 |
. . . . 5
 
    mrCls 
         mrCls        mrCls         |
| 44 | 37, 43 | mpbid 222 |
. . . 4
 
      mrCls        mrCls        |
| 45 | 35, 44 | sseqtrd 3641 |
. . 3
 
       mrCls 
      |
| 46 | 8 | adantr 481 |
. . . 4
 
  
Moore    |
| 47 | | sseq1 3626 |
. . . . . . . 8
 
   |
| 48 | 47 | anbi2d 740 |
. . . . . . 7
  


    |
| 49 | | id 22 |
. . . . . . . 8
   |
| 50 | | fveq2 6191 |
. . . . . . . 8
           |
| 51 | 49, 50 | sseq12d 3634 |
. . . . . . 7
 
   
       |
| 52 | 48, 51 | imbi12d 334 |
. . . . . 6
         
  
        |
| 53 | 52, 5 | chvarv 2263 |
. . . . 5
 
       |
| 54 | 15, 53 | sylan2 491 |
. . . 4
 
        |
| 55 | 50 | fveq2d 6195 |
. . . . . . . . 9
                   |
| 56 | 55, 50 | eqeq12d 2637 |
. . . . . . . 8
             
               |
| 57 | 48, 56 | imbi12d 334 |
. . . . . . 7
                                     |
| 58 | 57, 7 | chvarv 2263 |
. . . . . 6
 
               |
| 59 | 15, 58 | sylan2 491 |
. . . . 5
 
                |
| 60 | 1 | ffvelrnda 6359 |
. . . . . 6
 
         |
| 61 | | fnelfp 6441 |
. . . . . 6
        
                     |
| 62 | 38, 60, 61 | syl2anc 693 |
. . . . 5
 
       
               |
| 63 | 59, 62 | mpbird 247 |
. . . 4
 
         |
| 64 | 9 | mrcsscl 16280 |
. . . 4
   Moore     
    

 mrCls     
      |
| 65 | 46, 54, 63, 64 | syl3anc 1326 |
. . 3
 
   mrCls            |
| 66 | 45, 65 | eqssd 3620 |
. 2
 
       mrCls        |
| 67 | 3, 12, 66 | eqfnfvd 6314 |
1
 mrCls     |