| Step | Hyp | Ref
| Expression |
| 1 | | exfzdc.1 |
. . . . 5
   |
| 2 | | exfzdc.2 |
. . . . 5
   |
| 3 | | eluz 9631 |
. . . . 5
 
     
   |
| 4 | 1, 2, 3 | syl2anc 411 |
. . . 4
     
   |
| 5 | 4 | biimpar 297 |
. . 3
 

      |
| 6 | | simpl 109 |
. . 3
 

  |
| 7 | | eluzfz2 10124 |
. . . 4
    
      |
| 8 | | oveq2 5933 |
. . . . . . . 8
           |
| 9 | 8 | rexeqdv 2700 |
. . . . . . 7
  
              |
| 10 | 9 | dcbid 839 |
. . . . . 6
 DECID 
    
DECID          |
| 11 | 10 | imbi2d 230 |
. . . . 5
  
DECID       
 DECID           |
| 12 | | oveq2 5933 |
. . . . . . . 8
           |
| 13 | 12 | rexeqdv 2700 |
. . . . . . 7
  
              |
| 14 | 13 | dcbid 839 |
. . . . . 6
 DECID 
    
DECID          |
| 15 | 14 | imbi2d 230 |
. . . . 5
  
DECID       
 DECID           |
| 16 | | oveq2 5933 |
. . . . . . . 8
               |
| 17 | 16 | rexeqdv 2700 |
. . . . . . 7
    
                |
| 18 | 17 | dcbid 839 |
. . . . . 6
   DECID 
    
DECID            |
| 19 | 18 | imbi2d 230 |
. . . . 5
    
DECID       
 DECID             |
| 20 | | oveq2 5933 |
. . . . . . . 8
           |
| 21 | 20 | rexeqdv 2700 |
. . . . . . 7
  
              |
| 22 | 21 | dcbid 839 |
. . . . . 6
 DECID 
    
DECID          |
| 23 | 22 | imbi2d 230 |
. . . . 5
  
DECID       
 DECID           |
| 24 | | eluzfz1 10123 |
. . . . . . . . 9
    
      |
| 25 | 24 | adantl 277 |
. . . . . . . 8
 
    
      |
| 26 | | exfzdc.3 |
. . . . . . . . . 10
 
    
DECID   |
| 27 | 26 | ralrimiva 2570 |
. . . . . . . . 9
      DECID   |
| 28 | 27 | adantr 276 |
. . . . . . . 8
 
    
     DECID   |
| 29 | | nfsbc1v 3008 |
. . . . . . . . . 10
  
 ![]. ].](_drbrack.gif)  |
| 30 | 29 | nfdc 1673 |
. . . . . . . . 9
 DECID   ![]. ].](_drbrack.gif)  |
| 31 | | sbceq1a 2999 |
. . . . . . . . . 10
    ![]. ].](_drbrack.gif)    |
| 32 | 31 | dcbid 839 |
. . . . . . . . 9
 DECID DECID   ![]. ].](_drbrack.gif)    |
| 33 | 30, 32 | rspc 2862 |
. . . . . . . 8
      
    DECID DECID   ![]. ].](_drbrack.gif)    |
| 34 | 25, 28, 33 | sylc 62 |
. . . . . . 7
 
    
DECID   ![]. ].](_drbrack.gif)   |
| 35 | 1 | adantr 276 |
. . . . . . . . . . 11
 
    
  |
| 36 | | fzsn 10158 |
. . . . . . . . . . 11
         |
| 37 | 35, 36 | syl 14 |
. . . . . . . . . 10
 
    
        |
| 38 | 37 | rexeqdv 2700 |
. . . . . . . . 9
 
    
 
    
       |
| 39 | | rexsns 3662 |
. . . . . . . . 9
    
  ![]. ].](_drbrack.gif)   |
| 40 | 38, 39 | bitrdi 196 |
. . . . . . . 8
 
    
 
    
  ![]. ].](_drbrack.gif)    |
| 41 | 40 | dcbid 839 |
. . . . . . 7
 
    
DECID
     
DECID   ![]. ].](_drbrack.gif)    |
| 42 | 34, 41 | mpbird 167 |
. . . . . 6
 
    
DECID         |
| 43 | 42 | expcom 116 |
. . . . 5
    
 DECID          |
| 44 | | simpr 110 |
. . . . . . . . . 10
    ..^ 
DECID       
DECID         |
| 45 | | fzofzp1 10320 |
. . . . . . . . . . . . 13
  ..^
        |
| 46 | 45 | ad2antrr 488 |
. . . . . . . . . . . 12
    ..^ 
DECID                |
| 47 | 27 | ad2antlr 489 |
. . . . . . . . . . . 12
    ..^ 
DECID             DECID   |
| 48 | | nfsbc1v 3008 |
. . . . . . . . . . . . . 14
      ![]. ].](_drbrack.gif)  |
| 49 | 48 | nfdc 1673 |
. . . . . . . . . . . . 13
 DECID     ![]. ].](_drbrack.gif)  |
| 50 | | sbceq1a 2999 |
. . . . . . . . . . . . . 14
        ![]. ].](_drbrack.gif)    |
| 51 | 50 | dcbid 839 |
. . . . . . . . . . . . 13
   DECID DECID     ![]. ].](_drbrack.gif)    |
| 52 | 49, 51 | rspc 2862 |
. . . . . . . . . . . 12
        
    DECID DECID     ![]. ].](_drbrack.gif)    |
| 53 | 46, 47, 52 | sylc 62 |
. . . . . . . . . . 11
    ..^ 
DECID       
DECID     ![]. ].](_drbrack.gif)   |
| 54 | | rexsns 3662 |
. . . . . . . . . . . 12
      
    ![]. ].](_drbrack.gif)   |
| 55 | 54 | dcbii 841 |
. . . . . . . . . . 11
DECID       DECID     ![]. ].](_drbrack.gif)   |
| 56 | 53, 55 | sylibr 134 |
. . . . . . . . . 10
    ..^ 
DECID       
DECID         |
| 57 | | dcor 937 |
. . . . . . . . . 10
DECID       DECID 
    
DECID        
         |
| 58 | 44, 56, 57 | sylc 62 |
. . . . . . . . 9
    ..^ 
DECID       
DECID        
        |
| 59 | | rexun 3344 |
. . . . . . . . . 10
            
 
              |
| 60 | 59 | dcbii 841 |
. . . . . . . . 9
DECID             DECID                 |
| 61 | 58, 60 | sylibr 134 |
. . . . . . . 8
    ..^ 
DECID       
DECID               |
| 62 | | elfzouz 10243 |
. . . . . . . . . . . 12
  ..^
      |
| 63 | 62 | ad2antrr 488 |
. . . . . . . . . . 11
    ..^ 
DECID              |
| 64 | | fzsuc 10161 |
. . . . . . . . . . 11
    
                  |
| 65 | 63, 64 | syl 14 |
. . . . . . . . . 10
    ..^ 
DECID                          |
| 66 | 65 | rexeqdv 2700 |
. . . . . . . . 9
    ..^ 
DECID         
                      |
| 67 | 66 | dcbid 839 |
. . . . . . . 8
    ..^ 
DECID        DECID 
      
DECID                |
| 68 | 61, 67 | mpbird 167 |
. . . . . . 7
    ..^ 
DECID       
DECID           |
| 69 | 68 | exp31 364 |
. . . . . 6
  ..^
 DECID      
DECID             |
| 70 | 69 | a2d 26 |
. . . . 5
  ..^
  DECID 
     
 DECID             |
| 71 | 11, 15, 19, 23, 43, 70 | fzind2 10332 |
. . . 4
      DECID 
        |
| 72 | 7, 71 | syl 14 |
. . 3
    
 DECID          |
| 73 | 5, 6, 72 | sylc 62 |
. 2
 

DECID         |
| 74 | | rex0 3469 |
. . . . 5

 |
| 75 | | zltnle 9389 |
. . . . . . . . 9
 
 
   |
| 76 | 2, 1, 75 | syl2anc 411 |
. . . . . . . 8
 
   |
| 77 | 76 | biimpar 297 |
. . . . . . 7
 
   |
| 78 | | fzn 10134 |
. . . . . . . . 9
 
         |
| 79 | 1, 2, 78 | syl2anc 411 |
. . . . . . . 8
         |
| 80 | 79 | adantr 276 |
. . . . . . 7
 
 
       |
| 81 | 77, 80 | mpbid 147 |
. . . . . 6
 
       |
| 82 | 81 | rexeqdv 2700 |
. . . . 5
 
  
         |
| 83 | 74, 82 | mtbiri 676 |
. . . 4
 
         |
| 84 | 83 | olcd 735 |
. . 3
 
  
              |
| 85 | | df-dc 836 |
. . 3
DECID      
 
              |
| 86 | 84, 85 | sylibr 134 |
. 2
 

DECID         |
| 87 | | zdcle 9419 |
. . . 4
 
 DECID   |
| 88 | | exmiddc 837 |
. . . 4
DECID 
   |
| 89 | 87, 88 | syl 14 |
. . 3
 
     |
| 90 | 1, 2, 89 | syl2anc 411 |
. 2
     |
| 91 | 73, 86, 90 | mpjaodan 799 |
1
 DECID         |