| Step | Hyp | Ref
| Expression |
| 1 | | nfv 1542 |
. . . . . . 7

Markov |
| 2 | | nfra1 2528 |
. . . . . . 7
  
DECID  |
| 3 | 1, 2 | nfan 1579 |
. . . . . 6
   Markov 
DECID
  |
| 4 | | simpr 110 |
. . . . . . . . 9
   Markov 
DECID

   |
| 5 | | 0lt2o 6499 |
. . . . . . . . . . . 12
 |
| 6 | 5 | a1i 9 |
. . . . . . . . . . 11
   DECID

  |
| 7 | | 1lt2o 6500 |
. . . . . . . . . . . 12
 |
| 8 | 7 | a1i 9 |
. . . . . . . . . . 11
   DECID
   |
| 9 | | rsp 2544 |
. . . . . . . . . . . 12
 
DECID
 DECID    |
| 10 | 9 | imp 124 |
. . . . . . . . . . 11
   DECID
 DECID   |
| 11 | 6, 8, 10 | ifcldcd 3597 |
. . . . . . . . . 10
   DECID
        |
| 12 | 11 | adantll 476 |
. . . . . . . . 9
   Markov 
DECID

        |
| 13 | | eqid 2196 |
. . . . . . . . . 10
               |
| 14 | 13 | fvmpt2 5645 |
. . . . . . . . 9
                          |
| 15 | 4, 12, 14 | syl2anc 411 |
. . . . . . . 8
   Markov 
DECID

                   |
| 16 | 15 | eqeq1d 2205 |
. . . . . . 7
   Markov 
DECID

            
  
 
   |
| 17 | | 1n0 6490 |
. . . . . . . . . 10
 |
| 18 | 17 | nesymi 2413 |
. . . . . . . . 9
 |
| 19 | | iftrue 3566 |
. . . . . . . . . 10
        |
| 20 | 19 | eqeq1d 2205 |
. . . . . . . . 9
      
   |
| 21 | 18, 20 | mtbiri 676 |
. . . . . . . 8
        |
| 22 | 21 | con2i 628 |
. . . . . . 7
        |
| 23 | 16, 22 | biimtrdi 163 |
. . . . . 6
   Markov 
DECID

                |
| 24 | 3, 23 | ralimdaa 2563 |
. . . . 5
  Markov

DECID   
           
   |
| 25 | 24 | con3d 632 |
. . . 4
  Markov

DECID   

              |
| 26 | 25 | 3impia 1202 |
. . 3
  Markov

DECID 


             |
| 27 | | mptexg 5787 |
. . . . 5
 Markov          |
| 28 | 27 | 3ad2ant1 1020 |
. . . 4
  Markov

DECID 


        |
| 29 | | ismkv 7219 |
. . . . . 6
 Markov  Markov                        |
| 30 | 29 | ibi 176 |
. . . . 5
 Markov                       |
| 31 | 30 | 3ad2ant1 1020 |
. . . 4
  Markov

DECID 

        
   

        |
| 32 | | nfra1 2528 |
. . . . . . 7
  
 |
| 33 | 32 | nfn 1672 |
. . . . . 6
   |
| 34 | 1, 2, 33 | nf3an 1580 |
. . . . 5
   Markov 
DECID
   |
| 35 | 11 | 3ad2antl2 1162 |
. . . . 5
   Markov 
DECID
       
  |
| 36 | 34, 35, 13 | fmptdf 5719 |
. . . 4
  Markov

DECID 


            |
| 37 | | feq1 5390 |
. . . . . 6
       
    

             |
| 38 | | nfmpt1 4126 |
. . . . . . . . . 10
          |
| 39 | 38 | nfeq2 2351 |
. . . . . . . . 9


       |
| 40 | | fveq1 5557 |
. . . . . . . . . 10
       
                 |
| 41 | 40 | eqeq1d 2205 |
. . . . . . . . 9
       
    
              |
| 42 | 39, 41 | ralbid 2495 |
. . . . . . . 8
       
 
   
               |
| 43 | 42 | notbid 668 |
. . . . . . 7
       
     

              |
| 44 | 40 | eqeq1d 2205 |
. . . . . . . 8
       
                   |
| 45 | 39, 44 | rexbid 2496 |
. . . . . . 7
       
 
                   |
| 46 | 43, 45 | imbi12d 234 |
. . . . . 6
       
            
            

               |
| 47 | 37, 46 | imbi12d 234 |
. . . . 5
       
                                                             |
| 48 | 47 | spcgv 2851 |
. . . 4
                 
   

                                                |
| 49 | 28, 31, 36, 48 | syl3c 63 |
. . 3
  Markov

DECID 

            

              |
| 50 | 26, 49 | mpd 13 |
. 2
  Markov

DECID 


             |
| 51 | | simpr 110 |
. . . . . 6
   Markov 
DECID
     |
| 52 | 51, 35, 14 | syl2anc 411 |
. . . . 5
   Markov 
DECID
                     |
| 53 | 52 | eqeq1d 2205 |
. . . 4
   Markov 
DECID
              
        |
| 54 | 9 | 3ad2ant2 1021 |
. . . . . . 7
  Markov

DECID 


DECID    |
| 55 | 54 | imp 124 |
. . . . . 6
   Markov 
DECID
  
DECID   |
| 56 | 17 | neii 2369 |
. . . . . . . . 9
 |
| 57 | | simpr 110 |
. . . . . . . . . . 11
    Markov  DECID    
  |
| 58 | 57 | iffalsed 3571 |
. . . . . . . . . 10
    Markov  DECID    
  
 
  |
| 59 | 58 | eqeq1d 2205 |
. . . . . . . . 9
    Markov  DECID    
     
   |
| 60 | 56, 59 | mtbiri 676 |
. . . . . . . 8
    Markov  DECID    
    
  |
| 61 | 60 | ex 115 |
. . . . . . 7
   Markov 
DECID
   
    
   |
| 62 | 61 | con2d 625 |
. . . . . 6
   Markov 
DECID
            |
| 63 | | notnotrdc 844 |
. . . . . 6
DECID     |
| 64 | 55, 62, 63 | sylsyld 58 |
. . . . 5
   Markov 
DECID
            |
| 65 | 64, 19 | impbid1 142 |
. . . 4
   Markov 
DECID
            |
| 66 | 53, 65 | bitrd 188 |
. . 3
   Markov 
DECID
              
   |
| 67 | 34, 66 | rexbida 2492 |
. 2
  Markov

DECID 

 
               |
| 68 | 50, 67 | mpbid 147 |
1
  Markov

DECID 


  |