| Step | Hyp | Ref
| Expression |
| 1 | | nosupbnd1.1 |
. . . . . 6
  

       
        
                              
      
           |
| 2 | 1 | nosupno 31849 |
. . . . 5
 
   |
| 3 | 2 | 3ad2ant2 1083 |
. . . 4
         

  
  |
| 4 | | nodmord 31806 |
. . . 4
   |
| 5 | | ordirr 5741 |
. . . 4

  |
| 6 | 3, 4, 5 | 3syl 18 |
. . 3
         

  
  |
| 7 | | simpl3l 1116 |
. . . . 5
   

     

     
    |
| 8 | | ndmfv 6218 |
. . . . . . . 8

      |
| 9 | | 2on 7568 |
. . . . . . . . . . . . 13
 |
| 10 | 9 | elexi 3213 |
. . . . . . . . . . . 12
 |
| 11 | 10 | prid2 4298 |
. . . . . . . . . . 11
    |
| 12 | 11 | nosgnn0i 31812 |
. . . . . . . . . 10
 |
| 13 | | neeq1 2856 |
. . . . . . . . . 10
         
   |
| 14 | 12, 13 | mpbiri 248 |
. . . . . . . . 9
           |
| 15 | 14 | neneqd 2799 |
. . . . . . . 8
           |
| 16 | 8, 15 | syl 17 |
. . . . . . 7

      |
| 17 | 16 | con4i 113 |
. . . . . 6
       |
| 18 | 17 | adantl 482 |
. . . . 5
   

     

     
    |
| 19 | | simpl2l 1114 |
. . . . . . . . . 10
   

     

     
    |
| 20 | 19 | adantr 481 |
. . . . . . . . 9
    

   
        
          |
| 21 | 7 | adantr 481 |
. . . . . . . . 9
    

   
        
          |
| 22 | 20, 21 | sseldd 3604 |
. . . . . . . 8
    

   
        
          |
| 23 | | simprl 794 |
. . . . . . . . 9
    

   
        
          |
| 24 | 20, 23 | sseldd 3604 |
. . . . . . . 8
    

   
        
          |
| 25 | 3 | adantr 481 |
. . . . . . . . . 10
   

     

     
    |
| 26 | 25 | adantr 481 |
. . . . . . . . 9
    

   
        
          |
| 27 | | nodmon 31803 |
. . . . . . . . 9
   |
| 28 | 26, 27 | syl 17 |
. . . . . . . 8
    

   
        
          |
| 29 | | simpl3r 1117 |
. . . . . . . . . 10
   

     

     
      |
| 30 | 29 | adantr 481 |
. . . . . . . . 9
    

   
        
            |
| 31 | | simpll1 1100 |
. . . . . . . . . 10
    

   
        
         
     |
| 32 | | simpll2 1101 |
. . . . . . . . . 10
    

   
        
            |
| 33 | | simpll3 1102 |
. . . . . . . . . 10
    

   
        
        

    |
| 34 | | simpr 477 |
. . . . . . . . . 10
    

   
        
               |
| 35 | 1 | nosupbnd1lem2 31855 |
. . . . . . . . . 10
                         |
| 36 | 31, 32, 33, 34, 35 | syl112anc 1330 |
. . . . . . . . 9
    

   
        
            |
| 37 | 30, 36 | eqtr4d 2659 |
. . . . . . . 8
    

   
        
              |
| 38 | | simplr 792 |
. . . . . . . 8
    

   
        
              |
| 39 | | simprr 796 |
. . . . . . . 8
    

   
        
             |
| 40 | | nolesgn2ores 31825 |
. . . . . . . 8
        
               |
| 41 | 22, 24, 28, 37, 38, 39, 40 | syl321anc 1348 |
. . . . . . 7
    

   
        
          
   |
| 42 | 41 | expr 643 |
. . . . . 6
    

   
        
              |
| 43 | 42 | ralrimiva 2966 |
. . . . 5
   

     

     
  
      
    |
| 44 | | dmeq 5324 |
. . . . . . . 8

  |
| 45 | 44 | eleq2d 2687 |
. . . . . . 7
     |
| 46 | | breq2 4657 |
. . . . . . . . . 10
           |
| 47 | 46 | notbid 308 |
. . . . . . . . 9
           |
| 48 | | reseq1 5390 |
. . . . . . . . . 10
   
   |
| 49 | 48 | eqeq1d 2624 |
. . . . . . . . 9
    
 
 
    |
| 50 | 47, 49 | imbi12d 334 |
. . . . . . . 8
        
        
     |
| 51 | 50 | ralbidv 2986 |
. . . . . . 7
  

  
    

      
     |
| 52 | 45, 51 | anbi12d 747 |
. . . . . 6
  

      
  
     
         |
| 53 | 52 | rspcev 3309 |
. . . . 5
          
    
        
     |
| 54 | 7, 18, 43, 53 | syl12anc 1324 |
. . . 4
   

     

     
  
     
        |
| 55 | 1 | nosupdm 31850 |
. . . . . . . 8
  
  
 
  
  
         |
| 56 | 55 | eleq2d 2687 |
. . . . . . 7
  
   
 
  
  
          |
| 57 | 56 | 3ad2ant1 1082 |
. . . . . 6
         

  

 
  
  
          |
| 58 | | eleq1 2689 |
. . . . . . . . . 10
     |
| 59 | | suceq 5790 |
. . . . . . . . . . . . . 14

  |
| 60 | 59 | reseq2d 5396 |
. . . . . . . . . . . . 13
   
   |
| 61 | 59 | reseq2d 5396 |
. . . . . . . . . . . . 13
   
   |
| 62 | 60, 61 | eqeq12d 2637 |
. . . . . . . . . . . 12
    
   
    |
| 63 | 62 | imbi2d 330 |
. . . . . . . . . . 11
                 
     |
| 64 | 63 | ralbidv 2986 |
. . . . . . . . . 10
            

  
        |
| 65 | 58, 64 | anbi12d 747 |
. . . . . . . . 9
   
      
  
     
         |
| 66 | 65 | rexbidv 3052 |
. . . . . . . 8
    
      
  

     
         |
| 67 | 66 | elabg 3351 |
. . . . . . 7
   
 
      
   

     
         |
| 68 | 3, 27, 67 | 3syl 18 |
. . . . . 6
         

  
               

     
         |
| 69 | 57, 68 | bitrd 268 |
. . . . 5
         

  


     
         |
| 70 | 69 | adantr 481 |
. . . 4
   

     

     
            
      |
| 71 | 54, 70 | mpbird 247 |
. . 3
   

     

     
    |
| 72 | 6, 71 | mtand 691 |
. 2
         

  
      |
| 73 | 72 | neqned 2801 |
1
         

  
      |