| Step | Hyp | Ref
| Expression |
| 1 | | nndi 6544 |
. . . . . . . 8
 
             |
| 2 | 1 | adantl 277 |
. . . . . . 7
      
   


   
              |
| 3 | | simplll 533 |
. . . . . . . 8
   


   


     |
| 4 | | simprlr 538 |
. . . . . . . . 9
   


   


     |
| 5 | | pinn 7376 |
. . . . . . . . 9
   |
| 6 | 4, 5 | syl 14 |
. . . . . . . 8
   


   


     |
| 7 | | nnmcl 6539 |
. . . . . . . 8
 
     |
| 8 | 3, 6, 7 | syl2anc 411 |
. . . . . . 7
   


   


       |
| 9 | | simpllr 534 |
. . . . . . . . 9
   


   


     |
| 10 | | pinn 7376 |
. . . . . . . . 9
   |
| 11 | 9, 10 | syl 14 |
. . . . . . . 8
   


   


     |
| 12 | | simprll 537 |
. . . . . . . 8
   


   


     |
| 13 | | nnmcl 6539 |
. . . . . . . 8
 
     |
| 14 | 11, 12, 13 | syl2anc 411 |
. . . . . . 7
   


   


       |
| 15 | | simplrr 536 |
. . . . . . . . 9
   


   


     |
| 16 | | pinn 7376 |
. . . . . . . . 9
   |
| 17 | 15, 16 | syl 14 |
. . . . . . . 8
   


   


     |
| 18 | | simprrr 540 |
. . . . . . . . 9
   


   


     |
| 19 | | pinn 7376 |
. . . . . . . . 9
   |
| 20 | 18, 19 | syl 14 |
. . . . . . . 8
   


   


     |
| 21 | | nnmcl 6539 |
. . . . . . . 8
 
     |
| 22 | 17, 20, 21 | syl2anc 411 |
. . . . . . 7
   


   


       |
| 23 | | nnacl 6538 |
. . . . . . . 8
 
     |
| 24 | 23 | adantl 277 |
. . . . . . 7
      
   


   
      |
| 25 | | nnmcom 6547 |
. . . . . . . 8
 
       |
| 26 | 25 | adantl 277 |
. . . . . . 7
      
   


   
        |
| 27 | 2, 8, 14, 22, 24, 26 | caovdir2d 6100 |
. . . . . 6
   


   


                             |
| 28 | | nnmass 6545 |
. . . . . . . . 9
 
           |
| 29 | 28 | adantl 277 |
. . . . . . . 8
      
   


   
            |
| 30 | | nnmcl 6539 |
. . . . . . . . 9
 
     |
| 31 | 30 | adantl 277 |
. . . . . . . 8
      
   


   
      |
| 32 | 3, 6, 17, 26, 29, 20, 31 | caov4d 6108 |
. . . . . . 7
   


   


                 |
| 33 | 11, 12, 17, 26, 29, 20, 31 | caov4d 6108 |
. . . . . . 7
   


   


                 |
| 34 | 32, 33 | oveq12d 5940 |
. . . . . 6
   


   


                                 |
| 35 | 27, 34 | eqtrd 2229 |
. . . . 5
   


   


                             |
| 36 | | oveq1 5929 |
. . . . . 6
                   |
| 37 | | oveq2 5930 |
. . . . . 6
                   |
| 38 | 36, 37 | oveqan12d 5941 |
. . . . 5
      
                                  |
| 39 | 35, 38 | sylan9eq 2249 |
. . . 4
      
   


       
                                |
| 40 | | nnmcl 6539 |
. . . . . . . 8
 
     |
| 41 | 11, 6, 40 | syl2anc 411 |
. . . . . . 7
   


   


       |
| 42 | | simplrl 535 |
. . . . . . . 8
   


   


     |
| 43 | | nnmcl 6539 |
. . . . . . . 8
 
     |
| 44 | 42, 20, 43 | syl2anc 411 |
. . . . . . 7
   


   


       |
| 45 | | simprrl 539 |
. . . . . . . 8
   


   


     |
| 46 | | nnmcl 6539 |
. . . . . . . 8
 
     |
| 47 | 17, 45, 46 | syl2anc 411 |
. . . . . . 7
   


   


       |
| 48 | | nndi 6544 |
. . . . . . 7
    
 
                            |
| 49 | 41, 44, 47, 48 | syl3anc 1249 |
. . . . . 6
   


   


                             |
| 50 | 11, 6, 42, 26, 29, 20, 31 | caov4d 6108 |
. . . . . . 7
   


   


                 |
| 51 | 11, 6, 17, 26, 29, 45, 31 | caov4d 6108 |
. . . . . . 7
   


   


                 |
| 52 | 50, 51 | oveq12d 5940 |
. . . . . 6
   


   


                                 |
| 53 | 49, 52 | eqtrd 2229 |
. . . . 5
   


   


                             |
| 54 | 53 | adantr 276 |
. . . 4
      
   


       
                                |
| 55 | 39, 54 | eqtr4d 2232 |
. . 3
      
   


       
                            |
| 56 | | nnacl 6538 |
. . . . . 6
    
          |
| 57 | 8, 14, 56 | syl2anc 411 |
. . . . 5
   


   


           |
| 58 | | mulpiord 7384 |
. . . . . . . 8
 
       |
| 59 | | mulclpi 7395 |
. . . . . . . 8
 
     |
| 60 | 58, 59 | eqeltrrd 2274 |
. . . . . . 7
 
     |
| 61 | 60 | ad2ant2l 508 |
. . . . . 6
      
    |
| 62 | 61 | ad2ant2r 509 |
. . . . 5
   


   


       |
| 63 | | nnacl 6538 |
. . . . . 6
    
          |
| 64 | 44, 47, 63 | syl2anc 411 |
. . . . 5
   


   


           |
| 65 | | mulpiord 7384 |
. . . . . . . 8
 
       |
| 66 | | mulclpi 7395 |
. . . . . . . 8
 
     |
| 67 | 65, 66 | eqeltrrd 2274 |
. . . . . . 7
 
     |
| 68 | 67 | ad2ant2l 508 |
. . . . . 6
      
    |
| 69 | 68 | ad2ant2l 508 |
. . . . 5
   


   


       |
| 70 | | enq0breq 7503 |
. . . . 5
                      
           
~Q0           
                       |
| 71 | 57, 62, 64, 69, 70 | syl22anc 1250 |
. . . 4
   


   


              
~Q0           
                       |
| 72 | 71 | adantr 276 |
. . 3
      
   


       
                 
~Q0           
                       |
| 73 | 55, 72 | mpbird 167 |
. 2
      
   


       
                
~Q0              |
| 74 | 73 | ex 115 |
1
   


   


                        
~Q0               |