| Step | Hyp | Ref
| Expression |
| 1 | | 1zzd 11408 |
. . . . 5
   
             |
| 2 | | ballotth.m |
. . . . . . . 8
 |
| 3 | | ballotth.n |
. . . . . . . 8
 |
| 4 | | nnaddcl 11042 |
. . . . . . . 8
 
     |
| 5 | 2, 3, 4 | mp2an 708 |
. . . . . . 7
   |
| 6 | 5 | nnzi 11401 |
. . . . . 6
   |
| 7 | 6 | a1i 11 |
. . . . 5
   
               |
| 8 | | ballotth.o |
. . . . . . . . 9
     
        |
| 9 | | ballotth.p |
. . . . . . . . 9
              |
| 10 | | ballotth.f |
. . . . . . . . 9
          
                |
| 11 | | ballotth.e |
. . . . . . . . 9
                   |
| 12 | | ballotth.mgtn |
. . . . . . . . 9
 |
| 13 | | ballotth.i |
. . . . . . . . 9
   inf     
               |
| 14 | | ballotth.s |
. . . . . . . . 9
                              |
| 15 | 2, 3, 8, 9, 10, 11, 12, 13, 14 | ballotlemsdom 30573 |
. . . . . . . 8
   
                       |
| 16 | | elfzelz 12342 |
. . . . . . . 8
            
 
          |
| 17 | 15, 16 | syl 17 |
. . . . . . 7
   
                 |
| 18 | 17 | 3adant3 1081 |
. . . . . 6
   
                     |
| 19 | 18, 1 | zsubcld 11487 |
. . . . 5
   
                       |
| 20 | 2, 3, 8, 9, 10, 11, 12, 13, 14 | ballotlemsgt1 30572 |
. . . . . 6
   
          
          |
| 21 | | zltlem1 11430 |
. . . . . . 7
                                 |
| 22 | 21 | biimpa 501 |
. . . . . 6
                    
            |
| 23 | 1, 18, 20, 22 | syl21anc 1325 |
. . . . 5
   
          
            |
| 24 | 18 | zred 11482 |
. . . . . . 7
   
                     |
| 25 | | 1red 10055 |
. . . . . . 7
   
             |
| 26 | 24, 25 | resubcld 10458 |
. . . . . 6
   
                       |
| 27 | | simp1 1061 |
. . . . . . . 8
   
          
    |
| 28 | 2, 3, 8, 9, 10, 11, 12, 13 | ballotlemiex 30563 |
. . . . . . . . 9
                             |
| 29 | 28 | simpld 475 |
. . . . . . . 8
          
    |
| 30 | | elfzelz 12342 |
. . . . . . . 8
                 |
| 31 | 27, 29, 30 | 3syl 18 |
. . . . . . 7
   
                 |
| 32 | 31 | zred 11482 |
. . . . . 6
   
                 |
| 33 | 7 | zred 11482 |
. . . . . 6
   
               |
| 34 | | elfzelz 12342 |
. . . . . . . . . . . 12
         |
| 35 | 34 | 3ad2ant2 1083 |
. . . . . . . . . . 11
   
          
  |
| 36 | | elfzle1 12344 |
. . . . . . . . . . . 12
         |
| 37 | 36 | 3ad2ant2 1083 |
. . . . . . . . . . 11
   
          
  |
| 38 | 35 | zred 11482 |
. . . . . . . . . . . 12
   
          
  |
| 39 | | simp3 1063 |
. . . . . . . . . . . 12
   
                 |
| 40 | 38, 32, 39 | ltled 10185 |
. . . . . . . . . . 11
   
                 |
| 41 | | elfz4 12335 |
. . . . . . . . . . 11
      
 
     
          |
| 42 | 1, 31, 35, 37, 40, 41 | syl32anc 1334 |
. . . . . . . . . 10
   
          
          |
| 43 | 2, 3, 8, 9, 10, 11, 12, 13, 14 | ballotlemsel1i 30574 |
. . . . . . . . . 10
   
                           |
| 44 | 27, 42, 43 | syl2anc 693 |
. . . . . . . . 9
   
                             |
| 45 | | elfzle2 12345 |
. . . . . . . . 9
                
              |
| 46 | 44, 45 | syl 17 |
. . . . . . . 8
   
                  
      |
| 47 | | zlem1lt 11429 |
. . . . . . . . 9
                                             |
| 48 | 18, 31, 47 | syl2anc 693 |
. . . . . . . 8
   
                                         |
| 49 | 46, 48 | mpbid 222 |
. . . . . . 7
   
                           |
| 50 | 26, 32, 49 | ltled 10185 |
. . . . . 6
   
                    
      |
| 51 | | elfzle2 12345 |
. . . . . . 7
                   |
| 52 | 27, 29, 51 | 3syl 18 |
. . . . . 6
   
              
    |
| 53 | 26, 32, 33, 50, 52 | letrd 10194 |
. . . . 5
   
                    
    |
| 54 | | elfz4 12335 |
. . . . 5
                                                           |
| 55 | 1, 7, 19, 23, 53, 54 | syl32anc 1334 |
. . . 4
   
                             |
| 56 | | biid 251 |
. . . . . . . . 9
              
                |
| 57 | 49, 56 | sylibr 224 |
. . . . . . . 8
   
                           |
| 58 | 2, 3, 8, 9, 10, 11, 12, 13 | ballotlemi 30562 |
. . . . . . . . . 10
       inf     
               |
| 59 | 58 | breq2d 4665 |
. . . . . . . . 9
                 
          inf                      |
| 60 | 59 | 3ad2ant1 1082 |
. . . . . . . 8
   
                                    inf                  
   |
| 61 | 57, 60 | mpbid 222 |
. . . . . . 7
   
                    
inf                     |
| 62 | | ltso 10118 |
. . . . . . . . . 10
 |
| 63 | 62 | a1i 11 |
. . . . . . . . 9
     |
| 64 | 2, 3, 8, 9, 10, 11, 12, 13 | ballotlemsup 30566 |
. . . . . . . . 9
                     
 
                      |
| 65 | 63, 64 | inflb 8395 |
. . . . . . . 8
                                       
inf                      |
| 66 | 65 | con2d 129 |
. . . . . . 7
             
inf                  
                             |
| 67 | 27, 61, 66 | sylc 65 |
. . . . . 6
   
                                       |
| 68 | | fveq2 6191 |
. . . . . . . 8
                                       |
| 69 | 68 | eqeq1d 2624 |
. . . . . . 7
                                         |
| 70 | 69 | elrab 3363 |
. . . . . 6
               
          
                                      |
| 71 | 67, 70 | sylnib 318 |
. . . . 5
   
                                                 |
| 72 | | imnan 438 |
. . . . 5
                                                                           |
| 73 | 71, 72 | sylibr 224 |
. . . 4
   
                           
                     |
| 74 | 55, 73 | mpd 15 |
. . 3
   
                               |
| 75 | 74 | neqned 2801 |
. 2
   
                               |
| 76 | | ballotth.r |
. . . . . . . . . 10
             |
| 77 | 2, 3, 8, 9, 10, 11, 12, 13, 14, 76 | ballotlemro 30584 |
. . . . . . . . 9
         |
| 78 | 77 | adantr 481 |
. . . . . . . 8
   
               |
| 79 | | elfzelz 12342 |
. . . . . . . . 9
           |
| 80 | 79 | adantl 482 |
. . . . . . . 8
   
           |
| 81 | 2, 3, 8, 9, 10, 78, 80 | ballotlemfelz 30552 |
. . . . . . 7
   
                       |
| 82 | 81 | zcnd 11483 |
. . . . . 6
   
                       |
| 83 | 82 | negeq0d 10384 |
. . . . 5
   
                                      |
| 84 | | eqid 2622 |
. . . . . . 7
                       
           |
| 85 | 2, 3, 8, 9, 10, 11, 12, 13, 14, 76, 84 | ballotlemfrceq 30590 |
. . . . . 6
   
                                          |
| 86 | 85 | eqeq1d 2624 |
. . . . 5
   
                                            |
| 87 | 83, 86 | bitr4d 271 |
. . . 4
   
                                           |
| 88 | 87 | necon3bid 2838 |
. . 3
   
                                           |
| 89 | 27, 42, 88 | syl2anc 693 |
. 2
   
                                             |
| 90 | 75, 89 | mpbird 247 |
1
   
                         |