Proof of Theorem ax11eq
| Step | Hyp | Ref
| Expression |
| 1 | | 19.26 1063 |
. . 3
           |
| 2 | | equid 1122 |
. . . . . . . 8
 |
| 3 | 2 | a1i 8 |
. . . . . . 7
   |
| 4 | 3 | ax-gen 960 |
. . . . . 6
     |
| 5 | 4 | a1i 8 |
. . . . 5
       |
| 6 | | equequ1 1130 |
. . . . . . . . 9
     |
| 7 | | equequ2 1131 |
. . . . . . . . 9
     |
| 8 | 6, 7 | sylan9bb 538 |
. . . . . . . 8
       |
| 9 | 8 | a4s 981 |
. . . . . . 7
         |
| 10 | | hba1 1000 |
. . . . . . . 8
             |
| 11 | 9 | imbi2d 610 |
. . . . . . . 8
             |
| 12 | 10, 11 | albid 1100 |
. . . . . . 7
                 |
| 13 | 9, 12 | imbi12d 624 |
. . . . . 6
                     |
| 14 | 13 | adantr 389 |
. . . . 5
                          |
| 15 | 5, 14 | mpbii 193 |
. . . 4
                  |
| 16 | 15 | exp32 377 |
. . 3
                  |
| 17 | 1, 16 | sylbir 201 |
. 2
                  |
| 18 | | equequ1 1130 |
. . . . . . 7
     |
| 19 | 18 | ad2antll 407 |
. . . . . 6
   
       |
| 20 | | ax-12 965 |
. . . . . . . . 9
          |
| 21 | 20 | impcom 351 |
. . . . . . . 8
          |
| 22 | 21 | adantrr 395 |
. . . . . . 7
   
        |
| 23 | | equtrr 1128 |
. . . . . . . 8
     |
| 24 | 23 | 19.20i 989 |
. . . . . . 7
        |
| 25 | 22, 24 | syl6 22 |
. . . . . 6
   
           |
| 26 | 19, 25 | sylbid 203 |
. . . . 5
   
           |
| 27 | 26 | adantll 392 |
. . . 4
                  |
| 28 | | equequ1 1130 |
. . . . . . 7
     |
| 29 | 28 | a4s 981 |
. . . . . 6
      |
| 30 | 29 | imbi2d 610 |
. . . . . . 7
          |
| 31 | 30 | dral2 1151 |
. . . . . 6
              |
| 32 | 29, 31 | imbi12d 624 |
. . . . 5
                  |
| 33 | 32 | ad2antrr 404 |
. . . 4
                          |
| 34 | 27, 33 | mpbid 195 |
. . 3
                  |
| 35 | 34 | exp32 377 |
. 2
                  |
| 36 | | equequ2 1131 |
. . . . . . 7
     |
| 37 | 36 | ad2antll 407 |
. . . . . 6
           |
| 38 | | ax-12 965 |
. . . . . . . . 9
          |
| 39 | 38 | imp 350 |
. . . . . . . 8
          |
| 40 | 39 | adantrr 395 |
. . . . . . 7
            |
| 41 | 36 | biimprcd 156 |
. . . . . . . 8
     |
| 42 | 41 | 19.20i 989 |
. . . . . . 7
        |
| 43 | 40, 42 | syl6 22 |
. . . . . 6
               |
| 44 | 37, 43 | sylbid 203 |
. . . . 5
               |
| 45 | 44 | adantlr 393 |
. . . 4
                  |
| 46 | 7 | a4s 981 |
. . . . . 6
      |
| 47 | 46 | imbi2d 610 |
. . . . . . 7
          |
| 48 | 47 | dral2 1151 |
. . . . . 6
              |
| 49 | 46, 48 | imbi12d 624 |
. . . . 5
                  |
| 50 | 49 | ad2antlr 405 |
. . . 4
                          |
| 51 | 45, 50 | mpbid 195 |
. . 3
                  |
| 52 | 51 | exp32 377 |
. 2
                  |
| 53 | | a9e 1121 |
. . . . 5
  |
| 54 | | a9e 1121 |
. . . . . . 7
  |
| 55 | | ax-1 4 |
. . . . . . . . . . 11
     |
| 56 | 55 | 19.21aiv 1281 |
. . . . . . . . . 10
       |
| 57 | | equequ1 1130 |
. . . . . . . . . . . . 13
     |
| 58 | | equequ2 1131 |
. . . . . . . . . . . . 13
     |
| 59 | 57, 58 | sylan9bb 538 |
. . . . . . . . . . . 12
       |
| 60 | 59 | adantl 388 |
. . . . . . . . . . 11
             |
| 61 | | dveeq2 1208 |
. . . . . . . . . . . . . . 15
       |
| 62 | | dveeq2 1208 |
. . . . . . . . . . . . . . 15
       |
| 63 | 61, 62 | im2anan9 561 |
. . . . . . . . . . . . . 14
       |