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| Description: Lemma for 5-quantifier AC of Kurt Maes, Th. 4, part of 3 => 4. |
| Ref | Expression |
|---|---|
| kmlem8.1 |
|
| Ref | Expression |
|---|---|
| kmlem11 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | difeq1 1582 |
. . . . . . . . 9
| |
| 2 | sneq 1816 |
. . . . . . . . . . . 12
| |
| 3 | 2 | difeq2d 1588 |
. . . . . . . . . . 11
|
| 4 | 3 | unieqd 1929 |
. . . . . . . . . 10
|
| 5 | 4 | difeq2d 1588 |
. . . . . . . . 9
|
| 6 | 1, 5 | eqtrd 1128 |
. . . . . . . 8
|
| 7 | 6 | cleq1d 1109 |
. . . . . . 7
|
| 8 | 7 | negbid 463 |
. . . . . 6
|
| 9 | 8 | cbvralv 1333 |
. . . . 5
|
| 10 | 6 | ineq1d 1644 |
. . . . . . . 8
|
| 11 | 10 | eleq2d 1156 |
. . . . . . 7
|
| 12 | 11 | bieudv 1013 |
. . . . . 6
|
| 13 | 12 | cbvralv 1333 |
. . . . 5
|
| 14 | 9, 13 | imbi12i 163 |
. . . 4
|
| 15 | kmlem8.1 |
. . . . . . . . . . . 12
| |
| 16 | 15 | kmlem10 3589 |
. . . . . . . . . . 11
|
| 17 | 16 | ineq1d 1644 |
. . . . . . . . . 10
|
| 18 | in12 1651 |
. . . . . . . . . . 11
| |
| 19 | incom 1636 |
. . . . . . . . . . 11
| |
| 20 | 18, 19 | eqtr 1119 |
. . . . . . . . . 10
|
| 21 | 17, 20 | syl5req 1137 |
. . . . . . . . 9
|
| 22 | 21 | eleq2d 1156 |
. . . . . . . 8
|
| 23 | 22 | bieudv 1013 |
. . . . . . 7
|
| 24 | ax-1 3 |
. . . . . . 7
| |
| 25 | 23, 24 | syl6bi 187 |
. . . . . 6
|
| 26 | 25 | r19.20i 1253 |
. . . . 5
|
| 27 | 26 | syl3 18 |
. . . 4
|
| 28 | 14, 27 | sylbi 174 |
. . 3
|
| 29 | 28 | com12 13 |
. 2
|
| 30 | raleq 1324 |
. . . . 5
| |
| 31 | 15, 30 | ax-mp 6 |
. . . 4
|
| 32 | df-ral 1205 |
. . . 4
| |
| 33 | visset 1350 |
. . . . . . . . 9
| |
| 34 | cleq1 1107 |
. . . . . . . . . 10
| |
| 35 | 34 | birexdv 1220 |
. . . . . . . . 9
|
| 36 | 33, 35 | elab 1415 |
. . . . . . . 8
|
| 37 | 36 | imbi1i 161 |
. . . . . . 7
|
| 38 | r19.23v 1282 |
. . . . . . 7
| |
| 39 | 37, 38 | bitr4 154 |
. . . . . 6
|
| 40 | 39 | bial 695 |
. . . . 5
|
| 41 | ralcom4 1360 |
. . . . . 6
|