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| Description: Lemma for 5-quantifier AC of Kurt Maes, Th. 4, part of 3 => 4. |
| Ref | Expression |
|---|---|
| kmlem9.1 |
|
| Ref | Expression |
|---|---|
| kmlem11 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snssi 2463 |
. . . . . . 7
| |
| 2 | ssequn1 2197 |
. . . . . . 7
| |
| 3 | 1, 2 | sylib 198 |
. . . . . 6
|
| 4 | undif2 2338 |
. . . . . 6
| |
| 5 | 3, 4 | syl5req 1518 |
. . . . 5
|
| 6 | iuneq1 2571 |
. . . . 5
| |
| 7 | 5, 6 | syl 10 |
. . . 4
|
| 8 | kmlem4 4751 |
. . . . . . . . . . . 12
| |
| 9 | incom 2205 |
. . . . . . . . . . . 12
| |
| 10 | 8, 9 | syl5eq 1517 |
. . . . . . . . . . 11
|
| 11 | 10 | ex 373 |
. . . . . . . . . 10
|
| 12 | eldifsn 2459 |
. . . . . . . . . . 11
| |
| 13 | 12 | pm3.27bi 326 |
. . . . . . . . . 10
|
| 14 | 11, 13 | syl5 21 |
. . . . . . . . 9
|
| 15 | 14 | r19.21aiv 1711 |
. . . . . . . 8
|
| 16 | iuneq2 2574 |
. . . . . . . 8
| |
| 17 | 15, 16 | syl 10 |
. . . . . . 7
|
| 18 | iun0 2600 |
. . . . . . 7
| |
| 19 | 17, 18 | syl6eq 1521 |
. . . . . 6
|
| 20 | 19 | uneq2d 2181 |
. . . . 5
|
| 21 | iunxun 2610 |
. . . . . 6
| |
| 22 | visset 1810 |
. . . . . . . 8
| |
| 23 | difeq1 2150 |
. . . . . . . . . 10
| |
| 24 | sneq 2414 |
. . . . . . . . . . . . 13
| |
| 25 | 24 | difeq2d 2156 |
. . . . . . . . . . . 12
|
| 26 | 25 | unieqd 2508 |
. . . . . . . . . . 11
|
| 27 | 26 | difeq2d 2156 |
. . . . . . . . . 10
|
| 28 | 23, 27 | eqtrd 1505 |
. . . . . . . . 9
|
| 29 | 28 | ineq2d 2214 |
. . . . . . . 8
|
| 30 | 22, 29 | iunxsn 2608 |
. . . . . . 7
|
| 31 | 30 | uneq1i 2177 |
. . . . . 6
|
| 32 | 21, 31 | eqtr 1493 |
. . . . 5
|
| 33 | 20, 32 | syl5eq 1517 |
. . . 4
|
| 34 | 7, 33 | eqtrd 1505 |
. . 3
|
| 35 | un0 2294 |
. . . 4
| |
| 36 | indif 2247 |
. . . 4
| |
| 37 | 35, 36 | eqtr 1493 |
. . 3
|
| 38 | 34, 37 | syl6eq 1521 |
. 2
|
| 39 | kmlem9.1 |
. . . . . 6
| |
| 40 | 39 | unieqi 2507 |
. . . . 5
|
| 41 | visset 1810 |
. . . . . . 7
| |
| 42 | difexg 2718 |
. . . . . . 7
| |
| 43 | 41, 42 | ax-mp 7 |
. . . . . 6
|
| 44 | 43 | dfiun2 2583 |
. . . . 5
|
| 45 | 40, 44 | eqtr4 1496 |
. . . 4
|
| 46 | 45 | ineq2i 2211 |
. . 3
|
| 47 | iunin2 2604 |
. . 3
| |
| 48 | 46, 47 | eqtr4 1496 |
. 2
|
| 49 | 38, 48 | syl5eq 1517 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: kmlem12 4759 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 961 ax-gen 962 ax-8 963 ax-10 965 ax-12 967 ax-17 970 ax-4 972 ax-5o 974 ax-6o 977 ax-9o 1122 ax-10o 1139 ax-16 1209 ax-11o 1217 ax-ext 1458 ax-sep 2699 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 980 df-sb 1171 df-clab 1463 df-cleq 1468 df-clel 1471 df-ne 1585 df-ral 1647 df-rex 1648 df-v 1809 df-dif 2046 df-un 2047 df-in 2048 df-ss 2050 df-nul 2278 df-sn 2409 df-pr 2410 df-uni 2500 df-iun 2564 |