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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 |
|---|---|
| kmlem10 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snssi 1851 |
. . . . . . 7
| |
| 2 | ssequn1 1628 |
. . . . . . 7
| |
| 3 | 1, 2 | sylib 173 |
. . . . . 6
|
| 4 | undif2 1762 |
. . . . . 6
| |
| 5 | 3, 4 | syl5req 1137 |
. . . . 5
|
| 6 | iuneq1 2003 |
. . . . 5
| |
| 7 | 5, 6 | syl 12 |
. . . 4
|
| 8 | kmlem4 3583 |
. . . . . . . . . . . 12
| |
| 9 | incom 1636 |
. . . . . . . . . . . 12
| |
| 10 | 8, 9 | syl5eq 1136 |
. . . . . . . . . . 11
|
| 11 | 10 | exp 291 |
. . . . . . . . . 10
|
| 12 | eldifn 1592 |
. . . . . . . . . . 11
| |
| 13 | elsn 1820 |
. . . . . . . . . . . 12
| |
| 14 | 13 | negbii 162 |
. . . . . . . . . . 11
|
| 15 | 12, 14 | sylib 173 |
. . . . . . . . . 10
|
| 16 | 11, 15 | syl5 22 |
. . . . . . . . 9
|
| 17 | 16 | r19.21aiv 1259 |
. . . . . . . 8
|
| 18 | iuneq2 2006 |
. . . . . . . 8
| |
| 19 | 17, 18 | syl 12 |
. . . . . . 7
|
| 20 | iun0 2028 |
. . . . . . 7
| |
| 21 | 19, 20 | syl6eq 1140 |
. . . . . 6
|
| 22 | 21 | uneq2d 1611 |
. . . . 5
|
| 23 | iunxun 2035 |
. . . . . 6
| |
| 24 | visset 1350 |
. . . . . . . 8
| |
| 25 | difeq1 1582 |
. . . . . . . . . 10
| |
| 26 | sneq 1816 |
. . . . . . . . . . . . 13
| |
| 27 | 26 | difeq2d 1588 |
. . . . . . . . . . . 12
|
| 28 | 27 | unieqd 1929 |
. . . . . . . . . . 11
|
| 29 | 28 | difeq2d 1588 |
. . . . . . . . . 10
|
| 30 | 25, 29 | eqtrd 1128 |
. . . . . . . . 9
|
| 31 | 30 | ineq2d 1645 |
. . . . . . . 8
|
| 32 | 24, 31 | iunxsn 2034 |
. . . . . . 7
|
| 33 | 32 | uneq1i 1607 |
. . . . . 6
|
| 34 | 23, 33 | eqtr 1119 |
. . . . 5
|
| 35 | 22, 34 | syl5eq 1136 |
. . . 4
|
| 36 | 7, 35 | eqtrd 1128 |
. . 3
|
| 37 | un0 1721 |
. . . 4
| |
| 38 | difss 1596 |
. . . . 5
| |
| 39 | sseqin2 1656 |
. . . . 5
| |
| 40 | 38, 39 | mpbi 164 |
. . . 4
|
| 41 | 37, 40 | eqtr 1119 |
. . 3
|
| 42 | 36, 41 | syl6eq 1140 |
. 2
|
| 43 | kmlem8.1 |
. . . . . 6
| |
| 44 | 43 | unieqi 1928 |
. . . . 5
|
| 45 | visset 1350 |
. . . . . . 7
| |
| 46 | difexg 1703 |
. . . . . . 7
| |
| 47 | 45, 46 | ax-mp 6 |
. . . . . 6
|
| 48 | 47 | dfiun2 2014 |
. . . . 5
|
| 49 | 44, 48 | eqtr4 1122 |
. . . 4
|
| 50 | 49 | ineq2i 1642 |
. . 3
|
| 51 | iunin2 2030 |
. . 3
| |
| 52 | 50, 51 | eqtr4 1122 |
. 2
|
| 53 | 42, 52 | syl5eq 1136 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: kmlem11 3590 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-sn 1811 df-uni 1920 df-iun 1996 |