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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 2466 |
. . . . . . 7
| |
| 2 | ssequn1 2200 |
. . . . . . 7
| |
| 3 | 1, 2 | sylib 198 |
. . . . . 6
|
| 4 | undif2 2341 |
. . . . . 6
| |
| 5 | 3, 4 | syl5req 1520 |
. . . . 5
|
| 6 | iuneq1 2575 |
. . . . 5
| |
| 7 | 5, 6 | syl 10 |
. . . 4
|
| 8 | kmlem4 4768 |
. . . . . . . . . . . 12
| |
| 9 | incom 2208 |
. . . . . . . . . . . 12
| |
| 10 | 8, 9 | syl5eq 1519 |
. . . . . . . . . . 11
|
| 11 | 10 | ex 373 |
. . . . . . . . . 10
|
| 12 | eldifsn 2462 |
. . . . . . . . . . 11
| |
| 13 | 12 | pm3.27bi 326 |
. . . . . . . . . 10
|
| 14 | 11, 13 | syl5 21 |
. . . . . . . . 9
|
| 15 | 14 | r19.21aiv 1713 |
. . . . . . . 8
|
| 16 | iuneq2 2578 |
. . . . . . . 8
| |
| 17 | 15, 16 | syl 10 |
. . . . . . 7
|
| 18 | iun0 2604 |
. . . . . . 7
| |
| 19 | 17, 18 | syl6eq 1523 |
. . . . . 6
|
| 20 | 19 | uneq2d 2184 |
. . . . 5
|
| 21 | iunxun 2614 |
. . . . . 6
| |
| 22 | visset 1813 |
. . . . . . . 8
| |
| 23 | difeq1 2153 |
. . . . . . . . . 10
| |
| 24 | sneq 2417 |
. . . . . . . . . . . . 13
| |
| 25 | 24 | difeq2d 2159 |
. . . . . . . . . . . 12
|
| 26 | 25 | unieqd 2512 |
. . . . . . . . . . 11
|
| 27 | 26 | difeq2d 2159 |
. . . . . . . . . 10
|
| 28 | 23, 27 | eqtrd 1507 |
. . . . . . . . 9
|
| 29 | 28 | ineq2d 2217 |
. . . . . . . 8
|
| 30 | 22, 29 | iunxsn 2612 |
. . . . . . 7
|
| 31 | 30 | uneq1i 2180 |
. . . . . 6
|
| 32 | 21, 31 | eqtr 1495 |
. . . . 5
|
| 33 | 20, 32 | syl5eq 1519 |
. . . 4
|
| 34 | 7, 33 | eqtrd 1507 |
. . 3
|
| 35 | un0 2297 |
. . . 4
| |
| 36 | indif 2250 |
. . . 4
| |
| 37 | 35, 36 | eqtr 1495 |
. . 3
|
| 38 | 34, 37 | syl6eq 1523 |
. 2
|
| 39 | kmlem9.1 |
. . . . . 6
| |
| 40 | 39 | unieqi 2511 |
. . . . 5
|
| 41 | visset 1813 |
. . . . . . 7
| |
| 42 | difexg 2722 |
. . . . . . 7
| |
| 43 | 41, 42 | ax-mp 7 |
. . . . . 6
|
| 44 | 43 | dfiun2 2587 |
. . . . 5
|
| 45 | 40, 44 | eqtr4 1498 |
. . . 4
|
| 46 | 45 | ineq2i 2214 |
. . 3
|
| 47 | iunin2 2608 |
. . 3
| |
| 48 | 46, 47 | eqtr4 1498 |
. 2
|
| 49 | 38, 48 | syl5eq 1519 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: kmlem12 4776 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-12 968 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-ral 1649 df-rex 1650 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-sn 2412 df-pr 2413 df-uni 2504 df-iun 2568 |