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Mathbox for Norm Megill |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > opexmid | Structured version Visualization version GIF version |
Description: Law of excluded middle for orthoposets. (chjo 31273 analog.) (Contributed by NM, 13-Sep-2011.) |
Ref | Expression |
---|---|
opexmid.b | β’ π΅ = (BaseβπΎ) |
opexmid.o | β’ β₯ = (ocβπΎ) |
opexmid.j | β’ β¨ = (joinβπΎ) |
opexmid.u | β’ 1 = (1.βπΎ) |
Ref | Expression |
---|---|
opexmid | β’ ((πΎ β OP β§ π β π΅) β (π β¨ ( β₯ βπ)) = 1 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opexmid.b | . . . 4 β’ π΅ = (BaseβπΎ) | |
2 | eqid 2726 | . . . 4 β’ (leβπΎ) = (leβπΎ) | |
3 | opexmid.o | . . . 4 β’ β₯ = (ocβπΎ) | |
4 | opexmid.j | . . . 4 β’ β¨ = (joinβπΎ) | |
5 | eqid 2726 | . . . 4 β’ (meetβπΎ) = (meetβπΎ) | |
6 | eqid 2726 | . . . 4 β’ (0.βπΎ) = (0.βπΎ) | |
7 | opexmid.u | . . . 4 β’ 1 = (1.βπΎ) | |
8 | 1, 2, 3, 4, 5, 6, 7 | oposlem 38563 | . . 3 β’ ((πΎ β OP β§ π β π΅ β§ π β π΅) β ((( β₯ βπ) β π΅ β§ ( β₯ β( β₯ βπ)) = π β§ (π(leβπΎ)π β ( β₯ βπ)(leβπΎ)( β₯ βπ))) β§ (π β¨ ( β₯ βπ)) = 1 β§ (π(meetβπΎ)( β₯ βπ)) = (0.βπΎ))) |
9 | 8 | 3anidm23 1418 | . 2 β’ ((πΎ β OP β§ π β π΅) β ((( β₯ βπ) β π΅ β§ ( β₯ β( β₯ βπ)) = π β§ (π(leβπΎ)π β ( β₯ βπ)(leβπΎ)( β₯ βπ))) β§ (π β¨ ( β₯ βπ)) = 1 β§ (π(meetβπΎ)( β₯ βπ)) = (0.βπΎ))) |
10 | 9 | simp2d 1140 | 1 β’ ((πΎ β OP β§ π β π΅) β (π β¨ ( β₯ βπ)) = 1 ) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β§ wa 395 β§ w3a 1084 = wceq 1533 β wcel 2098 class class class wbr 5141 βcfv 6536 (class class class)co 7404 Basecbs 17151 lecple 17211 occoc 17212 joincjn 18274 meetcmee 18275 0.cp0 18386 1.cp1 18387 OPcops 38553 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-ext 2697 ax-nul 5299 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-sb 2060 df-clab 2704 df-cleq 2718 df-clel 2804 df-ne 2935 df-ral 3056 df-rab 3427 df-v 3470 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-nul 4318 df-if 4524 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-br 5142 df-dm 5679 df-iota 6488 df-fv 6544 df-ov 7407 df-oposet 38557 |
This theorem is referenced by: dih1 40668 |
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