Nearby theorems
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Mathbox for Norm Megill |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > meetat2 | Structured version Visualization version GIF version | ||
| Description: The meet of any element with an atom is either the atom or zero. (Contributed by NM, 30-Aug-2012.) |
| Ref | Expression |
|---|---|
| m.b | β’ π΅ = (BaseβπΎ) |
| m.m | β’ β§ = (meetβπΎ) |
| m.z | β’ 0 = (0.βπΎ) |
| m.a | β’ π΄ = (AtomsβπΎ) |
| Ref | Expression |
|---|---|
| meetat2 | β’ ((πΎ β OL β§ π β π΅ β§ π β π΄) β ((π β§ π) β π΄ β¨ (π β§ π) = 0 )) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | m.b | . . 3 β’ π΅ = (BaseβπΎ) | |
| 2 | m.m | . . 3 β’ β§ = (meetβπΎ) | |
| 3 | m.z | . . 3 β’ 0 = (0.βπΎ) | |
| 4 | m.a | . . 3 β’ π΄ = (AtomsβπΎ) | |
| 5 | 1, 2, 3, 4 | meetat 38161 | . 2 β’ ((πΎ β OL β§ π β π΅ β§ π β π΄) β ((π β§ π) = π β¨ (π β§ π) = 0 )) |
| 6 | eleq1a 2828 | . . . 4 β’ (π β π΄ β ((π β§ π) = π β (π β§ π) β π΄)) | |
| 7 | 6 | 3ad2ant3 1135 | . . 3 β’ ((πΎ β OL β§ π β π΅ β§ π β π΄) β ((π β§ π) = π β (π β§ π) β π΄)) |
| 8 | 7 | orim1d 964 | . 2 β’ ((πΎ β OL β§ π β π΅ β§ π β π΄) β (((π β§ π) = π β¨ (π β§ π) = 0 ) β ((π β§ π) β π΄ β¨ (π β§ π) = 0 ))) |
| 9 | 5, 8 | mpd 15 | 1 β’ ((πΎ β OL β§ π β π΅ β§ π β π΄) β ((π β§ π) β π΄ β¨ (π β§ π) = 0 )) |
| Colors of variables: wff setvar class |
| Syntax hints: β wi 4 β¨ wo 845 β§ w3a 1087 = wceq 1541 β wcel 2106 βcfv 6543 (class class class)co 7408 Basecbs 17143 meetcmee 18264 0.cp0 18375 OLcol 38039 Atomscatm 38128 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 |
| This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5574 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7364 df-ov 7411 df-oprab 7412 df-proset 18247 df-poset 18265 df-plt 18282 df-lub 18298 df-glb 18299 df-join 18300 df-meet 18301 df-p0 18377 df-lat 18384 df-oposet 38041 df-ol 38043 df-covers 38131 df-ats 38132 |
| This theorem is referenced by: 2at0mat0 38391 atmod1i1m 38724 |
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