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Mirrors > Home > MPE Home > Th. List > mrelatglb | Structured version Visualization version GIF version |
Description: Greatest lower bounds in a Moore space are realized by intersections. (Contributed by Stefan O'Rear, 31-Jan-2015.) See mrelatglbALT 47998 for an alternate proof. |
Ref | Expression |
---|---|
mreclat.i | ⊢ 𝐼 = (toInc‘𝐶) |
mrelatglb.g | ⊢ 𝐺 = (glb‘𝐼) |
Ref | Expression |
---|---|
mrelatglb | ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → (𝐺‘𝑈) = ∩ 𝑈) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2728 | . 2 ⊢ (le‘𝐼) = (le‘𝐼) | |
2 | mreclat.i | . . . 4 ⊢ 𝐼 = (toInc‘𝐶) | |
3 | 2 | ipobas 18517 | . . 3 ⊢ (𝐶 ∈ (Moore‘𝑋) → 𝐶 = (Base‘𝐼)) |
4 | 3 | 3ad2ant1 1131 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝐶 = (Base‘𝐼)) |
5 | mrelatglb.g | . . 3 ⊢ 𝐺 = (glb‘𝐼) | |
6 | 5 | a1i 11 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝐺 = (glb‘𝐼)) |
7 | 2 | ipopos 18522 | . . 3 ⊢ 𝐼 ∈ Poset |
8 | 7 | a1i 11 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝐼 ∈ Poset) |
9 | simp2 1135 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝑈 ⊆ 𝐶) | |
10 | mreintcl 17569 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → ∩ 𝑈 ∈ 𝐶) | |
11 | intss1 4962 | . . . 4 ⊢ (𝑥 ∈ 𝑈 → ∩ 𝑈 ⊆ 𝑥) | |
12 | 11 | adantl 481 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈 ⊆ 𝑥) |
13 | simpl1 1189 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → 𝐶 ∈ (Moore‘𝑋)) | |
14 | 10 | adantr 480 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈 ∈ 𝐶) |
15 | 9 | sselda 3979 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
16 | 2, 1 | ipole 18520 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ ∩ 𝑈 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (∩ 𝑈(le‘𝐼)𝑥 ↔ ∩ 𝑈 ⊆ 𝑥)) |
17 | 13, 14, 15, 16 | syl3anc 1369 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → (∩ 𝑈(le‘𝐼)𝑥 ↔ ∩ 𝑈 ⊆ 𝑥)) |
18 | 12, 17 | mpbird 257 | . 2 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈(le‘𝐼)𝑥) |
19 | simpll1 1210 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝐶 ∈ (Moore‘𝑋)) | |
20 | simplr 768 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝑦 ∈ 𝐶) | |
21 | simpl2 1190 | . . . . . . . . 9 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → 𝑈 ⊆ 𝐶) | |
22 | 21 | sselda 3979 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
23 | 2, 1 | ipole 18520 | . . . . . . . 8 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (𝑦(le‘𝐼)𝑥 ↔ 𝑦 ⊆ 𝑥)) |
24 | 19, 20, 22, 23 | syl3anc 1369 | . . . . . . 7 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → (𝑦(le‘𝐼)𝑥 ↔ 𝑦 ⊆ 𝑥)) |
25 | 24 | biimpd 228 | . . . . . 6 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → (𝑦(le‘𝐼)𝑥 → 𝑦 ⊆ 𝑥)) |
26 | 25 | ralimdva 3163 | . . . . 5 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → (∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥 → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥)) |
27 | 26 | 3impia 1115 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥) |
28 | ssint 4963 | . . . 4 ⊢ (𝑦 ⊆ ∩ 𝑈 ↔ ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥) | |
29 | 27, 28 | sylibr 233 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦 ⊆ ∩ 𝑈) |
30 | simp11 1201 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝐶 ∈ (Moore‘𝑋)) | |
31 | simp2 1135 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦 ∈ 𝐶) | |
32 | 10 | 3ad2ant1 1131 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∩ 𝑈 ∈ 𝐶) |
33 | 2, 1 | ipole 18520 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ ∩ 𝑈 ∈ 𝐶) → (𝑦(le‘𝐼)∩ 𝑈 ↔ 𝑦 ⊆ ∩ 𝑈)) |
34 | 30, 31, 32, 33 | syl3anc 1369 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → (𝑦(le‘𝐼)∩ 𝑈 ↔ 𝑦 ⊆ ∩ 𝑈)) |
35 | 29, 34 | mpbird 257 | . 2 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦(le‘𝐼)∩ 𝑈) |
36 | 1, 4, 6, 8, 9, 10, 18, 35 | posglbdg 18401 | 1 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → (𝐺‘𝑈) = ∩ 𝑈) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1085 = wceq 1534 ∈ wcel 2099 ≠ wne 2936 ∀wral 3057 ⊆ wss 3945 ∅c0 4319 ∩ cint 4945 class class class wbr 5143 ‘cfv 6543 Basecbs 17174 lecple 17234 Moorecmre 17556 Posetcpo 18293 glbcglb 18296 toInccipo 18513 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5280 ax-sep 5294 ax-nul 5301 ax-pow 5360 ax-pr 5424 ax-un 7735 ax-cnex 11189 ax-resscn 11190 ax-1cn 11191 ax-icn 11192 ax-addcl 11193 ax-addrcl 11194 ax-mulcl 11195 ax-mulrcl 11196 ax-mulcom 11197 ax-addass 11198 ax-mulass 11199 ax-distr 11200 ax-i2m1 11201 ax-1ne0 11202 ax-1rid 11203 ax-rnegex 11204 ax-rrecex 11205 ax-cnre 11206 ax-pre-lttri 11207 ax-pre-lttrn 11208 ax-pre-ltadd 11209 ax-pre-mulgt0 11210 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3472 df-sbc 3776 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3964 df-nul 4320 df-if 4526 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4905 df-int 4946 df-iun 4994 df-br 5144 df-opab 5206 df-mpt 5227 df-tr 5261 df-id 5571 df-eprel 5577 df-po 5585 df-so 5586 df-fr 5628 df-we 5630 df-xp 5679 df-rel 5680 df-cnv 5681 df-co 5682 df-dm 5683 df-rn 5684 df-res 5685 df-ima 5686 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 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 7371 df-ov 7418 df-oprab 7419 df-mpo 7420 df-om 7866 df-1st 7988 df-2nd 7989 df-frecs 8281 df-wrecs 8312 df-recs 8386 df-rdg 8425 df-1o 8481 df-er 8719 df-en 8959 df-dom 8960 df-sdom 8961 df-fin 8962 df-pnf 11275 df-mnf 11276 df-xr 11277 df-ltxr 11278 df-le 11279 df-sub 11471 df-neg 11472 df-nn 12238 df-2 12300 df-3 12301 df-4 12302 df-5 12303 df-6 12304 df-7 12305 df-8 12306 df-9 12307 df-n0 12498 df-z 12584 df-dec 12703 df-uz 12848 df-fz 13512 df-struct 17110 df-sets 17127 df-slot 17145 df-ndx 17157 df-base 17175 df-tset 17246 df-ple 17247 df-ocomp 17248 df-mre 17560 df-odu 18273 df-proset 18281 df-poset 18299 df-lub 18332 df-glb 18333 df-ipo 18514 |
This theorem is referenced by: mreclatBAD 18549 |
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