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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 48668 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 2740 | . 2 ⊢ (le‘𝐼) = (le‘𝐼) | |
2 | mreclat.i | . . . 4 ⊢ 𝐼 = (toInc‘𝐶) | |
3 | 2 | ipobas 18601 | . . 3 ⊢ (𝐶 ∈ (Moore‘𝑋) → 𝐶 = (Base‘𝐼)) |
4 | 3 | 3ad2ant1 1133 | . 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 18606 | . . 3 ⊢ 𝐼 ∈ Poset |
8 | 7 | a1i 11 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝐼 ∈ Poset) |
9 | simp2 1137 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝑈 ⊆ 𝐶) | |
10 | mreintcl 17653 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → ∩ 𝑈 ∈ 𝐶) | |
11 | intss1 4987 | . . . 4 ⊢ (𝑥 ∈ 𝑈 → ∩ 𝑈 ⊆ 𝑥) | |
12 | 11 | adantl 481 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈 ⊆ 𝑥) |
13 | simpl1 1191 | . . . 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 4008 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
16 | 2, 1 | ipole 18604 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ ∩ 𝑈 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (∩ 𝑈(le‘𝐼)𝑥 ↔ ∩ 𝑈 ⊆ 𝑥)) |
17 | 13, 14, 15, 16 | syl3anc 1371 | . . 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 1212 | . . . . . . . 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 1192 | . . . . . . . . 9 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → 𝑈 ⊆ 𝐶) | |
22 | 21 | sselda 4008 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
23 | 2, 1 | ipole 18604 | . . . . . . . 8 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (𝑦(le‘𝐼)𝑥 ↔ 𝑦 ⊆ 𝑥)) |
24 | 19, 20, 22, 23 | syl3anc 1371 | . . . . . . 7 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → (𝑦(le‘𝐼)𝑥 ↔ 𝑦 ⊆ 𝑥)) |
25 | 24 | biimpd 229 | . . . . . 6 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → (𝑦(le‘𝐼)𝑥 → 𝑦 ⊆ 𝑥)) |
26 | 25 | ralimdva 3173 | . . . . 5 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → (∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥 → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥)) |
27 | 26 | 3impia 1117 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥) |
28 | ssint 4988 | . . . 4 ⊢ (𝑦 ⊆ ∩ 𝑈 ↔ ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥) | |
29 | 27, 28 | sylibr 234 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦 ⊆ ∩ 𝑈) |
30 | simp11 1203 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝐶 ∈ (Moore‘𝑋)) | |
31 | simp2 1137 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦 ∈ 𝐶) | |
32 | 10 | 3ad2ant1 1133 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∩ 𝑈 ∈ 𝐶) |
33 | 2, 1 | ipole 18604 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ ∩ 𝑈 ∈ 𝐶) → (𝑦(le‘𝐼)∩ 𝑈 ↔ 𝑦 ⊆ ∩ 𝑈)) |
34 | 30, 31, 32, 33 | syl3anc 1371 | . . 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 18485 | 1 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → (𝐺‘𝑈) = ∩ 𝑈) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1537 ∈ wcel 2108 ≠ wne 2946 ∀wral 3067 ⊆ wss 3976 ∅c0 4352 ∩ cint 4970 class class class wbr 5166 ‘cfv 6573 Basecbs 17258 lecple 17318 Moorecmre 17640 Posetcpo 18377 glbcglb 18380 toInccipo 18597 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-rep 5303 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-cnex 11240 ax-resscn 11241 ax-1cn 11242 ax-icn 11243 ax-addcl 11244 ax-addrcl 11245 ax-mulcl 11246 ax-mulrcl 11247 ax-mulcom 11248 ax-addass 11249 ax-mulass 11250 ax-distr 11251 ax-i2m1 11252 ax-1ne0 11253 ax-1rid 11254 ax-rnegex 11255 ax-rrecex 11256 ax-cnre 11257 ax-pre-lttri 11258 ax-pre-lttrn 11259 ax-pre-ltadd 11260 ax-pre-mulgt0 11261 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-rmo 3388 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-pss 3996 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-int 4971 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-tr 5284 df-id 5593 df-eprel 5599 df-po 5607 df-so 5608 df-fr 5652 df-we 5654 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-pred 6332 df-ord 6398 df-on 6399 df-lim 6400 df-suc 6401 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-om 7904 df-1st 8030 df-2nd 8031 df-frecs 8322 df-wrecs 8353 df-recs 8427 df-rdg 8466 df-1o 8522 df-er 8763 df-en 9004 df-dom 9005 df-sdom 9006 df-fin 9007 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11522 df-neg 11523 df-nn 12294 df-2 12356 df-3 12357 df-4 12358 df-5 12359 df-6 12360 df-7 12361 df-8 12362 df-9 12363 df-n0 12554 df-z 12640 df-dec 12759 df-uz 12904 df-fz 13568 df-struct 17194 df-sets 17211 df-slot 17229 df-ndx 17241 df-base 17259 df-tset 17330 df-ple 17331 df-ocomp 17332 df-mre 17644 df-odu 18357 df-proset 18365 df-poset 18383 df-lub 18416 df-glb 18417 df-ipo 18598 |
This theorem is referenced by: mreclatBAD 18633 |
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