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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 49486 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 2737 | . 2 ⊢ (le‘𝐼) = (le‘𝐼) | |
| 2 | mreclat.i | . . . 4 ⊢ 𝐼 = (toInc‘𝐶) | |
| 3 | 2 | ipobas 18491 | . . 3 ⊢ (𝐶 ∈ (Moore‘𝑋) → 𝐶 = (Base‘𝐼)) |
| 4 | 3 | 3ad2ant1 1134 | . 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 18496 | . . 3 ⊢ 𝐼 ∈ Poset |
| 8 | 7 | a1i 11 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝐼 ∈ Poset) |
| 9 | simp2 1138 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝑈 ⊆ 𝐶) | |
| 10 | mreintcl 17551 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → ∩ 𝑈 ∈ 𝐶) | |
| 11 | intss1 4906 | . . . 4 ⊢ (𝑥 ∈ 𝑈 → ∩ 𝑈 ⊆ 𝑥) | |
| 12 | 11 | adantl 481 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈 ⊆ 𝑥) |
| 13 | simpl1 1193 | . . . 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 3922 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
| 16 | 2, 1 | ipole 18494 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ ∩ 𝑈 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (∩ 𝑈(le‘𝐼)𝑥 ↔ ∩ 𝑈 ⊆ 𝑥)) |
| 17 | 13, 14, 15, 16 | syl3anc 1374 | . . 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 1214 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝐶 ∈ (Moore‘𝑋)) | |
| 20 | simplr 769 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝑦 ∈ 𝐶) | |
| 21 | simpl2 1194 | . . . . . . . . 9 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → 𝑈 ⊆ 𝐶) | |
| 22 | 21 | sselda 3922 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
| 23 | 2, 1 | ipole 18494 | . . . . . . . 8 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (𝑦(le‘𝐼)𝑥 ↔ 𝑦 ⊆ 𝑥)) |
| 24 | 19, 20, 22, 23 | syl3anc 1374 | . . . . . . 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 3150 | . . . . 5 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → (∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥 → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥)) |
| 27 | 26 | 3impia 1118 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥) |
| 28 | ssint 4907 | . . . 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 1205 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝐶 ∈ (Moore‘𝑋)) | |
| 31 | simp2 1138 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦 ∈ 𝐶) | |
| 32 | 10 | 3ad2ant1 1134 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∩ 𝑈 ∈ 𝐶) |
| 33 | 2, 1 | ipole 18494 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ ∩ 𝑈 ∈ 𝐶) → (𝑦(le‘𝐼)∩ 𝑈 ↔ 𝑦 ⊆ ∩ 𝑈)) |
| 34 | 30, 31, 32, 33 | syl3anc 1374 | . . 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 18373 | 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 1542 ∈ wcel 2114 ≠ wne 2933 ∀wral 3052 ⊆ wss 3890 ∅c0 4274 ∩ cint 4890 class class class wbr 5086 ‘cfv 6493 Basecbs 17173 lecple 17221 Moorecmre 17538 Posetcpo 18267 glbcglb 18270 toInccipo 18487 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-1st 7936 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-nn 12169 df-2 12238 df-3 12239 df-4 12240 df-5 12241 df-6 12242 df-7 12243 df-8 12244 df-9 12245 df-n0 12432 df-z 12519 df-dec 12639 df-uz 12783 df-fz 13456 df-struct 17111 df-sets 17128 df-slot 17146 df-ndx 17158 df-base 17174 df-tset 17233 df-ple 17234 df-ocomp 17235 df-mre 17542 df-odu 18247 df-proset 18254 df-poset 18273 df-lub 18304 df-glb 18305 df-ipo 18488 |
| This theorem is referenced by: mreclatBAD 18523 |
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