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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 49802 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 2762 | . 2 ⊢ (le‘𝐼) = (le‘𝐼) | |
| 2 | mreclat.i | . . . 4 ⊢ 𝐼 = (toInc‘𝐶) | |
| 3 | 2 | ipobas 18593 | . . 3 ⊢ (𝐶 ∈ (Moore‘𝑋) → 𝐶 = (Base‘𝐼)) |
| 4 | 3 | 3ad2ant1 1150 | . 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 18598 | . . 3 ⊢ 𝐼 ∈ Poset |
| 8 | 7 | a1i 11 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝐼 ∈ Poset) |
| 9 | simp2 1154 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → 𝑈 ⊆ 𝐶) | |
| 10 | mreintcl 17653 | . 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → ∩ 𝑈 ∈ 𝐶) | |
| 11 | intss1 4927 | . . . 4 ⊢ (𝑥 ∈ 𝑈 → ∩ 𝑈 ⊆ 𝑥) | |
| 12 | 11 | adantl 486 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈 ⊆ 𝑥) |
| 13 | simpl1 1209 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → 𝐶 ∈ (Moore‘𝑋)) | |
| 14 | 10 | adantr 485 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈 ∈ 𝐶) |
| 15 | 9 | sselda 3936 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
| 16 | 2, 1 | ipole 18596 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ ∩ 𝑈 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (∩ 𝑈(le‘𝐼)𝑥 ↔ ∩ 𝑈 ⊆ 𝑥)) |
| 17 | 13, 14, 15, 16 | syl3anc 1397 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → (∩ 𝑈(le‘𝐼)𝑥 ↔ ∩ 𝑈 ⊆ 𝑥)) |
| 18 | 12, 17 | mpbird 260 | . 2 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∩ 𝑈(le‘𝐼)𝑥) |
| 19 | simpll1 1230 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝐶 ∈ (Moore‘𝑋)) | |
| 20 | simplr 780 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝑦 ∈ 𝐶) | |
| 21 | simpl2 1210 | . . . . . . . . 9 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → 𝑈 ⊆ 𝐶) | |
| 22 | 21 | sselda 3936 | . . . . . . . 8 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝐶) |
| 23 | 2, 1 | ipole 18596 | . . . . . . . 8 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ 𝑥 ∈ 𝐶) → (𝑦(le‘𝐼)𝑥 ↔ 𝑦 ⊆ 𝑥)) |
| 24 | 19, 20, 22, 23 | syl3anc 1397 | . . . . . . 7 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → (𝑦(le‘𝐼)𝑥 ↔ 𝑦 ⊆ 𝑥)) |
| 25 | 24 | biimpd 232 | . . . . . 6 ⊢ ((((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) ∧ 𝑥 ∈ 𝑈) → (𝑦(le‘𝐼)𝑥 → 𝑦 ⊆ 𝑥)) |
| 26 | 25 | ralimdva 3176 | . . . . 5 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶) → (∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥 → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥)) |
| 27 | 26 | 3impia 1134 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥) |
| 28 | ssint 4928 | . . . 4 ⊢ (𝑦 ⊆ ∩ 𝑈 ↔ ∀𝑥 ∈ 𝑈 𝑦 ⊆ 𝑥) | |
| 29 | 27, 28 | sylibr 237 | . . 3 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦 ⊆ ∩ 𝑈) |
| 30 | simp11 1221 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝐶 ∈ (Moore‘𝑋)) | |
| 31 | simp2 1154 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → 𝑦 ∈ 𝐶) | |
| 32 | 10 | 3ad2ant1 1150 | . . . 4 ⊢ (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) ∧ 𝑦 ∈ 𝐶 ∧ ∀𝑥 ∈ 𝑈 𝑦(le‘𝐼)𝑥) → ∩ 𝑈 ∈ 𝐶) |
| 33 | 2, 1 | ipole 18596 | . . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑦 ∈ 𝐶 ∧ ∩ 𝑈 ∈ 𝐶) → (𝑦(le‘𝐼)∩ 𝑈 ↔ 𝑦 ⊆ ∩ 𝑈)) |
| 34 | 30, 31, 32, 33 | syl3anc 1397 | . . 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 260 | . 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 18475 | 1 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝐶 ∧ 𝑈 ≠ ∅) → (𝐺‘𝑈) = ∩ 𝑈) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1102 = wceq 1569 ∈ wcel 2142 ≠ wne 2957 ∀wral 3078 ⊆ wss 3904 ∅c0 4285 ∩ cint 4911 class class class wbr 5108 ‘cfv 6536 Basecbs 17275 lecple 17323 Moorecmre 17640 Posetcpo 18369 glbcglb 18372 toInccipo 18589 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-int 4912 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-2 12309 df-3 12310 df-4 12311 df-5 12312 df-6 12313 df-7 12314 df-8 12315 df-9 12316 df-n0 12511 df-z 12598 df-dec 12718 df-uz 12869 df-fz 13542 df-struct 17213 df-sets 17230 df-slot 17248 df-ndx 17260 df-base 17276 df-tset 17335 df-ple 17336 df-ocomp 17337 df-mre 17644 df-odu 18349 df-proset 18356 df-poset 18375 df-lub 18406 df-glb 18407 df-ipo 18590 |
| This theorem is used by: mreclatBAD 18625 |
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