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| Mirrors > Home > MPE Home > Th. List > cnmpt2ds | Structured version Visualization version GIF version | ||
| Description: Continuity of the metric function; analogue of cnmpt22f 24003 which cannot be used directly because 𝐷 is not necessarily a function. (Contributed by Mario Carneiro, 5-Oct-2015.) |
| Ref | Expression |
|---|---|
| cnmpt1ds.d | ⊢ 𝐷 = (dist‘𝐺) |
| cnmpt1ds.j | ⊢ 𝐽 = (TopOpen‘𝐺) |
| cnmpt1ds.r | ⊢ 𝑅 = (topGen‘ran (,)) |
| cnmpt1ds.g | ⊢ (𝜑 → 𝐺 ∈ MetSp) |
| cnmpt1ds.k | ⊢ (𝜑 → 𝐾 ∈ (TopOn‘𝑋)) |
| cnmpt2ds.l | ⊢ (𝜑 → 𝐿 ∈ (TopOn‘𝑌)) |
| cnmpt2ds.a | ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴) ∈ ((𝐾 ×t 𝐿) Cn 𝐽)) |
| cnmpt2ds.b | ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) ∈ ((𝐾 ×t 𝐿) Cn 𝐽)) |
| Ref | Expression |
|---|---|
| cnmpt2ds | ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ (𝐴𝐷𝐵)) ∈ ((𝐾 ×t 𝐿) Cn 𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnmpt1ds.k | . . . . . . . . . 10 ⊢ (𝜑 → 𝐾 ∈ (TopOn‘𝑋)) | |
| 2 | cnmpt2ds.l | . . . . . . . . . 10 ⊢ (𝜑 → 𝐿 ∈ (TopOn‘𝑌)) | |
| 3 | txtopon 23919 | . . . . . . . . . 10 ⊢ ((𝐾 ∈ (TopOn‘𝑋) ∧ 𝐿 ∈ (TopOn‘𝑌)) → (𝐾 ×t 𝐿) ∈ (TopOn‘(𝑋 × 𝑌))) | |
| 4 | 1, 2, 3 | syl2anc 596 | . . . . . . . . 9 ⊢ (𝜑 → (𝐾 ×t 𝐿) ∈ (TopOn‘(𝑋 × 𝑌))) |
| 5 | cnmpt1ds.g | . . . . . . . . . . 11 ⊢ (𝜑 → 𝐺 ∈ MetSp) | |
| 6 | mstps 24783 | . . . . . . . . . . 11 ⊢ (𝐺 ∈ MetSp → 𝐺 ∈ TopSp) | |
| 7 | 5, 6 | syl 18 | . . . . . . . . . 10 ⊢ (𝜑 → 𝐺 ∈ TopSp) |
| 8 | eqid 2760 | . . . . . . . . . . 11 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 9 | cnmpt1ds.j | . . . . . . . . . . 11 ⊢ 𝐽 = (TopOpen‘𝐺) | |
| 10 | 8, 9 | istps 23261 | . . . . . . . . . 10 ⊢ (𝐺 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘(Base‘𝐺))) |
| 11 | 7, 10 | sylib 221 | . . . . . . . . 9 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘(Base‘𝐺))) |
| 12 | cnmpt2ds.a | . . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴) ∈ ((𝐾 ×t 𝐿) Cn 𝐽)) | |
| 13 | cnf2 23576 | . . . . . . . . 9 ⊢ (((𝐾 ×t 𝐿) ∈ (TopOn‘(𝑋 × 𝑌)) ∧ 𝐽 ∈ (TopOn‘(Base‘𝐺)) ∧ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴) ∈ ((𝐾 ×t 𝐿) Cn 𝐽)) → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴):(𝑋 × 𝑌)⟶(Base‘𝐺)) | |
| 14 | 4, 11, 12, 13 | syl3anc 1398 | . . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴):(𝑋 × 𝑌)⟶(Base‘𝐺)) |
| 15 | eqid 2760 | . . . . . . . . 9 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴) = (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴) | |
| 16 | 15 | fmpo 8084 | . . . . . . . 8 ⊢ (∀𝑥 ∈ 𝑋 ∀𝑦 ∈ 𝑌 𝐴 ∈ (Base‘𝐺) ↔ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐴):(𝑋 × 𝑌)⟶(Base‘𝐺)) |
| 17 | 14, 16 | sylibr 237 | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ 𝑌 𝐴 ∈ (Base‘𝐺)) |
| 18 | 17 | r19.21bi 3254 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ∀𝑦 ∈ 𝑌 𝐴 ∈ (Base‘𝐺)) |
| 19 | 18 | r19.21bi 3254 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑋) ∧ 𝑦 ∈ 𝑌) → 𝐴 ∈ (Base‘𝐺)) |
| 20 | cnmpt2ds.b | . . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) ∈ ((𝐾 ×t 𝐿) Cn 𝐽)) | |
| 21 | cnf2 23576 | . . . . . . . . 9 ⊢ (((𝐾 ×t 𝐿) ∈ (TopOn‘(𝑋 × 𝑌)) ∧ 𝐽 ∈ (TopOn‘(Base‘𝐺)) ∧ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) ∈ ((𝐾 ×t 𝐿) Cn 𝐽)) → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵):(𝑋 × 𝑌)⟶(Base‘𝐺)) | |
| 22 | 4, 11, 20, 21 | syl3anc 1398 | . . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵):(𝑋 × 𝑌)⟶(Base‘𝐺)) |
| 23 | eqid 2760 | . . . . . . . . 9 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) = (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) | |
| 24 | 23 | fmpo 8084 | . . . . . . . 8 ⊢ (∀𝑥 ∈ 𝑋 ∀𝑦 ∈ 𝑌 𝐵 ∈ (Base‘𝐺) ↔ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵):(𝑋 × 𝑌)⟶(Base‘𝐺)) |
| 25 | 22, 24 | sylibr 237 | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ 𝑌 𝐵 ∈ (Base‘𝐺)) |
| 26 | 25 | r19.21bi 3254 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ∀𝑦 ∈ 𝑌 𝐵 ∈ (Base‘𝐺)) |
| 27 | 26 | r19.21bi 3254 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑋) ∧ 𝑦 ∈ 𝑌) → 𝐵 ∈ (Base‘𝐺)) |
| 28 | 19, 27 | ovresd 7591 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑋) ∧ 𝑦 ∈ 𝑌) → (𝐴(𝐷 ↾ ((Base‘𝐺) × (Base‘𝐺)))𝐵) = (𝐴𝐷𝐵)) |
| 29 | 28 | 3impa 1127 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋 ∧ 𝑦 ∈ 𝑌) → (𝐴(𝐷 ↾ ((Base‘𝐺) × (Base‘𝐺)))𝐵) = (𝐴𝐷𝐵)) |
| 30 | 29 | mpoeq3dva 7501 | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ (𝐴(𝐷 ↾ ((Base‘𝐺) × (Base‘𝐺)))𝐵)) = (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ (𝐴𝐷𝐵))) |
| 31 | cnmpt1ds.d | . . . . 5 ⊢ 𝐷 = (dist‘𝐺) | |
| 32 | cnmpt1ds.r | . . . . 5 ⊢ 𝑅 = (topGen‘ran (,)) | |
| 33 | 8, 31, 9, 32 | msdcn 25170 | . . . 4 ⊢ (𝐺 ∈ MetSp → (𝐷 ↾ ((Base‘𝐺) × (Base‘𝐺))) ∈ ((𝐽 ×t 𝐽) Cn 𝑅)) |
| 34 | 5, 33 | syl 18 | . . 3 ⊢ (𝜑 → (𝐷 ↾ ((Base‘𝐺) × (Base‘𝐺))) ∈ ((𝐽 ×t 𝐽) Cn 𝑅)) |
| 35 | 1, 2, 12, 20, 34 | cnmpt22f 24003 | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ (𝐴(𝐷 ↾ ((Base‘𝐺) × (Base‘𝐺)))𝐵)) ∈ ((𝐾 ×t 𝐿) Cn 𝑅)) |
| 36 | 30, 35 | eqeltrrd 2861 | 1 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ (𝐴𝐷𝐵)) ∈ ((𝐾 ×t 𝐿) Cn 𝑅)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ∀wral 3076 × cxp 5649 ran crn 5652 ↾ cres 5653 ⟶wf 6539 ‘cfv 6543 (class class class)co 7424 ∈ cmpo 7426 (,)cioo 13483 Basecbs 17396 distcds 17446 TopOpenctopn 17601 topGenctg 17617 TopOnctopon 23237 TopSpctps 23259 Cn ccn 23551 ×t ctx 23888 MetSpcms 24646 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 ax-cnex 11263 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-addrcl 11268 ax-mulcl 11269 ax-mulrcl 11270 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-i2m1 11275 ax-1ne0 11276 ax-1rid 11277 ax-rnegex 11278 ax-rrecex 11279 ax-cnre 11280 ax-pre-lttri 11281 ax-pre-lttrn 11282 ax-pre-ltadd 11283 ax-pre-mulgt0 11284 ax-pre-sup 11285 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-iin 4953 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-se 5605 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-of 7697 df-om 7882 df-1st 8005 df-2nd 8006 df-supp 8185 df-frecs 8307 df-wrecs 8338 df-recs 8387 df-rdg 8426 df-1o 8484 df-2o 8485 df-er 8725 df-ec 8727 df-map 8857 df-ixp 8934 df-en 8982 df-dom 8983 df-sdom 8984 df-fin 8985 df-fsupp 9362 df-fi 9410 df-sup 9441 df-inf 9442 df-oi 9511 df-card 10027 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-sub 11550 df-neg 11551 df-div 11981 df-nn 12343 df-2 12412 df-3 12413 df-4 12414 df-5 12415 df-6 12416 df-7 12417 df-8 12418 df-9 12419 df-n0 12614 df-z 12701 df-dec 12822 df-uz 12973 df-q 13083 df-rp 13128 df-xneg 13248 df-xadd 13249 df-xmul 13250 df-ioo 13487 df-ioc 13488 df-ico 13489 df-icc 13490 df-fz 13647 df-fzo 13796 df-seq 14152 df-exp 14212 df-hash 14482 df-cj 15275 df-re 15276 df-im 15277 df-sqrt 15411 df-abs 15412 df-struct 17334 df-sets 17351 df-slot 17369 df-ndx 17381 df-base 17397 df-ress 17418 df-plusg 17450 df-mulr 17451 df-sca 17453 df-vsca 17454 df-ip 17455 df-tset 17456 df-ple 17457 df-ds 17459 df-hom 17461 df-cco 17462 df-rest 17602 df-topn 17603 df-0g 17621 df-gsum 17622 df-topgen 17623 df-pt 17624 df-prds 17627 df-ordt 17682 df-xrs 17683 df-qtop 17688 df-imas 17689 df-xps 17691 df-mre 17765 df-mrc 17766 df-acs 17768 df-ps 18749 df-tsr 18750 df-mgm 18825 df-sgrp 18917 df-mnd 18933 df-submnd 18988 df-mulg 19287 df-cntz 19540 df-cmn 20005 df-psmet 21679 df-xmet 21680 df-met 21681 df-bl 21682 df-mopn 21683 df-top 23221 df-topon 23238 df-topsp 23260 df-bases 23273 df-cn 23554 df-cnp 23555 df-tx 23890 df-hmeo 24083 df-xms 24648 df-ms 24649 df-tms 24650 |
| This theorem is used by: (None) |
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