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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 23901 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 23817 | . . . . . . . . . 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 24681 | . . . . . . . . . . 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 23159 | . . . . . . . . . 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 23474 | . . . . . . . . 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 8065 | . . . . . . . 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 23474 | . . . . . . . . 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 8065 | . . . . . . . 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 7580 | . . . 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 7490 | . 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 25068 | . . . 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 23901 | . 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 1570 ∈ wcel 2145 ∀wral 3076 × cxp 5653 ran crn 5656 ↾ cres 5657 ⟶wf 6529 ‘cfv 6533 (class class class)co 7413 ∈ cmpo 7415 (,)cioo 13398 Basecbs 17301 distcds 17351 TopOpenctopn 17506 topGenctg 17522 TopOnctopon 23135 TopSpctps 23157 Cn ccn 23449 ×t ctx 23786 MetSpcms 24544 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7736 ax-cnex 11180 ax-resscn 11181 ax-1cn 11182 ax-icn 11183 ax-addcl 11184 ax-addrcl 11185 ax-mulcl 11186 ax-mulrcl 11187 ax-mulcom 11188 ax-addass 11189 ax-mulass 11190 ax-distr 11191 ax-i2m1 11192 ax-1ne0 11193 ax-1rid 11194 ax-rnegex 11195 ax-rrecex 11196 ax-cnre 11197 ax-pre-lttri 11198 ax-pre-lttrn 11199 ax-pre-ltadd 11200 ax-pre-mulgt0 11201 ax-pre-sup 11202 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-iin 4954 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-se 5609 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-isom 6542 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-of 7678 df-om 7863 df-1st 7986 df-2nd 7987 df-supp 8159 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-1o 8455 df-2o 8456 df-er 8696 df-ec 8698 df-map 8828 df-ixp 8905 df-en 8953 df-dom 8954 df-sdom 8955 df-fin 8956 df-fsupp 9332 df-fi 9381 df-sup 9412 df-inf 9413 df-oi 9482 df-card 9944 df-pnf 11269 df-mnf 11270 df-xr 11271 df-ltxr 11272 df-le 11273 df-sub 11467 df-neg 11468 df-div 11896 df-nn 12258 df-2 12327 df-3 12328 df-4 12329 df-5 12330 df-6 12331 df-7 12332 df-8 12333 df-9 12334 df-n0 12529 df-z 12616 df-dec 12737 df-uz 12888 df-q 12998 df-rp 13043 df-xneg 13163 df-xadd 13164 df-xmul 13165 df-ioo 13402 df-ioc 13403 df-ico 13404 df-icc 13405 df-fz 13562 df-fzo 13710 df-seq 14066 df-exp 14126 df-hash 14395 df-cj 15186 df-re 15187 df-im 15188 df-sqrt 15322 df-abs 15323 df-struct 17239 df-sets 17256 df-slot 17274 df-ndx 17286 df-base 17302 df-ress 17323 df-plusg 17355 df-mulr 17356 df-sca 17358 df-vsca 17359 df-ip 17360 df-tset 17361 df-ple 17362 df-ds 17364 df-hom 17366 df-cco 17367 df-rest 17507 df-topn 17508 df-0g 17526 df-gsum 17527 df-topgen 17528 df-pt 17529 df-prds 17532 df-ordt 17587 df-xrs 17588 df-qtop 17593 df-imas 17594 df-xps 17596 df-mre 17670 df-mrc 17671 df-acs 17673 df-ps 18654 df-tsr 18655 df-mgm 18730 df-sgrp 18821 df-mnd 18837 df-submnd 18892 df-mulg 19191 df-cntz 19444 df-cmn 19909 df-psmet 21577 df-xmet 21578 df-met 21579 df-bl 21580 df-mopn 21581 df-top 23119 df-topon 23136 df-topsp 23158 df-bases 23171 df-cn 23452 df-cnp 23453 df-tx 23788 df-hmeo 23981 df-xms 24546 df-ms 24547 df-tms 24548 |
| This theorem is used by: (None) |
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