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| Mirrors > Home > MPE Home > Th. List > tmsxpsmopn | Structured version Visualization version GIF version | ||
| Description: Express the product of two metrics as another metric. (Contributed by Mario Carneiro, 2-Sep-2015.) |
| Ref | Expression |
|---|---|
| tmsxps.p | ⊢ 𝑃 = (dist‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) |
| tmsxps.1 | ⊢ (𝜑 → 𝑀 ∈ (∞Met‘𝑋)) |
| tmsxps.2 | ⊢ (𝜑 → 𝑁 ∈ (∞Met‘𝑌)) |
| tmsxpsmopn.j | ⊢ 𝐽 = (MetOpen‘𝑀) |
| tmsxpsmopn.k | ⊢ 𝐾 = (MetOpen‘𝑁) |
| tmsxpsmopn.l | ⊢ 𝐿 = (MetOpen‘𝑃) |
| Ref | Expression |
|---|---|
| tmsxpsmopn | ⊢ (𝜑 → 𝐿 = (𝐽 ×t 𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tmsxps.1 | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ (∞Met‘𝑋)) | |
| 2 | eqid 2731 | . . . . . 6 ⊢ (toMetSp‘𝑀) = (toMetSp‘𝑀) | |
| 3 | 2 | tmsxms 24402 | . . . . 5 ⊢ (𝑀 ∈ (∞Met‘𝑋) → (toMetSp‘𝑀) ∈ ∞MetSp) |
| 4 | 1, 3 | syl 17 | . . . 4 ⊢ (𝜑 → (toMetSp‘𝑀) ∈ ∞MetSp) |
| 5 | xmstps 24369 | . . . 4 ⊢ ((toMetSp‘𝑀) ∈ ∞MetSp → (toMetSp‘𝑀) ∈ TopSp) | |
| 6 | 4, 5 | syl 17 | . . 3 ⊢ (𝜑 → (toMetSp‘𝑀) ∈ TopSp) |
| 7 | tmsxps.2 | . . . . 5 ⊢ (𝜑 → 𝑁 ∈ (∞Met‘𝑌)) | |
| 8 | eqid 2731 | . . . . . 6 ⊢ (toMetSp‘𝑁) = (toMetSp‘𝑁) | |
| 9 | 8 | tmsxms 24402 | . . . . 5 ⊢ (𝑁 ∈ (∞Met‘𝑌) → (toMetSp‘𝑁) ∈ ∞MetSp) |
| 10 | 7, 9 | syl 17 | . . . 4 ⊢ (𝜑 → (toMetSp‘𝑁) ∈ ∞MetSp) |
| 11 | xmstps 24369 | . . . 4 ⊢ ((toMetSp‘𝑁) ∈ ∞MetSp → (toMetSp‘𝑁) ∈ TopSp) | |
| 12 | 10, 11 | syl 17 | . . 3 ⊢ (𝜑 → (toMetSp‘𝑁) ∈ TopSp) |
| 13 | eqid 2731 | . . . 4 ⊢ ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) = ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) | |
| 14 | eqid 2731 | . . . 4 ⊢ (TopOpen‘(toMetSp‘𝑀)) = (TopOpen‘(toMetSp‘𝑀)) | |
| 15 | eqid 2731 | . . . 4 ⊢ (TopOpen‘(toMetSp‘𝑁)) = (TopOpen‘(toMetSp‘𝑁)) | |
| 16 | eqid 2731 | . . . 4 ⊢ (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) = (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) | |
| 17 | 13, 14, 15, 16 | xpstopn 23728 | . . 3 ⊢ (((toMetSp‘𝑀) ∈ TopSp ∧ (toMetSp‘𝑁) ∈ TopSp) → (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) = ((TopOpen‘(toMetSp‘𝑀)) ×t (TopOpen‘(toMetSp‘𝑁)))) |
| 18 | 6, 12, 17 | syl2anc 584 | . 2 ⊢ (𝜑 → (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) = ((TopOpen‘(toMetSp‘𝑀)) ×t (TopOpen‘(toMetSp‘𝑁)))) |
| 19 | tmsxpsmopn.l | . . 3 ⊢ 𝐿 = (MetOpen‘𝑃) | |
| 20 | 13 | xpsxms 24450 | . . . . . 6 ⊢ (((toMetSp‘𝑀) ∈ ∞MetSp ∧ (toMetSp‘𝑁) ∈ ∞MetSp) → ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) ∈ ∞MetSp) |
| 21 | 4, 10, 20 | syl2anc 584 | . . . . 5 ⊢ (𝜑 → ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) ∈ ∞MetSp) |
| 22 | eqid 2731 | . . . . . 6 ⊢ (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) = (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) | |
| 23 | tmsxps.p | . . . . . . 7 ⊢ 𝑃 = (dist‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) | |
| 24 | 23 | reseq1i 5924 | . . . . . 6 ⊢ (𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) = ((dist‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) |
| 25 | 16, 22, 24 | xmstopn 24367 | . . . . 5 ⊢ (((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) ∈ ∞MetSp → (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) = (MetOpen‘(𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))))) |
| 26 | 21, 25 | syl 17 | . . . 4 ⊢ (𝜑 → (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) = (MetOpen‘(𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))))) |
| 27 | eqid 2731 | . . . . . . 7 ⊢ (Base‘(toMetSp‘𝑀)) = (Base‘(toMetSp‘𝑀)) | |
| 28 | eqid 2731 | . . . . . . 7 ⊢ (Base‘(toMetSp‘𝑁)) = (Base‘(toMetSp‘𝑁)) | |
| 29 | 13, 27, 28, 4, 10, 23 | xpsdsfn2 24294 | . . . . . 6 ⊢ (𝜑 → 𝑃 Fn ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) |
| 30 | fnresdm 6600 | . . . . . 6 ⊢ (𝑃 Fn ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁)))) → (𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) = 𝑃) | |
| 31 | 29, 30 | syl 17 | . . . . 5 ⊢ (𝜑 → (𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) = 𝑃) |
| 32 | 31 | fveq2d 6826 | . . . 4 ⊢ (𝜑 → (MetOpen‘(𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁)))))) = (MetOpen‘𝑃)) |
| 33 | 26, 32 | eqtr2d 2767 | . . 3 ⊢ (𝜑 → (MetOpen‘𝑃) = (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁)))) |
| 34 | 19, 33 | eqtrid 2778 | . 2 ⊢ (𝜑 → 𝐿 = (TopOpen‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁)))) |
| 35 | tmsxpsmopn.j | . . . . 5 ⊢ 𝐽 = (MetOpen‘𝑀) | |
| 36 | 2, 35 | tmstopn 24401 | . . . 4 ⊢ (𝑀 ∈ (∞Met‘𝑋) → 𝐽 = (TopOpen‘(toMetSp‘𝑀))) |
| 37 | 1, 36 | syl 17 | . . 3 ⊢ (𝜑 → 𝐽 = (TopOpen‘(toMetSp‘𝑀))) |
| 38 | tmsxpsmopn.k | . . . . 5 ⊢ 𝐾 = (MetOpen‘𝑁) | |
| 39 | 8, 38 | tmstopn 24401 | . . . 4 ⊢ (𝑁 ∈ (∞Met‘𝑌) → 𝐾 = (TopOpen‘(toMetSp‘𝑁))) |
| 40 | 7, 39 | syl 17 | . . 3 ⊢ (𝜑 → 𝐾 = (TopOpen‘(toMetSp‘𝑁))) |
| 41 | 37, 40 | oveq12d 7364 | . 2 ⊢ (𝜑 → (𝐽 ×t 𝐾) = ((TopOpen‘(toMetSp‘𝑀)) ×t (TopOpen‘(toMetSp‘𝑁)))) |
| 42 | 18, 34, 41 | 3eqtr4d 2776 | 1 ⊢ (𝜑 → 𝐿 = (𝐽 ×t 𝐾)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2111 × cxp 5614 ↾ cres 5618 Fn wfn 6476 ‘cfv 6481 (class class class)co 7346 Basecbs 17120 distcds 17170 TopOpenctopn 17325 ×s cxps 17410 ∞Metcxmet 21277 MetOpencmopn 21282 TopSpctps 22848 ×t ctx 23476 ∞MetSpcxms 24233 toMetSpctms 24235 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5217 ax-sep 5234 ax-nul 5244 ax-pow 5303 ax-pr 5370 ax-un 7668 ax-cnex 11062 ax-resscn 11063 ax-1cn 11064 ax-icn 11065 ax-addcl 11066 ax-addrcl 11067 ax-mulcl 11068 ax-mulrcl 11069 ax-mulcom 11070 ax-addass 11071 ax-mulass 11072 ax-distr 11073 ax-i2m1 11074 ax-1ne0 11075 ax-1rid 11076 ax-rnegex 11077 ax-rrecex 11078 ax-cnre 11079 ax-pre-lttri 11080 ax-pre-lttrn 11081 ax-pre-ltadd 11082 ax-pre-mulgt0 11083 ax-pre-sup 11084 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4476 df-pw 4552 df-sn 4577 df-pr 4579 df-tp 4581 df-op 4583 df-uni 4860 df-int 4898 df-iun 4943 df-iin 4944 df-br 5092 df-opab 5154 df-mpt 5173 df-tr 5199 df-id 5511 df-eprel 5516 df-po 5524 df-so 5525 df-fr 5569 df-se 5570 df-we 5571 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-isom 6490 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-of 7610 df-om 7797 df-1st 7921 df-2nd 7922 df-supp 8091 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-1o 8385 df-2o 8386 df-er 8622 df-map 8752 df-ixp 8822 df-en 8870 df-dom 8871 df-sdom 8872 df-fin 8873 df-fsupp 9246 df-fi 9295 df-sup 9326 df-inf 9327 df-oi 9396 df-card 9832 df-pnf 11148 df-mnf 11149 df-xr 11150 df-ltxr 11151 df-le 11152 df-sub 11346 df-neg 11347 df-div 11775 df-nn 12126 df-2 12188 df-3 12189 df-4 12190 df-5 12191 df-6 12192 df-7 12193 df-8 12194 df-9 12195 df-n0 12382 df-z 12469 df-dec 12589 df-uz 12733 df-q 12847 df-rp 12891 df-xneg 13011 df-xadd 13012 df-xmul 13013 df-icc 13252 df-fz 13408 df-fzo 13555 df-seq 13909 df-hash 14238 df-struct 17058 df-sets 17075 df-slot 17093 df-ndx 17105 df-base 17121 df-ress 17142 df-plusg 17174 df-mulr 17175 df-sca 17177 df-vsca 17178 df-ip 17179 df-tset 17180 df-ple 17181 df-ds 17183 df-hom 17185 df-cco 17186 df-rest 17326 df-topn 17327 df-0g 17345 df-gsum 17346 df-topgen 17347 df-pt 17348 df-prds 17351 df-xrs 17406 df-qtop 17411 df-imas 17412 df-xps 17414 df-mre 17488 df-mrc 17489 df-acs 17491 df-mgm 18548 df-sgrp 18627 df-mnd 18643 df-submnd 18692 df-mulg 18981 df-cntz 19230 df-cmn 19695 df-psmet 21284 df-xmet 21285 df-bl 21287 df-mopn 21288 df-top 22810 df-topon 22827 df-topsp 22849 df-bases 22862 df-cn 23143 df-cnp 23144 df-tx 23478 df-hmeo 23671 df-xms 24236 df-tms 24238 |
| This theorem is referenced by: txmetcnp 24463 |
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