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| Mirrors > Home > MPE Home > Th. List > tmsxps | 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)) |
| Ref | Expression |
|---|---|
| tmsxps | ⊢ (𝜑 → 𝑃 ∈ (∞Met‘(𝑋 × 𝑌))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2761 | . . . . 5 ⊢ ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) = ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) | |
| 2 | eqid 2761 | . . . . 5 ⊢ (Base‘(toMetSp‘𝑀)) = (Base‘(toMetSp‘𝑀)) | |
| 3 | eqid 2761 | . . . . 5 ⊢ (Base‘(toMetSp‘𝑁)) = (Base‘(toMetSp‘𝑁)) | |
| 4 | tmsxps.1 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ (∞Met‘𝑋)) | |
| 5 | eqid 2761 | . . . . . . 7 ⊢ (toMetSp‘𝑀) = (toMetSp‘𝑀) | |
| 6 | 5 | tmsxms 24526 | . . . . . 6 ⊢ (𝑀 ∈ (∞Met‘𝑋) → (toMetSp‘𝑀) ∈ ∞MetSp) |
| 7 | 4, 6 | syl 17 | . . . . 5 ⊢ (𝜑 → (toMetSp‘𝑀) ∈ ∞MetSp) |
| 8 | tmsxps.2 | . . . . . 6 ⊢ (𝜑 → 𝑁 ∈ (∞Met‘𝑌)) | |
| 9 | eqid 2761 | . . . . . . 7 ⊢ (toMetSp‘𝑁) = (toMetSp‘𝑁) | |
| 10 | 9 | tmsxms 24526 | . . . . . 6 ⊢ (𝑁 ∈ (∞Met‘𝑌) → (toMetSp‘𝑁) ∈ ∞MetSp) |
| 11 | 8, 10 | syl 17 | . . . . 5 ⊢ (𝜑 → (toMetSp‘𝑁) ∈ ∞MetSp) |
| 12 | tmsxps.p | . . . . 5 ⊢ 𝑃 = (dist‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) | |
| 13 | 1, 2, 3, 7, 11, 12 | xpsdsfn2 24418 | . . . 4 ⊢ (𝜑 → 𝑃 Fn ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) |
| 14 | fnresdm 6636 | . . . 4 ⊢ (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) | |
| 15 | 13, 14 | syl 17 | . . 3 ⊢ (𝜑 → (𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) = 𝑃) |
| 16 | 1 | xpsxms 24574 | . . . . 5 ⊢ (((toMetSp‘𝑀) ∈ ∞MetSp ∧ (toMetSp‘𝑁) ∈ ∞MetSp) → ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) ∈ ∞MetSp) |
| 17 | 7, 11, 16 | syl2anc 593 | . . . 4 ⊢ (𝜑 → ((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) ∈ ∞MetSp) |
| 18 | eqid 2761 | . . . . 5 ⊢ (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) = (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) | |
| 19 | 18, 12 | xmsxmet2 24499 | . . . 4 ⊢ (((toMetSp‘𝑀) ×s (toMetSp‘𝑁)) ∈ ∞MetSp → (𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) ∈ (∞Met‘(Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) |
| 20 | 17, 19 | syl 17 | . . 3 ⊢ (𝜑 → (𝑃 ↾ ((Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) × (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) ∈ (∞Met‘(Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) |
| 21 | 15, 20 | eqeltrrd 2862 | . 2 ⊢ (𝜑 → 𝑃 ∈ (∞Met‘(Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) |
| 22 | 5 | tmsbas 24523 | . . . . . 6 ⊢ (𝑀 ∈ (∞Met‘𝑋) → 𝑋 = (Base‘(toMetSp‘𝑀))) |
| 23 | 4, 22 | syl 17 | . . . . 5 ⊢ (𝜑 → 𝑋 = (Base‘(toMetSp‘𝑀))) |
| 24 | 9 | tmsbas 24523 | . . . . . 6 ⊢ (𝑁 ∈ (∞Met‘𝑌) → 𝑌 = (Base‘(toMetSp‘𝑁))) |
| 25 | 8, 24 | syl 17 | . . . . 5 ⊢ (𝜑 → 𝑌 = (Base‘(toMetSp‘𝑁))) |
| 26 | 23, 25 | xpeq12d 5676 | . . . 4 ⊢ (𝜑 → (𝑋 × 𝑌) = ((Base‘(toMetSp‘𝑀)) × (Base‘(toMetSp‘𝑁)))) |
| 27 | 1, 2, 3, 7, 11 | xpsbas 17585 | . . . 4 ⊢ (𝜑 → ((Base‘(toMetSp‘𝑀)) × (Base‘(toMetSp‘𝑁))) = (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁)))) |
| 28 | 26, 27 | eqtrd 2796 | . . 3 ⊢ (𝜑 → (𝑋 × 𝑌) = (Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁)))) |
| 29 | 28 | fveq2d 6867 | . 2 ⊢ (𝜑 → (∞Met‘(𝑋 × 𝑌)) = (∞Met‘(Base‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))))) |
| 30 | 21, 29 | eleqtrrd 2864 | 1 ⊢ (𝜑 → 𝑃 ∈ (∞Met‘(𝑋 × 𝑌))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 × cxp 5643 ↾ cres 5647 Fn wfn 6512 ‘cfv 6517 (class class class)co 7392 Basecbs 17228 distcds 17278 ×s cxps 17519 ∞Metcxmet 21389 ∞MetSpcxms 24357 toMetSpctms 24359 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5226 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 ax-pre-sup 11148 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-tp 4586 df-op 4588 df-uni 4865 df-int 4905 df-iun 4950 df-iin 4951 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-se 5599 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-isom 6526 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-of 7656 df-om 7843 df-1st 7966 df-2nd 7967 df-supp 8136 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-1o 8432 df-2o 8433 df-er 8673 df-map 8805 df-ixp 8876 df-en 8924 df-dom 8925 df-sdom 8926 df-fin 8927 df-fsupp 9305 df-fi 9354 df-sup 9385 df-inf 9386 df-oi 9455 df-card 9894 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12208 df-2 12277 df-3 12278 df-4 12279 df-5 12280 df-6 12281 df-7 12282 df-8 12283 df-9 12284 df-n0 12479 df-z 12566 df-dec 12686 df-uz 12837 df-q 12947 df-rp 12991 df-xneg 13111 df-xadd 13112 df-xmul 13113 df-icc 13353 df-fz 13510 df-fzo 13657 df-seq 14012 df-hash 14341 df-struct 17166 df-sets 17183 df-slot 17201 df-ndx 17213 df-base 17229 df-ress 17250 df-plusg 17282 df-mulr 17283 df-sca 17285 df-vsca 17286 df-ip 17287 df-tset 17288 df-ple 17289 df-ds 17291 df-hom 17293 df-cco 17294 df-rest 17434 df-topn 17435 df-0g 17453 df-gsum 17454 df-topgen 17455 df-pt 17456 df-prds 17459 df-xrs 17515 df-qtop 17520 df-imas 17521 df-xps 17523 df-mre 17597 df-mrc 17598 df-acs 17600 df-mgm 18657 df-sgrp 18736 df-mnd 18752 df-submnd 18801 df-mulg 19093 df-cntz 19340 df-cmn 19805 df-psmet 21396 df-xmet 21397 df-bl 21399 df-mopn 21400 df-top 22934 df-topon 22951 df-topsp 22973 df-bases 22986 df-xms 24360 df-tms 24362 |
| This theorem is referenced by: txmetcnp 24587 |
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