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| Mirrors > Home > MPE Home > Th. List > tmsxpsval2 | Structured version Visualization version GIF version | ||
| Description: Value of the product of two metrics. (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)) |
| tmsxpsval.a | ⊢ (𝜑 → 𝐴 ∈ 𝑋) |
| tmsxpsval.b | ⊢ (𝜑 → 𝐵 ∈ 𝑌) |
| tmsxpsval.c | ⊢ (𝜑 → 𝐶 ∈ 𝑋) |
| tmsxpsval.d | ⊢ (𝜑 → 𝐷 ∈ 𝑌) |
| Ref | Expression |
|---|---|
| tmsxpsval2 | ⊢ (𝜑 → (〈𝐴, 𝐵〉𝑃〈𝐶, 𝐷〉) = if((𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷), (𝐵𝑁𝐷), (𝐴𝑀𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tmsxps.p | . . 3 ⊢ 𝑃 = (dist‘((toMetSp‘𝑀) ×s (toMetSp‘𝑁))) | |
| 2 | tmsxps.1 | . . 3 ⊢ (𝜑 → 𝑀 ∈ (∞Met‘𝑋)) | |
| 3 | tmsxps.2 | . . 3 ⊢ (𝜑 → 𝑁 ∈ (∞Met‘𝑌)) | |
| 4 | tmsxpsval.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑋) | |
| 5 | tmsxpsval.b | . . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑌) | |
| 6 | tmsxpsval.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ 𝑋) | |
| 7 | tmsxpsval.d | . . 3 ⊢ (𝜑 → 𝐷 ∈ 𝑌) | |
| 8 | 1, 2, 3, 4, 5, 6, 7 | tmsxpsval 24451 | . 2 ⊢ (𝜑 → (〈𝐴, 𝐵〉𝑃〈𝐶, 𝐷〉) = sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < )) |
| 9 | xrltso 13037 | . . 3 ⊢ < Or ℝ* | |
| 10 | xmetcl 24244 | . . . 4 ⊢ ((𝑀 ∈ (∞Met‘𝑋) ∧ 𝐴 ∈ 𝑋 ∧ 𝐶 ∈ 𝑋) → (𝐴𝑀𝐶) ∈ ℝ*) | |
| 11 | 2, 4, 6, 10 | syl3anc 1373 | . . 3 ⊢ (𝜑 → (𝐴𝑀𝐶) ∈ ℝ*) |
| 12 | xmetcl 24244 | . . . 4 ⊢ ((𝑁 ∈ (∞Met‘𝑌) ∧ 𝐵 ∈ 𝑌 ∧ 𝐷 ∈ 𝑌) → (𝐵𝑁𝐷) ∈ ℝ*) | |
| 13 | 3, 5, 7, 12 | syl3anc 1373 | . . 3 ⊢ (𝜑 → (𝐵𝑁𝐷) ∈ ℝ*) |
| 14 | suppr 9356 | . . 3 ⊢ (( < Or ℝ* ∧ (𝐴𝑀𝐶) ∈ ℝ* ∧ (𝐵𝑁𝐷) ∈ ℝ*) → sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ) = if((𝐵𝑁𝐷) < (𝐴𝑀𝐶), (𝐴𝑀𝐶), (𝐵𝑁𝐷))) | |
| 15 | 9, 11, 13, 14 | mp3an2i 1468 | . 2 ⊢ (𝜑 → sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ) = if((𝐵𝑁𝐷) < (𝐴𝑀𝐶), (𝐴𝑀𝐶), (𝐵𝑁𝐷))) |
| 16 | xrltnle 11176 | . . . . 5 ⊢ (((𝐵𝑁𝐷) ∈ ℝ* ∧ (𝐴𝑀𝐶) ∈ ℝ*) → ((𝐵𝑁𝐷) < (𝐴𝑀𝐶) ↔ ¬ (𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷))) | |
| 17 | 13, 11, 16 | syl2anc 584 | . . . 4 ⊢ (𝜑 → ((𝐵𝑁𝐷) < (𝐴𝑀𝐶) ↔ ¬ (𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷))) |
| 18 | 17 | ifbid 4499 | . . 3 ⊢ (𝜑 → if((𝐵𝑁𝐷) < (𝐴𝑀𝐶), (𝐴𝑀𝐶), (𝐵𝑁𝐷)) = if(¬ (𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷), (𝐴𝑀𝐶), (𝐵𝑁𝐷))) |
| 19 | ifnot 4528 | . . 3 ⊢ if(¬ (𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷), (𝐴𝑀𝐶), (𝐵𝑁𝐷)) = if((𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷), (𝐵𝑁𝐷), (𝐴𝑀𝐶)) | |
| 20 | 18, 19 | eqtrdi 2782 | . 2 ⊢ (𝜑 → if((𝐵𝑁𝐷) < (𝐴𝑀𝐶), (𝐴𝑀𝐶), (𝐵𝑁𝐷)) = if((𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷), (𝐵𝑁𝐷), (𝐴𝑀𝐶))) |
| 21 | 8, 15, 20 | 3eqtrd 2770 | 1 ⊢ (𝜑 → (〈𝐴, 𝐵〉𝑃〈𝐶, 𝐷〉) = if((𝐴𝑀𝐶) ≤ (𝐵𝑁𝐷), (𝐵𝑁𝐷), (𝐴𝑀𝐶))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 = wceq 1541 ∈ wcel 2111 ifcif 4475 {cpr 4578 〈cop 4582 class class class wbr 5091 Or wor 5523 ‘cfv 6481 (class class class)co 7346 supcsup 9324 ℝ*cxr 11142 < clt 11143 ≤ cle 11144 distcds 17167 ×s cxps 17407 ∞Metcxmet 21274 toMetSpctms 24232 |
| 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 11059 ax-resscn 11060 ax-1cn 11061 ax-icn 11062 ax-addcl 11063 ax-addrcl 11064 ax-mulcl 11065 ax-mulrcl 11066 ax-mulcom 11067 ax-addass 11068 ax-mulass 11069 ax-distr 11070 ax-i2m1 11071 ax-1ne0 11072 ax-1rid 11073 ax-rnegex 11074 ax-rrecex 11075 ax-cnre 11076 ax-pre-lttri 11077 ax-pre-lttrn 11078 ax-pre-ltadd 11079 ax-pre-mulgt0 11080 ax-pre-sup 11081 |
| 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-sup 9326 df-inf 9327 df-oi 9396 df-card 9829 df-pnf 11145 df-mnf 11146 df-xr 11147 df-ltxr 11148 df-le 11149 df-sub 11343 df-neg 11344 df-div 11772 df-nn 12123 df-2 12185 df-3 12186 df-4 12187 df-5 12188 df-6 12189 df-7 12190 df-8 12191 df-9 12192 df-n0 12379 df-z 12466 df-dec 12586 df-uz 12730 df-q 12844 df-rp 12888 df-xneg 13008 df-xadd 13009 df-xmul 13010 df-icc 13249 df-fz 13405 df-fzo 13552 df-seq 13906 df-hash 14235 df-struct 17055 df-sets 17072 df-slot 17090 df-ndx 17102 df-base 17118 df-ress 17139 df-plusg 17171 df-mulr 17172 df-sca 17174 df-vsca 17175 df-ip 17176 df-tset 17177 df-ple 17178 df-ds 17180 df-hom 17182 df-cco 17183 df-rest 17323 df-topn 17324 df-0g 17342 df-gsum 17343 df-topgen 17344 df-prds 17348 df-xrs 17403 df-imas 17409 df-xps 17411 df-mre 17485 df-mrc 17486 df-acs 17488 df-mgm 18545 df-sgrp 18624 df-mnd 18640 df-submnd 18689 df-mulg 18978 df-cntz 19227 df-cmn 19692 df-psmet 21281 df-xmet 21282 df-bl 21284 df-mopn 21285 df-top 22807 df-topon 22824 df-topsp 22846 df-bases 22859 df-xms 24233 df-tms 24235 |
| This theorem is referenced by: txmetcnp 24460 |
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