imasf1obl - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > imasf1obl		Structured version Visualization version GIF version

Theorem imasf1obl 24403

Description: The image of a metric space ball. (Contributed by Mario Carneiro, 28-Aug-2015.)

**Hypotheses**
Ref	Expression
imasf1obl.u	⊢ (𝜑 → 𝑈 = (𝐹 “_s 𝑅))
imasf1obl.v	⊢ (𝜑 → 𝑉 = (Base‘𝑅))
imasf1obl.f	⊢ (𝜑 → 𝐹:𝑉–1-1-onto→𝐵)
imasf1obl.r	⊢ (𝜑 → 𝑅 ∈ 𝑍)
imasf1obl.e	⊢ 𝐸 = ((dist‘𝑅) ↾ (𝑉 × 𝑉))
imasf1obl.d	⊢ 𝐷 = (dist‘𝑈)
imasf1obl.m	⊢ (𝜑 → 𝐸 ∈ (∞Met‘𝑉))
imasf1obl.x	⊢ (𝜑 → 𝑃 ∈ 𝑉)
imasf1obl.s	⊢ (𝜑 → 𝑆 ∈ ℝ^*)

**Assertion**
Ref	Expression
imasf1obl	⊢ (𝜑 → ((𝐹‘𝑃)(ball‘𝐷)𝑆) = (𝐹 “ (𝑃(ball‘𝐸)𝑆)))

Proof of Theorem imasf1obl Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		imasf1obl.f	. . . . . . . . . 10 ⊢ (𝜑 → 𝐹:𝑉–1-1-onto→𝐵)
2		f1ocnvfv2 7211	. . . . . . . . . 10 ⊢ ((𝐹:𝑉–1-1-onto→𝐵 ∧ 𝑥 ∈ 𝐵) → (𝐹‘(^◡𝐹‘𝑥)) = 𝑥)
3	1, 2	sylan 580	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝐹‘(^◡𝐹‘𝑥)) = 𝑥)
4	3	oveq2d 7362	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((𝐹‘𝑃)𝐷(𝐹‘(^◡𝐹‘𝑥))) = ((𝐹‘𝑃)𝐷𝑥))
5		imasf1obl.u	. . . . . . . . . 10 ⊢ (𝜑 → 𝑈 = (𝐹 “_s 𝑅))
6	5	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑈 = (𝐹 “_s 𝑅))
7		imasf1obl.v	. . . . . . . . . 10 ⊢ (𝜑 → 𝑉 = (Base‘𝑅))
8	7	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑉 = (Base‘𝑅))
9	1	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐹:𝑉–1-1-onto→𝐵)
10		imasf1obl.r	. . . . . . . . . 10 ⊢ (𝜑 → 𝑅 ∈ 𝑍)
11	10	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑅 ∈ 𝑍)
12		imasf1obl.e	. . . . . . . . 9 ⊢ 𝐸 = ((dist‘𝑅) ↾ (𝑉 × 𝑉))
13		imasf1obl.d	. . . . . . . . 9 ⊢ 𝐷 = (dist‘𝑈)
14		imasf1obl.m	. . . . . . . . . 10 ⊢ (𝜑 → 𝐸 ∈ (∞Met‘𝑉))
15	14	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐸 ∈ (∞Met‘𝑉))
16		imasf1obl.x	. . . . . . . . . 10 ⊢ (𝜑 → 𝑃 ∈ 𝑉)
17	16	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑃 ∈ 𝑉)
18		f1ocnv 6775	. . . . . . . . . . . 12 ⊢ (𝐹:𝑉–1-1-onto→𝐵 → ^◡𝐹:𝐵–1-1-onto→𝑉)
19	1, 18	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → ^◡𝐹:𝐵–1-1-onto→𝑉)
20		f1of 6763	. . . . . . . . . . 11 ⊢ (^◡𝐹:𝐵–1-1-onto→𝑉 → ^◡𝐹:𝐵⟶𝑉)
21	19, 20	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → ^◡𝐹:𝐵⟶𝑉)
22	21	ffvelcdmda 7017	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (^◡𝐹‘𝑥) ∈ 𝑉)
23	6, 8, 9, 11, 12, 13, 15, 17, 22	imasdsf1o 24289	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((𝐹‘𝑃)𝐷(𝐹‘(^◡𝐹‘𝑥))) = (𝑃𝐸(^◡𝐹‘𝑥)))
24	4, 23	eqtr3d 2768	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((𝐹‘𝑃)𝐷𝑥) = (𝑃𝐸(^◡𝐹‘𝑥)))
25	24	breq1d 5099	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (((𝐹‘𝑃)𝐷𝑥) < 𝑆 ↔ (𝑃𝐸(^◡𝐹‘𝑥)) < 𝑆))
26		imasf1obl.s	. . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ ℝ^*)
27	26	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑆 ∈ ℝ^*)
28		elbl2 24305	. . . . . . 7 ⊢ (((𝐸 ∈ (∞Met‘𝑉) ∧ 𝑆 ∈ ℝ^*) ∧ (𝑃 ∈ 𝑉 ∧ (^◡𝐹‘𝑥) ∈ 𝑉)) → ((^◡𝐹‘𝑥) ∈ (𝑃(ball‘𝐸)𝑆) ↔ (𝑃𝐸(^◡𝐹‘𝑥)) < 𝑆))
29	15, 27, 17, 22, 28	syl22anc 838	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((^◡𝐹‘𝑥) ∈ (𝑃(ball‘𝐸)𝑆) ↔ (𝑃𝐸(^◡𝐹‘𝑥)) < 𝑆))
30	25, 29	bitr4d 282	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (((𝐹‘𝑃)𝐷𝑥) < 𝑆 ↔ (^◡𝐹‘𝑥) ∈ (𝑃(ball‘𝐸)𝑆)))
31	30	pm5.32da 579	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ 𝐵 ∧ ((𝐹‘𝑃)𝐷𝑥) < 𝑆) ↔ (𝑥 ∈ 𝐵 ∧ (^◡𝐹‘𝑥) ∈ (𝑃(ball‘𝐸)𝑆))))
32	5, 7, 1, 10, 12, 13, 14	imasf1oxmet 24290	. . . . 5 ⊢ (𝜑 → 𝐷 ∈ (∞Met‘𝐵))
33		f1of 6763	. . . . . . 7 ⊢ (𝐹:𝑉–1-1-onto→𝐵 → 𝐹:𝑉⟶𝐵)
34	1, 33	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐹:𝑉⟶𝐵)
35	34, 16	ffvelcdmd 7018	. . . . 5 ⊢ (𝜑 → (𝐹‘𝑃) ∈ 𝐵)
36		elbl 24303	. . . . 5 ⊢ ((𝐷 ∈ (∞Met‘𝐵) ∧ (𝐹‘𝑃) ∈ 𝐵 ∧ 𝑆 ∈ ℝ^*) → (𝑥 ∈ ((𝐹‘𝑃)(ball‘𝐷)𝑆) ↔ (𝑥 ∈ 𝐵 ∧ ((𝐹‘𝑃)𝐷𝑥) < 𝑆)))
37	32, 35, 26, 36	syl3anc 1373	. . . 4 ⊢ (𝜑 → (𝑥 ∈ ((𝐹‘𝑃)(ball‘𝐷)𝑆) ↔ (𝑥 ∈ 𝐵 ∧ ((𝐹‘𝑃)𝐷𝑥) < 𝑆)))
38		f1ofn 6764	. . . . 5 ⊢ (^◡𝐹:𝐵–1-1-onto→𝑉 → ^◡𝐹 Fn 𝐵)
39		elpreima 6991	. . . . 5 ⊢ (^◡𝐹 Fn 𝐵 → (𝑥 ∈ (^◡^◡𝐹 “ (𝑃(ball‘𝐸)𝑆)) ↔ (𝑥 ∈ 𝐵 ∧ (^◡𝐹‘𝑥) ∈ (𝑃(ball‘𝐸)𝑆))))
40	19, 38, 39	3syl 18	. . . 4 ⊢ (𝜑 → (𝑥 ∈ (^◡^◡𝐹 “ (𝑃(ball‘𝐸)𝑆)) ↔ (𝑥 ∈ 𝐵 ∧ (^◡𝐹‘𝑥) ∈ (𝑃(ball‘𝐸)𝑆))))
41	31, 37, 40	3bitr4d 311	. . 3 ⊢ (𝜑 → (𝑥 ∈ ((𝐹‘𝑃)(ball‘𝐷)𝑆) ↔ 𝑥 ∈ (^◡^◡𝐹 “ (𝑃(ball‘𝐸)𝑆))))
42	41	eqrdv 2729	. 2 ⊢ (𝜑 → ((𝐹‘𝑃)(ball‘𝐷)𝑆) = (^◡^◡𝐹 “ (𝑃(ball‘𝐸)𝑆)))
43		imacnvcnv 6153	. 2 ⊢ (^◡^◡𝐹 “ (𝑃(ball‘𝐸)𝑆)) = (𝐹 “ (𝑃(ball‘𝐸)𝑆))
44	42, 43	eqtrdi 2782	1 ⊢ (𝜑 → ((𝐹‘𝑃)(ball‘𝐷)𝑆) = (𝐹 “ (𝑃(ball‘𝐸)𝑆)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1541 ∈ wcel 2111 class class class wbr 5089 × cxp 5612 ^◡ccnv 5613 ↾ cres 5616 “ cima 5617 Fn wfn 6476 ⟶wf 6477 –1-1-onto→wf1o 6480 ‘cfv 6481 (class class class)co 7346 ℝ^*cxr 11145 < clt 11146 Basecbs 17120 distcds 17170 “_s cimas 17408 ∞Metcxmet 21276 ballcbl 21278

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 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 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 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-tp 4578 df-op 4580 df-uni 4857 df-int 4896 df-iun 4941 df-iin 4942 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-se 5568 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 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-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 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-rp 12891 df-xneg 13011 df-xadd 13012 df-xmul 13013 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-0g 17345 df-gsum 17346 df-xrs 17406 df-imas 17412 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 19229 df-cmn 19694 df-psmet 21283 df-xmet 21284 df-bl 21286

This theorem is referenced by: imasf1oxms 24404

W3C validator