iocopn - Mathbox for Glauco Siliprandi

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Theorem iocopn 44219

Description: A left-open right-closed interval is an open set of the standard topology restricted to an interval that contains the original interval and has the same upper bound. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

**Hypotheses**
Ref	Expression
iocopn.a	⊢ (𝜑 → 𝐴 ∈ ℝ^*)
iocopn.c	⊢ (𝜑 → 𝐶 ∈ ℝ^*)
iocopn.b	⊢ (𝜑 → 𝐵 ∈ ℝ)
iocopn.k	⊢ 𝐾 = (topGen‘ran (,))
iocopn.j	⊢ 𝐽 = (𝐾 ↾_t (𝐴(,]𝐵))
iocopn.alec	⊢ (𝜑 → 𝐴 ≤ 𝐶)
iocopn.6	⊢ (𝜑 → 𝐵 ∈ ℝ)

**Assertion**
Ref	Expression
iocopn	⊢ (𝜑 → (𝐶(,]𝐵) ∈ 𝐽)

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

Step	Hyp	Ref	Expression
1		iocopn.k	. . . . 5 ⊢ 𝐾 = (topGen‘ran (,))
2		retop 24269	. . . . 5 ⊢ (topGen‘ran (,)) ∈ Top
3	1, 2	eqeltri 2829	. . . 4 ⊢ 𝐾 ∈ Top
4	3	a1i 11	. . 3 ⊢ (𝜑 → 𝐾 ∈ Top)
5		ovexd 7440	. . 3 ⊢ (𝜑 → (𝐴(,]𝐵) ∈ V)
6		iooretop 24273	. . . . 5 ⊢ (𝐶(,)+∞) ∈ (topGen‘ran (,))
7	6, 1	eleqtrri 2832	. . . 4 ⊢ (𝐶(,)+∞) ∈ 𝐾
8	7	a1i 11	. . 3 ⊢ (𝜑 → (𝐶(,)+∞) ∈ 𝐾)
9		elrestr 17370	. . 3 ⊢ ((𝐾 ∈ Top ∧ (𝐴(,]𝐵) ∈ V ∧ (𝐶(,)+∞) ∈ 𝐾) → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ∈ (𝐾 ↾_t (𝐴(,]𝐵)))
10	4, 5, 8, 9	syl3anc 1371	. 2 ⊢ (𝜑 → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ∈ (𝐾 ↾_t (𝐴(,]𝐵)))
11		iocopn.c	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
12	11	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐶 ∈ ℝ^*)
13		iocopn.b	. . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ)
14	13	rexrd 11260	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
15	14	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐵 ∈ ℝ^*)
16		elinel1 4194	. . . . . . . 8 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ (𝐶(,)+∞))
17		elioore 13350	. . . . . . . 8 ⊢ (𝑥 ∈ (𝐶(,)+∞) → 𝑥 ∈ ℝ)
18	16, 17	syl 17	. . . . . . 7 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ ℝ)
19	18	rexrd 11260	. . . . . 6 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ ℝ^*)
20	19	adantl 482	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ ℝ^*)
21		pnfxr 11264	. . . . . . 7 ⊢ +∞ ∈ ℝ^*
22	21	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → +∞ ∈ ℝ^*)
23	16	adantl 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ (𝐶(,)+∞))
24		ioogtlb 44194	. . . . . 6 ⊢ ((𝐶 ∈ ℝ^* ∧ +∞ ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,)+∞)) → 𝐶 < 𝑥)
25	12, 22, 23, 24	syl3anc 1371	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐶 < 𝑥)
26		iocopn.a	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℝ^*)
27	26	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐴 ∈ ℝ^*)
28		elinel2 4195	. . . . . . 7 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ (𝐴(,]𝐵))
29	28	adantl 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ (𝐴(,]𝐵))
30		iocleub 44202	. . . . . 6 ⊢ ((𝐴 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐴(,]𝐵)) → 𝑥 ≤ 𝐵)
31	27, 15, 29, 30	syl3anc 1371	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ≤ 𝐵)
32	12, 15, 20, 25, 31	eliocd 44206	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ (𝐶(,]𝐵))
33	11	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐶 ∈ ℝ^*)
34	21	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → +∞ ∈ ℝ^*)
35		iocopn.6	. . . . . . . 8 ⊢ (𝜑 → 𝐵 ∈ ℝ)
36		iocssre 13400	. . . . . . . 8 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ) → (𝐶(,]𝐵) ⊆ ℝ)
37	11, 35, 36	syl2anc 584	. . . . . . 7 ⊢ (𝜑 → (𝐶(,]𝐵) ⊆ ℝ)
38	37	sselda 3981	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ ℝ)
39	14	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐵 ∈ ℝ^*)
40		simpr 485	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐶(,]𝐵))
41		iocgtlb 44201	. . . . . . 7 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐶 < 𝑥)
42	33, 39, 40, 41	syl3anc 1371	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐶 < 𝑥)
43	38	ltpnfd 13097	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 < +∞)
44	33, 34, 38, 42, 43	eliood 44197	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐶(,)+∞))
45	26	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 ∈ ℝ^*)
46	38	rexrd 11260	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ ℝ^*)
47		iocopn.alec	. . . . . . . 8 ⊢ (𝜑 → 𝐴 ≤ 𝐶)
48	47	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 ≤ 𝐶)
49	45, 33, 46, 48, 42	xrlelttrd 13135	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 < 𝑥)
50		iocleub 44202	. . . . . . 7 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ≤ 𝐵)
51	33, 39, 40, 50	syl3anc 1371	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ≤ 𝐵)
52	45, 39, 46, 49, 51	eliocd 44206	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐴(,]𝐵))
53	44, 52	elind 4193	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)))
54	32, 53	impbida 799	. . 3 ⊢ (𝜑 → (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ↔ 𝑥 ∈ (𝐶(,]𝐵)))
55	54	eqrdv 2730	. 2 ⊢ (𝜑 → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) = (𝐶(,]𝐵))
56		iocopn.j	. . . 4 ⊢ 𝐽 = (𝐾 ↾_t (𝐴(,]𝐵))
57	56	eqcomi 2741	. . 3 ⊢ (𝐾 ↾_t (𝐴(,]𝐵)) = 𝐽
58	57	a1i 11	. 2 ⊢ (𝜑 → (𝐾 ↾_t (𝐴(,]𝐵)) = 𝐽)
59	10, 55, 58	3eltr3d 2847	1 ⊢ (𝜑 → (𝐶(,]𝐵) ∈ 𝐽)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 Vcvv 3474 ∩ cin 3946 ⊆ wss 3947 class class class wbr 5147 ran crn 5676 ‘cfv 6540 (class class class)co 7405 ℝcr 11105 +∞cpnf 11241 ℝ^*cxr 11243 < clt 11244 ≤ cle 11245 (,)cioo 13320 (,]cioc 13321 ↾_t crest 17362 topGenctg 17379 Topctop 22386

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-pre-sup 11184

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-1st 7971 df-2nd 7972 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-sup 9433 df-inf 9434 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-div 11868 df-nn 12209 df-n0 12469 df-z 12555 df-uz 12819 df-q 12929 df-ioo 13324 df-ioc 13325 df-rest 17364 df-topgen 17385 df-top 22387 df-bases 22440

This theorem is referenced by: fouriersw 44933

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