iocopn - Mathbox for Glauco Siliprandi

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Theorem iocopn 44786

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 24629	. . . . 5 ⊢ (topGen‘ran (,)) ∈ Top
3	1, 2	eqeltri 2823	. . . 4 ⊢ 𝐾 ∈ Top
4	3	a1i 11	. . 3 ⊢ (𝜑 → 𝐾 ∈ Top)
5		ovexd 7439	. . 3 ⊢ (𝜑 → (𝐴(,]𝐵) ∈ V)
6		iooretop 24633	. . . . 5 ⊢ (𝐶(,)+∞) ∈ (topGen‘ran (,))
7	6, 1	eleqtrri 2826	. . . 4 ⊢ (𝐶(,)+∞) ∈ 𝐾
8	7	a1i 11	. . 3 ⊢ (𝜑 → (𝐶(,)+∞) ∈ 𝐾)
9		elrestr 17381	. . 3 ⊢ ((𝐾 ∈ Top ∧ (𝐴(,]𝐵) ∈ V ∧ (𝐶(,)+∞) ∈ 𝐾) → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ∈ (𝐾 ↾_t (𝐴(,]𝐵)))
10	4, 5, 8, 9	syl3anc 1368	. 2 ⊢ (𝜑 → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ∈ (𝐾 ↾_t (𝐴(,]𝐵)))
11		iocopn.c	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
12	11	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐶 ∈ ℝ^*)
13		iocopn.b	. . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ)
14	13	rexrd 11265	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
15	14	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐵 ∈ ℝ^*)
16		elinel1 4190	. . . . . . . 8 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ (𝐶(,)+∞))
17		elioore 13357	. . . . . . . 8 ⊢ (𝑥 ∈ (𝐶(,)+∞) → 𝑥 ∈ ℝ)
18	16, 17	syl 17	. . . . . . 7 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ ℝ)
19	18	rexrd 11265	. . . . . 6 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ ℝ^*)
20	19	adantl 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ ℝ^*)
21		pnfxr 11269	. . . . . . 7 ⊢ +∞ ∈ ℝ^*
22	21	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → +∞ ∈ ℝ^*)
23	16	adantl 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ (𝐶(,)+∞))
24		ioogtlb 44761	. . . . . 6 ⊢ ((𝐶 ∈ ℝ^* ∧ +∞ ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,)+∞)) → 𝐶 < 𝑥)
25	12, 22, 23, 24	syl3anc 1368	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐶 < 𝑥)
26		iocopn.a	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℝ^*)
27	26	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐴 ∈ ℝ^*)
28		elinel2 4191	. . . . . . 7 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ (𝐴(,]𝐵))
29	28	adantl 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ (𝐴(,]𝐵))
30		iocleub 44769	. . . . . 6 ⊢ ((𝐴 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐴(,]𝐵)) → 𝑥 ≤ 𝐵)
31	27, 15, 29, 30	syl3anc 1368	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ≤ 𝐵)
32	12, 15, 20, 25, 31	eliocd 44773	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ (𝐶(,]𝐵))
33	11	adantr 480	. . . . . 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 13407	. . . . . . . 8 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ) → (𝐶(,]𝐵) ⊆ ℝ)
37	11, 35, 36	syl2anc 583	. . . . . . 7 ⊢ (𝜑 → (𝐶(,]𝐵) ⊆ ℝ)
38	37	sselda 3977	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ ℝ)
39	14	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐵 ∈ ℝ^*)
40		simpr 484	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐶(,]𝐵))
41		iocgtlb 44768	. . . . . . 7 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐶 < 𝑥)
42	33, 39, 40, 41	syl3anc 1368	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐶 < 𝑥)
43	38	ltpnfd 13104	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 < +∞)
44	33, 34, 38, 42, 43	eliood 44764	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐶(,)+∞))
45	26	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 ∈ ℝ^*)
46	38	rexrd 11265	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ ℝ^*)
47		iocopn.alec	. . . . . . . 8 ⊢ (𝜑 → 𝐴 ≤ 𝐶)
48	47	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 ≤ 𝐶)
49	45, 33, 46, 48, 42	xrlelttrd 13142	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 < 𝑥)
50		iocleub 44769	. . . . . . 7 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ≤ 𝐵)
51	33, 39, 40, 50	syl3anc 1368	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ≤ 𝐵)
52	45, 39, 46, 49, 51	eliocd 44773	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐴(,]𝐵))
53	44, 52	elind 4189	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)))
54	32, 53	impbida 798	. . 3 ⊢ (𝜑 → (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ↔ 𝑥 ∈ (𝐶(,]𝐵)))
55	54	eqrdv 2724	. 2 ⊢ (𝜑 → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) = (𝐶(,]𝐵))
56		iocopn.j	. . . 4 ⊢ 𝐽 = (𝐾 ↾_t (𝐴(,]𝐵))
57	56	eqcomi 2735	. . 3 ⊢ (𝐾 ↾_t (𝐴(,]𝐵)) = 𝐽
58	57	a1i 11	. 2 ⊢ (𝜑 → (𝐾 ↾_t (𝐴(,]𝐵)) = 𝐽)
59	10, 55, 58	3eltr3d 2841	1 ⊢ (𝜑 → (𝐶(,]𝐵) ∈ 𝐽)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1533 ∈ wcel 2098 Vcvv 3468 ∩ cin 3942 ⊆ wss 3943 class class class wbr 5141 ran crn 5670 ‘cfv 6536 (class class class)co 7404 ℝcr 11108 +∞cpnf 11246 ℝ^*cxr 11248 < clt 11249 ≤ cle 11250 (,)cioo 13327 (,]cioc 13328 ↾_t crest 17373 topGenctg 17390 Topctop 22746

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7852 df-1st 7971 df-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-sup 9436 df-inf 9437 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-div 11873 df-nn 12214 df-n0 12474 df-z 12560 df-uz 12824 df-q 12934 df-ioo 13331 df-ioc 13332 df-rest 17375 df-topgen 17396 df-top 22747 df-bases 22800

This theorem is referenced by: fouriersw 45500

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