iocopn - Mathbox for Glauco Siliprandi

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Theorem iocopn 44905

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 24691	. . . . 5 ⊢ (topGen‘ran (,)) ∈ Top
3	1, 2	eqeltri 2825	. . . 4 ⊢ 𝐾 ∈ Top
4	3	a1i 11	. . 3 ⊢ (𝜑 → 𝐾 ∈ Top)
5		ovexd 7455	. . 3 ⊢ (𝜑 → (𝐴(,]𝐵) ∈ V)
6		iooretop 24695	. . . . 5 ⊢ (𝐶(,)+∞) ∈ (topGen‘ran (,))
7	6, 1	eleqtrri 2828	. . . 4 ⊢ (𝐶(,)+∞) ∈ 𝐾
8	7	a1i 11	. . 3 ⊢ (𝜑 → (𝐶(,)+∞) ∈ 𝐾)
9		elrestr 17410	. . 3 ⊢ ((𝐾 ∈ Top ∧ (𝐴(,]𝐵) ∈ V ∧ (𝐶(,)+∞) ∈ 𝐾) → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ∈ (𝐾 ↾_t (𝐴(,]𝐵)))
10	4, 5, 8, 9	syl3anc 1369	. 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 11295	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
15	14	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝐵 ∈ ℝ^*)
16		elinel1 4195	. . . . . . . 8 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ (𝐶(,)+∞))
17		elioore 13387	. . . . . . . 8 ⊢ (𝑥 ∈ (𝐶(,)+∞) → 𝑥 ∈ ℝ)
18	16, 17	syl 17	. . . . . . 7 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ ℝ)
19	18	rexrd 11295	. . . . . 6 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ ℝ^*)
20	19	adantl 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ ℝ^*)
21		pnfxr 11299	. . . . . . 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 44880	. . . . . 6 ⊢ ((𝐶 ∈ ℝ^* ∧ +∞ ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,)+∞)) → 𝐶 < 𝑥)
25	12, 22, 23, 24	syl3anc 1369	. . . . 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 4196	. . . . . . 7 ⊢ (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) → 𝑥 ∈ (𝐴(,]𝐵))
29	28	adantl 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ∈ (𝐴(,]𝐵))
30		iocleub 44888	. . . . . 6 ⊢ ((𝐴 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐴(,]𝐵)) → 𝑥 ≤ 𝐵)
31	27, 15, 29, 30	syl3anc 1369	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵))) → 𝑥 ≤ 𝐵)
32	12, 15, 20, 25, 31	eliocd 44892	. . . 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 13437	. . . . . . . 8 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ) → (𝐶(,]𝐵) ⊆ ℝ)
37	11, 35, 36	syl2anc 583	. . . . . . 7 ⊢ (𝜑 → (𝐶(,]𝐵) ⊆ ℝ)
38	37	sselda 3980	. . . . . 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 44887	. . . . . . 7 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐶 < 𝑥)
42	33, 39, 40, 41	syl3anc 1369	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐶 < 𝑥)
43	38	ltpnfd 13134	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 < +∞)
44	33, 34, 38, 42, 43	eliood 44883	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐶(,)+∞))
45	26	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 ∈ ℝ^*)
46	38	rexrd 11295	. . . . . 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 13172	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝐴 < 𝑥)
50		iocleub 44888	. . . . . . 7 ⊢ ((𝐶 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ≤ 𝐵)
51	33, 39, 40, 50	syl3anc 1369	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ≤ 𝐵)
52	45, 39, 46, 49, 51	eliocd 44892	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ (𝐴(,]𝐵))
53	44, 52	elind 4194	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐶(,]𝐵)) → 𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)))
54	32, 53	impbida 800	. . 3 ⊢ (𝜑 → (𝑥 ∈ ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) ↔ 𝑥 ∈ (𝐶(,]𝐵)))
55	54	eqrdv 2726	. 2 ⊢ (𝜑 → ((𝐶(,)+∞) ∩ (𝐴(,]𝐵)) = (𝐶(,]𝐵))
56		iocopn.j	. . . 4 ⊢ 𝐽 = (𝐾 ↾_t (𝐴(,]𝐵))
57	56	eqcomi 2737	. . 3 ⊢ (𝐾 ↾_t (𝐴(,]𝐵)) = 𝐽
58	57	a1i 11	. 2 ⊢ (𝜑 → (𝐾 ↾_t (𝐴(,]𝐵)) = 𝐽)
59	10, 55, 58	3eltr3d 2843	1 ⊢ (𝜑 → (𝐶(,]𝐵) ∈ 𝐽)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1534 ∈ wcel 2099 Vcvv 3471 ∩ cin 3946 ⊆ wss 3947 class class class wbr 5148 ran crn 5679 ‘cfv 6548 (class class class)co 7420 ℝcr 11138 +∞cpnf 11276 ℝ^*cxr 11278 < clt 11279 ≤ cle 11280 (,)cioo 13357 (,]cioc 13358 ↾_t crest 17402 topGenctg 17419 Topctop 22808

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-cnex 11195 ax-resscn 11196 ax-1cn 11197 ax-icn 11198 ax-addcl 11199 ax-addrcl 11200 ax-mulcl 11201 ax-mulrcl 11202 ax-mulcom 11203 ax-addass 11204 ax-mulass 11205 ax-distr 11206 ax-i2m1 11207 ax-1ne0 11208 ax-1rid 11209 ax-rnegex 11210 ax-rrecex 11211 ax-cnre 11212 ax-pre-lttri 11213 ax-pre-lttrn 11214 ax-pre-ltadd 11215 ax-pre-mulgt0 11216 ax-pre-sup 11217

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7871 df-1st 7993 df-2nd 7994 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-er 8725 df-en 8965 df-dom 8966 df-sdom 8967 df-sup 9466 df-inf 9467 df-pnf 11281 df-mnf 11282 df-xr 11283 df-ltxr 11284 df-le 11285 df-sub 11477 df-neg 11478 df-div 11903 df-nn 12244 df-n0 12504 df-z 12590 df-uz 12854 df-q 12964 df-ioo 13361 df-ioc 13362 df-rest 17404 df-topgen 17425 df-top 22809 df-bases 22862

This theorem is referenced by: fouriersw 45619

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