eliccelicod - Mathbox for Glauco Siliprandi

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Theorem eliccelicod 45718

Description: A member of a closed interval that is not the upper bound, is a member of the left-closed, right-open interval. (Contributed by Glauco Siliprandi, 17-Aug-2020.)

**Hypotheses**
Ref	Expression
eliccelicod.a	⊢ (𝜑 → 𝐴 ∈ ℝ^*)
eliccelicod.b	⊢ (𝜑 → 𝐵 ∈ ℝ^*)
eliccelicod.c	⊢ (𝜑 → 𝐶 ∈ (𝐴[,]𝐵))
eliccelicod.d	⊢ (𝜑 → 𝐶 ≠ 𝐵)

**Assertion**
Ref	Expression
eliccelicod	⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵))

**Proof of Theorem eliccelicod**
Step	Hyp	Ref	Expression
1		eliccelicod.a	. 2 ⊢ (𝜑 → 𝐴 ∈ ℝ^*)
2		eliccelicod.b	. 2 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
3		eliccelicod.c	. . 3 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,]𝐵))
4		eliccxr 13349	. . 3 ⊢ (𝐶 ∈ (𝐴[,]𝐵) → 𝐶 ∈ ℝ^*)
5	3, 4	syl 17	. 2 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
6		iccgelb 13316	. . 3 ⊢ ((𝐴 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝐶 ∈ (𝐴[,]𝐵)) → 𝐴 ≤ 𝐶)
7	1, 2, 3, 6	syl3anc 1373	. 2 ⊢ (𝜑 → 𝐴 ≤ 𝐶)
8		iccleub 13315	. . . 4 ⊢ ((𝐴 ∈ ℝ^* ∧ 𝐵 ∈ ℝ^* ∧ 𝐶 ∈ (𝐴[,]𝐵)) → 𝐶 ≤ 𝐵)
9	1, 2, 3, 8	syl3anc 1373	. . 3 ⊢ (𝜑 → 𝐶 ≤ 𝐵)
10		eliccelicod.d	. . 3 ⊢ (𝜑 → 𝐶 ≠ 𝐵)
11	5, 2, 9, 10	xrleneltd 45510	. 2 ⊢ (𝜑 → 𝐶 < 𝐵)
12	1, 2, 5, 7, 11	elicod 13309	1 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∈ wcel 2113 ≠ wne 2930 class class class wbr 5096 (class class class)co 7356 ℝ^*cxr 11163 ≤ cle 11165 [,)cico 13261 [,]cicc 13262

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 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-cnex 11080 ax-resscn 11081 ax-pre-lttri 11098 ax-pre-lttrn 11099

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 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-id 5517 df-po 5530 df-so 5531 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-ov 7359 df-oprab 7360 df-mpo 7361 df-1st 7931 df-2nd 7932 df-er 8633 df-en 8882 df-dom 8883 df-sdom 8884 df-pnf 11166 df-mnf 11167 df-xr 11168 df-ltxr 11169 df-le 11170 df-ico 13265 df-icc 13266

This theorem is referenced by: carageniuncl 46709

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