icossico2d - Metamath Proof Explorer

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Theorem icossico2d 13369

Description: Condition for a closed-below, open-above interval to be a subset of a closed-below, open-above interval. (Contributed by Glauco Siliprandi, 2-Jan-2022.)

**Hypotheses**
Ref	Expression
icossico2d.1	⊢ (𝜑 → 𝐵 ∈ ℝ^*)
icossico2d.2	⊢ (𝜑 → 𝐶 ∈ ℝ^*)
icossico2d.3	⊢ (𝜑 → 𝐵 ≤ 𝐴)

**Assertion**
Ref	Expression
icossico2d	⊢ (𝜑 → (𝐴[,)𝐶) ⊆ (𝐵[,)𝐶))

**Proof of Theorem icossico2d**
Step	Hyp	Ref	Expression
1		icossico2d.1	. 2 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
2		icossico2d.2	. 2 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
3		icossico2d.3	. 2 ⊢ (𝜑 → 𝐵 ≤ 𝐴)
4	2	xrleidd 13098	. 2 ⊢ (𝜑 → 𝐶 ≤ 𝐶)
5		icossico 13364	. 2 ⊢ (((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^*) ∧ (𝐵 ≤ 𝐴 ∧ 𝐶 ≤ 𝐶)) → (𝐴[,)𝐶) ⊆ (𝐵[,)𝐶))
6	1, 2, 3, 4, 5	syl22anc 845	1 ⊢ (𝜑 → (𝐴[,)𝐶) ⊆ (𝐵[,)𝐶))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∈ wcel 2121 ⊆ wss 3885 class class class wbr 5075 (class class class)co 7360 ℝ^*cxr 11173 ≤ cle 11175 [,)cico 13295

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-resscn 11090 ax-pre-lttri 11107 ax-pre-lttrn 11108

This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-id 5516 df-po 5529 df-so 5530 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-ov 7363 df-oprab 7364 df-mpo 7365 df-1st 7935 df-2nd 7936 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-ico 13299

This theorem is referenced by: liminflelimsuplem 46232 rehalfge1 47816

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