Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > iccdifprioo | Structured version Visualization version GIF version |
Description: An open interval is the closed interval without the bounds. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
iccdifprioo | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prunioo 12172 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → ((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) = (𝐴[,]𝐵)) | |
2 | 1 | eqcomd 2616 | . . . . 5 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → (𝐴[,]𝐵) = ((𝐴(,)𝐵) ∪ {𝐴, 𝐵})) |
3 | 2 | difeq1d 3689 | . . . 4 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) ∖ {𝐴, 𝐵})) |
4 | difun2 4000 | . . . . 5 ⊢ (((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) ∖ {𝐴, 𝐵}) = ((𝐴(,)𝐵) ∖ {𝐴, 𝐵}) | |
5 | iooinlbub 38570 | . . . . . 6 ⊢ ((𝐴(,)𝐵) ∩ {𝐴, 𝐵}) = ∅ | |
6 | disj3 3973 | . . . . . 6 ⊢ (((𝐴(,)𝐵) ∩ {𝐴, 𝐵}) = ∅ ↔ (𝐴(,)𝐵) = ((𝐴(,)𝐵) ∖ {𝐴, 𝐵})) | |
7 | 5, 6 | mpbi 219 | . . . . 5 ⊢ (𝐴(,)𝐵) = ((𝐴(,)𝐵) ∖ {𝐴, 𝐵}) |
8 | 4, 7 | eqtr4i 2635 | . . . 4 ⊢ (((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵) |
9 | 3, 8 | syl6eq 2660 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
10 | 9 | 3expa 1257 | . 2 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
11 | difssd 3700 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) ⊆ (𝐴[,]𝐵)) | |
12 | simpr 476 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ¬ 𝐴 ≤ 𝐵) | |
13 | xrlenlt 9982 | . . . . . . . . 9 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) | |
14 | 13 | adantr 480 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
15 | 12, 14 | mtbid 313 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ¬ ¬ 𝐵 < 𝐴) |
16 | 15 | notnotrd 127 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐵 < 𝐴) |
17 | icc0 12094 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → ((𝐴[,]𝐵) = ∅ ↔ 𝐵 < 𝐴)) | |
18 | 17 | adantr 480 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) = ∅ ↔ 𝐵 < 𝐴)) |
19 | 16, 18 | mpbird 246 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → (𝐴[,]𝐵) = ∅) |
20 | 11, 19 | sseqtrd 3604 | . . . 4 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) ⊆ ∅) |
21 | ss0 3926 | . . . 4 ⊢ (((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) ⊆ ∅ → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = ∅) | |
22 | 20, 21 | syl 17 | . . 3 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = ∅) |
23 | simplr 788 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐵 ∈ ℝ*) | |
24 | simpll 786 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐴 ∈ ℝ*) | |
25 | 23, 24, 16 | xrltled 38427 | . . . 4 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐵 ≤ 𝐴) |
26 | ioo0 12071 | . . . . 5 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → ((𝐴(,)𝐵) = ∅ ↔ 𝐵 ≤ 𝐴)) | |
27 | 26 | adantr 480 | . . . 4 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴(,)𝐵) = ∅ ↔ 𝐵 ≤ 𝐴)) |
28 | 25, 27 | mpbird 246 | . . 3 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → (𝐴(,)𝐵) = ∅) |
29 | 22, 28 | eqtr4d 2647 | . 2 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
30 | 10, 29 | pm2.61dan 828 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 195 ∧ wa 383 ∧ w3a 1031 = wceq 1475 ∈ wcel 1977 ∖ cdif 3537 ∪ cun 3538 ∩ cin 3539 ⊆ wss 3540 ∅c0 3874 {cpr 4127 class class class wbr 4583 (class class class)co 6549 ℝ*cxr 9952 < clt 9953 ≤ cle 9954 (,)cioo 12046 [,]cicc 12049 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-sup 8231 df-inf 8232 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-n0 11170 df-z 11255 df-uz 11564 df-q 11665 df-ioo 12050 df-ico 12052 df-icc 12053 |
This theorem is referenced by: (None) |
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