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 13213 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → ((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) = (𝐴[,]𝐵)) | |
2 | 1 | eqcomd 2744 | . . . . 5 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → (𝐴[,]𝐵) = ((𝐴(,)𝐵) ∪ {𝐴, 𝐵})) |
3 | 2 | difeq1d 4056 | . . . 4 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) ∖ {𝐴, 𝐵})) |
4 | difun2 4414 | . . . . 5 ⊢ (((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) ∖ {𝐴, 𝐵}) = ((𝐴(,)𝐵) ∖ {𝐴, 𝐵}) | |
5 | iooinlbub 43039 | . . . . . 6 ⊢ ((𝐴(,)𝐵) ∩ {𝐴, 𝐵}) = ∅ | |
6 | disj3 4387 | . . . . . 6 ⊢ (((𝐴(,)𝐵) ∩ {𝐴, 𝐵}) = ∅ ↔ (𝐴(,)𝐵) = ((𝐴(,)𝐵) ∖ {𝐴, 𝐵})) | |
7 | 5, 6 | mpbi 229 | . . . . 5 ⊢ (𝐴(,)𝐵) = ((𝐴(,)𝐵) ∖ {𝐴, 𝐵}) |
8 | 4, 7 | eqtr4i 2769 | . . . 4 ⊢ (((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵) |
9 | 3, 8 | eqtrdi 2794 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
10 | 9 | 3expa 1117 | . 2 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
11 | difssd 4067 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) ⊆ (𝐴[,]𝐵)) | |
12 | simpr 485 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ¬ 𝐴 ≤ 𝐵) | |
13 | xrlenlt 11040 | . . . . . . . . 9 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) | |
14 | 13 | adantr 481 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
15 | 12, 14 | mtbid 324 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ¬ ¬ 𝐵 < 𝐴) |
16 | 15 | notnotrd 133 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐵 < 𝐴) |
17 | icc0 13127 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → ((𝐴[,]𝐵) = ∅ ↔ 𝐵 < 𝐴)) | |
18 | 17 | adantr 481 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) = ∅ ↔ 𝐵 < 𝐴)) |
19 | 16, 18 | mpbird 256 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → (𝐴[,]𝐵) = ∅) |
20 | 11, 19 | sseqtrd 3961 | . . . 4 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) ⊆ ∅) |
21 | ss0 4332 | . . . 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 766 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐵 ∈ ℝ*) | |
24 | simpll 764 | . . . . 5 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐴 ∈ ℝ*) | |
25 | 23, 24, 16 | xrltled 12884 | . . . 4 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → 𝐵 ≤ 𝐴) |
26 | ioo0 13104 | . . . . 5 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → ((𝐴(,)𝐵) = ∅ ↔ 𝐵 ≤ 𝐴)) | |
27 | 26 | adantr 481 | . . . 4 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴(,)𝐵) = ∅ ↔ 𝐵 ≤ 𝐴)) |
28 | 25, 27 | mpbird 256 | . . 3 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → (𝐴(,)𝐵) = ∅) |
29 | 22, 28 | eqtr4d 2781 | . 2 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ ¬ 𝐴 ≤ 𝐵) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
30 | 10, 29 | pm2.61dan 810 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → ((𝐴[,]𝐵) ∖ {𝐴, 𝐵}) = (𝐴(,)𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ∖ cdif 3884 ∪ cun 3885 ∩ cin 3886 ⊆ wss 3887 ∅c0 4256 {cpr 4563 class class class wbr 5074 (class class class)co 7275 ℝ*cxr 11008 < clt 11009 ≤ cle 11010 (,)cioo 13079 [,]cicc 13082 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-sup 9201 df-inf 9202 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-n0 12234 df-z 12320 df-uz 12583 df-q 12689 df-ioo 13083 df-ico 13085 df-icc 13086 |
This theorem is referenced by: (None) |
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