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Mirrors > Home > MPE Home > Th. List > fzdisj | Structured version Visualization version GIF version |
Description: Condition for two finite intervals of integers to be disjoint. (Contributed by Jeff Madsen, 17-Jun-2010.) |
Ref | Expression |
---|---|
fzdisj | ⊢ (𝐾 < 𝑀 → ((𝐽...𝐾) ∩ (𝑀...𝑁)) = ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elin 3899 | . . . 4 ⊢ (𝑥 ∈ ((𝐽...𝐾) ∩ (𝑀...𝑁)) ↔ (𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁))) | |
2 | elfzel1 13184 | . . . . . . 7 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑀 ∈ ℤ) | |
3 | 2 | adantl 481 | . . . . . 6 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑀 ∈ ℤ) |
4 | 3 | zred 12355 | . . . . 5 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑀 ∈ ℝ) |
5 | elfzel2 13183 | . . . . . . 7 ⊢ (𝑥 ∈ (𝐽...𝐾) → 𝐾 ∈ ℤ) | |
6 | 5 | adantr 480 | . . . . . 6 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝐾 ∈ ℤ) |
7 | 6 | zred 12355 | . . . . 5 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝐾 ∈ ℝ) |
8 | elfzelz 13185 | . . . . . . . 8 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ∈ ℤ) | |
9 | 8 | zred 12355 | . . . . . . 7 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ∈ ℝ) |
10 | 9 | adantl 481 | . . . . . 6 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑥 ∈ ℝ) |
11 | elfzle1 13188 | . . . . . . 7 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑀 ≤ 𝑥) | |
12 | 11 | adantl 481 | . . . . . 6 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑀 ≤ 𝑥) |
13 | elfzle2 13189 | . . . . . . 7 ⊢ (𝑥 ∈ (𝐽...𝐾) → 𝑥 ≤ 𝐾) | |
14 | 13 | adantr 480 | . . . . . 6 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑥 ≤ 𝐾) |
15 | 4, 10, 7, 12, 14 | letrd 11062 | . . . . 5 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑀 ≤ 𝐾) |
16 | 4, 7, 15 | lensymd 11056 | . . . 4 ⊢ ((𝑥 ∈ (𝐽...𝐾) ∧ 𝑥 ∈ (𝑀...𝑁)) → ¬ 𝐾 < 𝑀) |
17 | 1, 16 | sylbi 216 | . . 3 ⊢ (𝑥 ∈ ((𝐽...𝐾) ∩ (𝑀...𝑁)) → ¬ 𝐾 < 𝑀) |
18 | 17 | con2i 139 | . 2 ⊢ (𝐾 < 𝑀 → ¬ 𝑥 ∈ ((𝐽...𝐾) ∩ (𝑀...𝑁))) |
19 | 18 | eq0rdv 4335 | 1 ⊢ (𝐾 < 𝑀 → ((𝐽...𝐾) ∩ (𝑀...𝑁)) = ∅) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∩ cin 3882 ∅c0 4253 class class class wbr 5070 (class class class)co 7255 ℝcr 10801 < clt 10940 ≤ cle 10941 ℤcz 12249 ...cfz 13168 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-pre-lttri 10876 ax-pre-lttrn 10877 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-oprab 7259 df-mpo 7260 df-1st 7804 df-2nd 7805 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-neg 11138 df-z 12250 df-uz 12512 df-fz 13169 |
This theorem is referenced by: fsumm1 15391 fsum1p 15393 o1fsum 15453 climcndslem1 15489 climcndslem2 15490 mertenslem1 15524 fprod1p 15606 fprodeq0 15613 fallfacval4 15681 prmreclem5 16549 strleun 16786 uniioombllem3 24654 mtest 25468 birthdaylem2 26007 fsumharmonic 26066 ftalem5 26131 chtdif 26212 ppidif 26217 gausslemma2dlem4 26422 gausslemma2dlem6 26425 lgsquadlem2 26434 dchrisum0lem1b 26568 dchrisum0lem3 26572 pntrsumbnd2 26620 pntrlog2bndlem6 26636 pntpbnd2 26640 pntlemf 26658 axlowdimlem2 27214 axlowdimlem16 27228 esumpmono 31947 ballotlemfrceq 32395 fsum2dsub 32487 poimirlem1 35705 poimirlem2 35706 poimirlem3 35707 poimirlem4 35708 poimirlem6 35710 poimirlem7 35711 poimirlem11 35715 poimirlem12 35716 poimirlem16 35720 poimirlem17 35721 poimirlem19 35723 poimirlem20 35724 poimirlem23 35727 poimirlem24 35728 poimirlem25 35729 poimirlem28 35732 poimirlem29 35733 poimirlem31 35735 sticksstones6 40035 sticksstones7 40036 metakunt18 40070 metakunt20 40072 prodsplit 40089 eldioph2lem1 40498 stoweidlem11 43442 |
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