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Mirrors > Home > MPE Home > Th. List > elfz5 | Structured version Visualization version GIF version |
Description: Membership in a finite set of sequential integers. (Contributed by NM, 26-Dec-2005.) |
Ref | Expression |
---|---|
elfz5 | ⊢ ((𝐾 ∈ (ℤ≥‘𝑀) ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ 𝐾 ≤ 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluzelz 12913 | . . . 4 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → 𝐾 ∈ ℤ) | |
2 | eluzel2 12908 | . . . 4 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
3 | 1, 2 | jca 511 | . . 3 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → (𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ)) |
4 | elfz 13573 | . . . 4 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) | |
5 | 4 | 3expa 1118 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
6 | 3, 5 | sylan 579 | . 2 ⊢ ((𝐾 ∈ (ℤ≥‘𝑀) ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
7 | eluzle 12916 | . . . 4 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → 𝑀 ≤ 𝐾) | |
8 | 7 | biantrurd 532 | . . 3 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → (𝐾 ≤ 𝑁 ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
9 | 8 | adantr 480 | . 2 ⊢ ((𝐾 ∈ (ℤ≥‘𝑀) ∧ 𝑁 ∈ ℤ) → (𝐾 ≤ 𝑁 ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
10 | 6, 9 | bitr4d 282 | 1 ⊢ ((𝐾 ∈ (ℤ≥‘𝑀) ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ 𝐾 ≤ 𝑁)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2108 class class class wbr 5166 ‘cfv 6573 (class class class)co 7448 ≤ cle 11325 ℤcz 12639 ℤ≥cuz 12903 ...cfz 13567 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pr 5447 ax-cnex 11240 ax-resscn 11241 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-sbc 3805 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-fv 6581 df-ov 7451 df-oprab 7452 df-mpo 7453 df-neg 11523 df-z 12640 df-uz 12904 df-fz 13568 |
This theorem is referenced by: fzsplit2 13609 fznn0sub2 13692 predfz 13710 bcval5 14367 hashf1 14506 seqcoll 14513 limsupgre 15527 isercolllem2 15714 isercoll 15716 fsumcvg3 15777 fsum0diaglem 15824 climcndslem2 15898 mertenslem1 15932 ncoprmlnprm 16775 pcfac 16946 prmreclem2 16964 prmreclem3 16965 prmreclem5 16967 1arith 16974 vdwlem1 17028 vdwlem3 17030 vdwlem10 17037 sylow1lem1 19640 psrbaglefi 21969 ovoliunlem1 25556 ovolicc2lem4 25574 uniioombllem3 25639 mbfi1fseqlem3 25772 plyeq0lem 26269 coeeulem 26283 coeidlem 26296 coeid3 26299 coeeq2 26301 coemulhi 26313 vieta1lem2 26371 birthdaylem2 27013 birthdaylem3 27014 ftalem5 27138 basellem2 27143 basellem3 27144 basellem5 27146 musum 27252 fsumvma2 27276 chpchtsum 27281 lgsne0 27397 lgsquadlem2 27443 rplogsumlem2 27547 dchrisumlem1 27551 dchrisum0lem1 27578 ostth2lem3 27697 eupth2lems 30270 fzsplit3 32799 eulerpartlems 34325 eulerpartlemb 34333 erdszelem7 35165 cvmliftlem7 35259 |
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