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Mirrors > Home > MPE Home > Th. List > elfzo0l | Structured version Visualization version GIF version |
Description: A member of a half-open range of nonnegative integers is either 0 or a member of the corresponding half-open range of positive integers. (Contributed by AV, 5-Feb-2021.) |
Ref | Expression |
---|---|
elfzo0l | ⊢ (𝐾 ∈ (0..^𝑁) → (𝐾 = 0 ∨ 𝐾 ∈ (1..^𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfzo0 12548 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) ↔ (𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ ∧ 𝐾 < 𝑁)) | |
2 | 1 | simp2bi 1097 | . 2 ⊢ (𝐾 ∈ (0..^𝑁) → 𝑁 ∈ ℕ) |
3 | fzo0sn0fzo1 12597 | . . . 4 ⊢ (𝑁 ∈ ℕ → (0..^𝑁) = ({0} ∪ (1..^𝑁))) | |
4 | 3 | eleq2d 2716 | . . 3 ⊢ (𝑁 ∈ ℕ → (𝐾 ∈ (0..^𝑁) ↔ 𝐾 ∈ ({0} ∪ (1..^𝑁)))) |
5 | elun 3786 | . . . 4 ⊢ (𝐾 ∈ ({0} ∪ (1..^𝑁)) ↔ (𝐾 ∈ {0} ∨ 𝐾 ∈ (1..^𝑁))) | |
6 | elsni 4227 | . . . . 5 ⊢ (𝐾 ∈ {0} → 𝐾 = 0) | |
7 | 6 | orim1i 538 | . . . 4 ⊢ ((𝐾 ∈ {0} ∨ 𝐾 ∈ (1..^𝑁)) → (𝐾 = 0 ∨ 𝐾 ∈ (1..^𝑁))) |
8 | 5, 7 | sylbi 207 | . . 3 ⊢ (𝐾 ∈ ({0} ∪ (1..^𝑁)) → (𝐾 = 0 ∨ 𝐾 ∈ (1..^𝑁))) |
9 | 4, 8 | syl6bi 243 | . 2 ⊢ (𝑁 ∈ ℕ → (𝐾 ∈ (0..^𝑁) → (𝐾 = 0 ∨ 𝐾 ∈ (1..^𝑁)))) |
10 | 2, 9 | mpcom 38 | 1 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐾 = 0 ∨ 𝐾 ∈ (1..^𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∨ wo 382 = wceq 1523 ∈ wcel 2030 ∪ cun 3605 {csn 4210 class class class wbr 4685 (class class class)co 6690 0cc0 9974 1c1 9975 < clt 10112 ℕcn 11058 ℕ0cn0 11330 ..^cfzo 12504 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1762 ax-4 1777 ax-5 1879 ax-6 1945 ax-7 1981 ax-8 2032 ax-9 2039 ax-10 2059 ax-11 2074 ax-12 2087 ax-13 2282 ax-ext 2631 ax-sep 4814 ax-nul 4822 ax-pow 4873 ax-pr 4936 ax-un 6991 ax-cnex 10030 ax-resscn 10031 ax-1cn 10032 ax-icn 10033 ax-addcl 10034 ax-addrcl 10035 ax-mulcl 10036 ax-mulrcl 10037 ax-mulcom 10038 ax-addass 10039 ax-mulass 10040 ax-distr 10041 ax-i2m1 10042 ax-1ne0 10043 ax-1rid 10044 ax-rnegex 10045 ax-rrecex 10046 ax-cnre 10047 ax-pre-lttri 10048 ax-pre-lttrn 10049 ax-pre-ltadd 10050 ax-pre-mulgt0 10051 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3or 1055 df-3an 1056 df-tru 1526 df-ex 1745 df-nf 1750 df-sb 1938 df-eu 2502 df-mo 2503 df-clab 2638 df-cleq 2644 df-clel 2647 df-nfc 2782 df-ne 2824 df-nel 2927 df-ral 2946 df-rex 2947 df-reu 2948 df-rab 2950 df-v 3233 df-sbc 3469 df-csb 3567 df-dif 3610 df-un 3612 df-in 3614 df-ss 3621 df-pss 3623 df-nul 3949 df-if 4120 df-pw 4193 df-sn 4211 df-pr 4213 df-tp 4215 df-op 4217 df-uni 4469 df-iun 4554 df-br 4686 df-opab 4746 df-mpt 4763 df-tr 4786 df-id 5053 df-eprel 5058 df-po 5064 df-so 5065 df-fr 5102 df-we 5104 df-xp 5149 df-rel 5150 df-cnv 5151 df-co 5152 df-dm 5153 df-rn 5154 df-res 5155 df-ima 5156 df-pred 5718 df-ord 5764 df-on 5765 df-lim 5766 df-suc 5767 df-iota 5889 df-fun 5928 df-fn 5929 df-f 5930 df-f1 5931 df-fo 5932 df-f1o 5933 df-fv 5934 df-riota 6651 df-ov 6693 df-oprab 6694 df-mpt2 6695 df-om 7108 df-1st 7210 df-2nd 7211 df-wrecs 7452 df-recs 7513 df-rdg 7551 df-er 7787 df-en 7998 df-dom 7999 df-sdom 8000 df-pnf 10114 df-mnf 10115 df-xr 10116 df-ltxr 10117 df-le 10118 df-sub 10306 df-neg 10307 df-nn 11059 df-n0 11331 df-z 11416 df-uz 11726 df-fz 12365 df-fzo 12505 |
This theorem is referenced by: pthdadjvtx 26682 |
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