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Mirrors > Home > MPE Home > Th. List > elfzp1b | Structured version Visualization version GIF version |
Description: An integer is a member of a 0-based finite set of sequential integers iff its successor is a member of the corresponding 1-based set. (Contributed by Paul Chapman, 22-Jun-2011.) |
Ref | Expression |
---|---|
elfzp1b | ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (0...(𝑁 − 1)) ↔ (𝐾 + 1) ∈ (1...𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | peano2z 12604 | . . . 4 ⊢ (𝐾 ∈ ℤ → (𝐾 + 1) ∈ ℤ) | |
2 | 1z 12593 | . . . . 5 ⊢ 1 ∈ ℤ | |
3 | fzsubel 13540 | . . . . . 6 ⊢ (((1 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ ((𝐾 + 1) ∈ ℤ ∧ 1 ∈ ℤ)) → ((𝐾 + 1) ∈ (1...𝑁) ↔ ((𝐾 + 1) − 1) ∈ ((1 − 1)...(𝑁 − 1)))) | |
4 | 2, 3 | mpanl1 697 | . . . . 5 ⊢ ((𝑁 ∈ ℤ ∧ ((𝐾 + 1) ∈ ℤ ∧ 1 ∈ ℤ)) → ((𝐾 + 1) ∈ (1...𝑁) ↔ ((𝐾 + 1) − 1) ∈ ((1 − 1)...(𝑁 − 1)))) |
5 | 2, 4 | mpanr2 701 | . . . 4 ⊢ ((𝑁 ∈ ℤ ∧ (𝐾 + 1) ∈ ℤ) → ((𝐾 + 1) ∈ (1...𝑁) ↔ ((𝐾 + 1) − 1) ∈ ((1 − 1)...(𝑁 − 1)))) |
6 | 1, 5 | sylan2 592 | . . 3 ⊢ ((𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → ((𝐾 + 1) ∈ (1...𝑁) ↔ ((𝐾 + 1) − 1) ∈ ((1 − 1)...(𝑁 − 1)))) |
7 | 6 | ancoms 458 | . 2 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 + 1) ∈ (1...𝑁) ↔ ((𝐾 + 1) − 1) ∈ ((1 − 1)...(𝑁 − 1)))) |
8 | zcn 12564 | . . . . 5 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℂ) | |
9 | ax-1cn 11167 | . . . . 5 ⊢ 1 ∈ ℂ | |
10 | pncan 11467 | . . . . 5 ⊢ ((𝐾 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝐾 + 1) − 1) = 𝐾) | |
11 | 8, 9, 10 | sylancl 585 | . . . 4 ⊢ (𝐾 ∈ ℤ → ((𝐾 + 1) − 1) = 𝐾) |
12 | 1m1e0 12285 | . . . . . 6 ⊢ (1 − 1) = 0 | |
13 | 12 | oveq1i 7414 | . . . . 5 ⊢ ((1 − 1)...(𝑁 − 1)) = (0...(𝑁 − 1)) |
14 | 13 | a1i 11 | . . . 4 ⊢ (𝐾 ∈ ℤ → ((1 − 1)...(𝑁 − 1)) = (0...(𝑁 − 1))) |
15 | 11, 14 | eleq12d 2821 | . . 3 ⊢ (𝐾 ∈ ℤ → (((𝐾 + 1) − 1) ∈ ((1 − 1)...(𝑁 − 1)) ↔ 𝐾 ∈ (0...(𝑁 − 1)))) |
16 | 15 | adantr 480 | . 2 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (((𝐾 + 1) − 1) ∈ ((1 − 1)...(𝑁 − 1)) ↔ 𝐾 ∈ (0...(𝑁 − 1)))) |
17 | 7, 16 | bitr2d 280 | 1 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (0...(𝑁 − 1)) ↔ (𝐾 + 1) ∈ (1...𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1533 ∈ wcel 2098 (class class class)co 7404 ℂcc 11107 0cc0 11109 1c1 11110 + caddc 11112 − cmin 11445 ℤcz 12559 ...cfz 13487 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7852 df-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-nn 12214 df-n0 12474 df-z 12560 df-fz 13488 |
This theorem is referenced by: numclwlk2lem2f 30134 |
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