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Mirrors > Home > MPE Home > Th. List > elfzm1b | Structured version Visualization version GIF version |
Description: An integer is a member of a 1-based finite set of sequential integers iff its predecessor is a member of the corresponding 0-based set. (Contributed by Paul Chapman, 22-Jun-2011.) |
Ref | Expression |
---|---|
elfzm1b | ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (1...𝑁) ↔ (𝐾 − 1) ∈ (0...(𝑁 − 1)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1z 11284 | . . . 4 ⊢ 1 ∈ ℤ | |
2 | fzsubel 12248 | . . . . 5 ⊢ (((1 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∈ ℤ ∧ 1 ∈ ℤ)) → (𝐾 ∈ (1...𝑁) ↔ (𝐾 − 1) ∈ ((1 − 1)...(𝑁 − 1)))) | |
3 | 1, 2 | mpanl1 712 | . . . 4 ⊢ ((𝑁 ∈ ℤ ∧ (𝐾 ∈ ℤ ∧ 1 ∈ ℤ)) → (𝐾 ∈ (1...𝑁) ↔ (𝐾 − 1) ∈ ((1 − 1)...(𝑁 − 1)))) |
4 | 1, 3 | mpanr2 716 | . . 3 ⊢ ((𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝐾 ∈ (1...𝑁) ↔ (𝐾 − 1) ∈ ((1 − 1)...(𝑁 − 1)))) |
5 | 1m1e0 10966 | . . . . 5 ⊢ (1 − 1) = 0 | |
6 | 5 | oveq1i 6559 | . . . 4 ⊢ ((1 − 1)...(𝑁 − 1)) = (0...(𝑁 − 1)) |
7 | 6 | eleq2i 2680 | . . 3 ⊢ ((𝐾 − 1) ∈ ((1 − 1)...(𝑁 − 1)) ↔ (𝐾 − 1) ∈ (0...(𝑁 − 1))) |
8 | 4, 7 | syl6bb 275 | . 2 ⊢ ((𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝐾 ∈ (1...𝑁) ↔ (𝐾 − 1) ∈ (0...(𝑁 − 1)))) |
9 | 8 | ancoms 468 | 1 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (1...𝑁) ↔ (𝐾 − 1) ∈ (0...(𝑁 − 1)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 ∈ wcel 1977 (class class class)co 6549 0cc0 9815 1c1 9816 − cmin 10145 ℤcz 11254 ...cfz 12197 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-nn 10898 df-n0 11170 df-z 11255 df-fz 12198 |
This theorem is referenced by: elfzom1b 12433 bcpasc 12970 cayhamlem1 20490 cpmadugsumlemF 20500 cvmliftlem7 30527 poimirlem1 32580 poimirlem2 32581 poimirlem11 32590 poimirlem14 32593 poimirlem31 32610 iccpartipre 39959 |
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