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Mirrors > Home > MPE Home > Th. List > fznatpl1 | Structured version Visualization version GIF version |
Description: Shift membership in a finite sequence of naturals. (Contributed by Scott Fenton, 17-Jul-2013.) |
Ref | Expression |
---|---|
fznatpl1 | ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (𝐼 + 1) ∈ (1...𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1red 9934 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 1 ∈ ℝ) | |
2 | elfzelz 12213 | . . . . . 6 ⊢ (𝐼 ∈ (1...(𝑁 − 1)) → 𝐼 ∈ ℤ) | |
3 | 2 | zred 11358 | . . . . 5 ⊢ (𝐼 ∈ (1...(𝑁 − 1)) → 𝐼 ∈ ℝ) |
4 | 3 | adantl 481 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 𝐼 ∈ ℝ) |
5 | peano2re 10088 | . . . 4 ⊢ (𝐼 ∈ ℝ → (𝐼 + 1) ∈ ℝ) | |
6 | 4, 5 | syl 17 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (𝐼 + 1) ∈ ℝ) |
7 | peano2re 10088 | . . . . 5 ⊢ (1 ∈ ℝ → (1 + 1) ∈ ℝ) | |
8 | 1, 7 | syl 17 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (1 + 1) ∈ ℝ) |
9 | 1 | ltp1d 10833 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 1 < (1 + 1)) |
10 | elfzle1 12215 | . . . . . 6 ⊢ (𝐼 ∈ (1...(𝑁 − 1)) → 1 ≤ 𝐼) | |
11 | 10 | adantl 481 | . . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 1 ≤ 𝐼) |
12 | 1re 9918 | . . . . . . 7 ⊢ 1 ∈ ℝ | |
13 | leadd1 10375 | . . . . . . 7 ⊢ ((1 ∈ ℝ ∧ 𝐼 ∈ ℝ ∧ 1 ∈ ℝ) → (1 ≤ 𝐼 ↔ (1 + 1) ≤ (𝐼 + 1))) | |
14 | 12, 12, 13 | mp3an13 1407 | . . . . . 6 ⊢ (𝐼 ∈ ℝ → (1 ≤ 𝐼 ↔ (1 + 1) ≤ (𝐼 + 1))) |
15 | 4, 14 | syl 17 | . . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (1 ≤ 𝐼 ↔ (1 + 1) ≤ (𝐼 + 1))) |
16 | 11, 15 | mpbid 221 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (1 + 1) ≤ (𝐼 + 1)) |
17 | 1, 8, 6, 9, 16 | ltletrd 10076 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 1 < (𝐼 + 1)) |
18 | 1, 6, 17 | ltled 10064 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 1 ≤ (𝐼 + 1)) |
19 | elfzle2 12216 | . . . 4 ⊢ (𝐼 ∈ (1...(𝑁 − 1)) → 𝐼 ≤ (𝑁 − 1)) | |
20 | 19 | adantl 481 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 𝐼 ≤ (𝑁 − 1)) |
21 | nnz 11276 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
22 | 21 | adantr 480 | . . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 𝑁 ∈ ℤ) |
23 | 22 | zred 11358 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → 𝑁 ∈ ℝ) |
24 | leaddsub 10383 | . . . . 5 ⊢ ((𝐼 ∈ ℝ ∧ 1 ∈ ℝ ∧ 𝑁 ∈ ℝ) → ((𝐼 + 1) ≤ 𝑁 ↔ 𝐼 ≤ (𝑁 − 1))) | |
25 | 12, 24 | mp3an2 1404 | . . . 4 ⊢ ((𝐼 ∈ ℝ ∧ 𝑁 ∈ ℝ) → ((𝐼 + 1) ≤ 𝑁 ↔ 𝐼 ≤ (𝑁 − 1))) |
26 | 4, 23, 25 | syl2anc 691 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → ((𝐼 + 1) ≤ 𝑁 ↔ 𝐼 ≤ (𝑁 − 1))) |
27 | 20, 26 | mpbird 246 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (𝐼 + 1) ≤ 𝑁) |
28 | 2 | peano2zd 11361 | . . . 4 ⊢ (𝐼 ∈ (1...(𝑁 − 1)) → (𝐼 + 1) ∈ ℤ) |
29 | 28 | adantl 481 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (𝐼 + 1) ∈ ℤ) |
30 | 1z 11284 | . . . 4 ⊢ 1 ∈ ℤ | |
31 | elfz 12203 | . . . 4 ⊢ (((𝐼 + 1) ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐼 + 1) ∈ (1...𝑁) ↔ (1 ≤ (𝐼 + 1) ∧ (𝐼 + 1) ≤ 𝑁))) | |
32 | 30, 31 | mp3an2 1404 | . . 3 ⊢ (((𝐼 + 1) ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐼 + 1) ∈ (1...𝑁) ↔ (1 ≤ (𝐼 + 1) ∧ (𝐼 + 1) ≤ 𝑁))) |
33 | 29, 22, 32 | syl2anc 691 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → ((𝐼 + 1) ∈ (1...𝑁) ↔ (1 ≤ (𝐼 + 1) ∧ (𝐼 + 1) ≤ 𝑁))) |
34 | 18, 27, 33 | mpbir2and 959 | 1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ (1...(𝑁 − 1))) → (𝐼 + 1) ∈ (1...𝑁)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 ∈ wcel 1977 class class class wbr 4583 (class class class)co 6549 ℝcr 9814 1c1 9816 + caddc 9818 ≤ cle 9954 − cmin 10145 ℕcn 10897 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-1st 7059 df-2nd 7060 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-uz 11564 df-fz 12198 |
This theorem is referenced by: axlowdimlem10 25631 axlowdimlem14 25635 1smat1 29198 madjusmdetlem2 29222 |
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