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Mirrors > Home > MPE Home > Th. List > fzctr | Structured version Visualization version GIF version |
Description: Lemma for theorems about the central binomial coefficient. (Contributed by Mario Carneiro, 8-Mar-2014.) (Revised by Mario Carneiro, 2-Aug-2014.) |
Ref | Expression |
---|---|
fzctr | ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ (0...(2 · 𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0ge0 11669 | . 2 ⊢ (𝑁 ∈ ℕ0 → 0 ≤ 𝑁) | |
2 | nn0re 11652 | . . . 4 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℝ) | |
3 | nn0addge1 11690 | . . . 4 ⊢ ((𝑁 ∈ ℝ ∧ 𝑁 ∈ ℕ0) → 𝑁 ≤ (𝑁 + 𝑁)) | |
4 | 2, 3 | mpancom 678 | . . 3 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ≤ (𝑁 + 𝑁)) |
5 | nn0cn 11653 | . . . 4 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℂ) | |
6 | 5 | 2timesd 11625 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (2 · 𝑁) = (𝑁 + 𝑁)) |
7 | 4, 6 | breqtrrd 4914 | . 2 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ≤ (2 · 𝑁)) |
8 | nn0z 11752 | . . 3 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℤ) | |
9 | 0zd 11740 | . . 3 ⊢ (𝑁 ∈ ℕ0 → 0 ∈ ℤ) | |
10 | 2z 11761 | . . . 4 ⊢ 2 ∈ ℤ | |
11 | zmulcl 11778 | . . . 4 ⊢ ((2 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (2 · 𝑁) ∈ ℤ) | |
12 | 10, 8, 11 | sylancr 581 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (2 · 𝑁) ∈ ℤ) |
13 | elfz 12649 | . . 3 ⊢ ((𝑁 ∈ ℤ ∧ 0 ∈ ℤ ∧ (2 · 𝑁) ∈ ℤ) → (𝑁 ∈ (0...(2 · 𝑁)) ↔ (0 ≤ 𝑁 ∧ 𝑁 ≤ (2 · 𝑁)))) | |
14 | 8, 9, 12, 13 | syl3anc 1439 | . 2 ⊢ (𝑁 ∈ ℕ0 → (𝑁 ∈ (0...(2 · 𝑁)) ↔ (0 ≤ 𝑁 ∧ 𝑁 ≤ (2 · 𝑁)))) |
15 | 1, 7, 14 | mpbir2and 703 | 1 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ (0...(2 · 𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 198 ∧ wa 386 ∈ wcel 2106 class class class wbr 4886 (class class class)co 6922 ℝcr 10271 0cc0 10272 + caddc 10275 · cmul 10277 ≤ cle 10412 2c2 11430 ℕ0cn0 11642 ℤcz 11728 ...cfz 12643 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1839 ax-4 1853 ax-5 1953 ax-6 2021 ax-7 2054 ax-8 2108 ax-9 2115 ax-10 2134 ax-11 2149 ax-12 2162 ax-13 2333 ax-ext 2753 ax-sep 5017 ax-nul 5025 ax-pow 5077 ax-pr 5138 ax-un 7226 ax-cnex 10328 ax-resscn 10329 ax-1cn 10330 ax-icn 10331 ax-addcl 10332 ax-addrcl 10333 ax-mulcl 10334 ax-mulrcl 10335 ax-mulcom 10336 ax-addass 10337 ax-mulass 10338 ax-distr 10339 ax-i2m1 10340 ax-1ne0 10341 ax-1rid 10342 ax-rnegex 10343 ax-rrecex 10344 ax-cnre 10345 ax-pre-lttri 10346 ax-pre-lttrn 10347 ax-pre-ltadd 10348 ax-pre-mulgt0 10349 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 837 df-3or 1072 df-3an 1073 df-tru 1605 df-ex 1824 df-nf 1828 df-sb 2012 df-mo 2550 df-eu 2586 df-clab 2763 df-cleq 2769 df-clel 2773 df-nfc 2920 df-ne 2969 df-nel 3075 df-ral 3094 df-rex 3095 df-reu 3096 df-rab 3098 df-v 3399 df-sbc 3652 df-csb 3751 df-dif 3794 df-un 3796 df-in 3798 df-ss 3805 df-pss 3807 df-nul 4141 df-if 4307 df-pw 4380 df-sn 4398 df-pr 4400 df-tp 4402 df-op 4404 df-uni 4672 df-iun 4755 df-br 4887 df-opab 4949 df-mpt 4966 df-tr 4988 df-id 5261 df-eprel 5266 df-po 5274 df-so 5275 df-fr 5314 df-we 5316 df-xp 5361 df-rel 5362 df-cnv 5363 df-co 5364 df-dm 5365 df-rn 5366 df-res 5367 df-ima 5368 df-pred 5933 df-ord 5979 df-on 5980 df-lim 5981 df-suc 5982 df-iota 6099 df-fun 6137 df-fn 6138 df-f 6139 df-f1 6140 df-fo 6141 df-f1o 6142 df-fv 6143 df-riota 6883 df-ov 6925 df-oprab 6926 df-mpt2 6927 df-om 7344 df-wrecs 7689 df-recs 7751 df-rdg 7789 df-er 8026 df-en 8242 df-dom 8243 df-sdom 8244 df-pnf 10413 df-mnf 10414 df-xr 10415 df-ltxr 10416 df-le 10417 df-sub 10608 df-neg 10609 df-nn 11375 df-2 11438 df-n0 11643 df-z 11729 df-fz 12644 |
This theorem is referenced by: bcctr 25452 pcbcctr 25453 bcp1ctr 25456 bposlem1 25461 bposlem3 25463 bposlem5 25465 bposlem6 25466 chebbnd1lem1 25610 |
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