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Mirrors > Home > MPE Home > Th. List > vdw | Structured version Visualization version GIF version |
Description: Van der Waerden's theorem. For any finite coloring 𝑅 and integer 𝐾, there is an 𝑁 such that every coloring function from 1...𝑁 to 𝑅 contains a monochromatic arithmetic progression (which written out in full means that there is a color 𝑐 and base, increment values 𝑎, 𝑑 such that all the numbers 𝑎, 𝑎 + 𝑑, ..., 𝑎 + (𝑘 − 1)𝑑 lie in the preimage of {𝑐}, i.e. they are all in 1...𝑁 and 𝑓 evaluated at each one yields 𝑐). (Contributed by Mario Carneiro, 13-Sep-2014.) |
Ref | Expression |
---|---|
vdw | ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → ∃𝑛 ∈ ℕ ∀𝑓 ∈ (𝑅 ↑m (1...𝑛))∃𝑐 ∈ 𝑅 ∃𝑎 ∈ ℕ ∃𝑑 ∈ ℕ ∀𝑚 ∈ (0...(𝐾 − 1))(𝑎 + (𝑚 · 𝑑)) ∈ (◡𝑓 “ {𝑐})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 482 | . . 3 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → 𝑅 ∈ Fin) | |
2 | simpr 484 | . . 3 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → 𝐾 ∈ ℕ0) | |
3 | 1, 2 | vdwlem13 16622 | . 2 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → ∃𝑛 ∈ ℕ ∀𝑓 ∈ (𝑅 ↑m (1...𝑛))𝐾 MonoAP 𝑓) |
4 | ovex 7288 | . . . . 5 ⊢ (1...𝑛) ∈ V | |
5 | simpllr 772 | . . . . 5 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 𝐾 ∈ ℕ0) | |
6 | simpll 763 | . . . . . . 7 ⊢ (((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) → 𝑅 ∈ Fin) | |
7 | elmapg 8586 | . . . . . . 7 ⊢ ((𝑅 ∈ Fin ∧ (1...𝑛) ∈ V) → (𝑓 ∈ (𝑅 ↑m (1...𝑛)) ↔ 𝑓:(1...𝑛)⟶𝑅)) | |
8 | 6, 4, 7 | sylancl 585 | . . . . . 6 ⊢ (((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) → (𝑓 ∈ (𝑅 ↑m (1...𝑛)) ↔ 𝑓:(1...𝑛)⟶𝑅)) |
9 | 8 | biimpa 476 | . . . . 5 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 𝑓:(1...𝑛)⟶𝑅) |
10 | simplr 765 | . . . . . . 7 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 𝑛 ∈ ℕ) | |
11 | nnuz 12550 | . . . . . . 7 ⊢ ℕ = (ℤ≥‘1) | |
12 | 10, 11 | eleqtrdi 2849 | . . . . . 6 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 𝑛 ∈ (ℤ≥‘1)) |
13 | eluzfz1 13192 | . . . . . 6 ⊢ (𝑛 ∈ (ℤ≥‘1) → 1 ∈ (1...𝑛)) | |
14 | 12, 13 | syl 17 | . . . . 5 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 1 ∈ (1...𝑛)) |
15 | 4, 5, 9, 14 | vdwmc2 16608 | . . . 4 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → (𝐾 MonoAP 𝑓 ↔ ∃𝑐 ∈ 𝑅 ∃𝑎 ∈ ℕ ∃𝑑 ∈ ℕ ∀𝑚 ∈ (0...(𝐾 − 1))(𝑎 + (𝑚 · 𝑑)) ∈ (◡𝑓 “ {𝑐}))) |
16 | 15 | ralbidva 3119 | . . 3 ⊢ (((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) → (∀𝑓 ∈ (𝑅 ↑m (1...𝑛))𝐾 MonoAP 𝑓 ↔ ∀𝑓 ∈ (𝑅 ↑m (1...𝑛))∃𝑐 ∈ 𝑅 ∃𝑎 ∈ ℕ ∃𝑑 ∈ ℕ ∀𝑚 ∈ (0...(𝐾 − 1))(𝑎 + (𝑚 · 𝑑)) ∈ (◡𝑓 “ {𝑐}))) |
17 | 16 | rexbidva 3224 | . 2 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → (∃𝑛 ∈ ℕ ∀𝑓 ∈ (𝑅 ↑m (1...𝑛))𝐾 MonoAP 𝑓 ↔ ∃𝑛 ∈ ℕ ∀𝑓 ∈ (𝑅 ↑m (1...𝑛))∃𝑐 ∈ 𝑅 ∃𝑎 ∈ ℕ ∃𝑑 ∈ ℕ ∀𝑚 ∈ (0...(𝐾 − 1))(𝑎 + (𝑚 · 𝑑)) ∈ (◡𝑓 “ {𝑐}))) |
18 | 3, 17 | mpbid 231 | 1 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → ∃𝑛 ∈ ℕ ∀𝑓 ∈ (𝑅 ↑m (1...𝑛))∃𝑐 ∈ 𝑅 ∃𝑎 ∈ ℕ ∃𝑑 ∈ ℕ ∀𝑚 ∈ (0...(𝐾 − 1))(𝑎 + (𝑚 · 𝑑)) ∈ (◡𝑓 “ {𝑐})) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∈ wcel 2108 ∀wral 3063 ∃wrex 3064 Vcvv 3422 {csn 4558 class class class wbr 5070 ◡ccnv 5579 “ cima 5583 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ↑m cmap 8573 Fincfn 8691 0cc0 10802 1c1 10803 + caddc 10805 · cmul 10807 − cmin 11135 ℕcn 11903 ℕ0cn0 12163 ℤ≥cuz 12511 ...cfz 13168 MonoAP cvdwm 16595 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-oadd 8271 df-er 8456 df-map 8575 df-pm 8576 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-dju 9590 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-n0 12164 df-xnn0 12236 df-z 12250 df-uz 12512 df-rp 12660 df-fz 13169 df-hash 13973 df-vdwap 16597 df-vdwmc 16598 df-vdwpc 16599 |
This theorem is referenced by: vdwnnlem1 16624 |
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