Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
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 483 | . . 3 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → 𝑅 ∈ Fin) | |
2 | simpr 485 | . . 3 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → 𝐾 ∈ ℕ0) | |
3 | 1, 2 | vdwlem13 16694 | . 2 ⊢ ((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) → ∃𝑛 ∈ ℕ ∀𝑓 ∈ (𝑅 ↑m (1...𝑛))𝐾 MonoAP 𝑓) |
4 | ovex 7308 | . . . . 5 ⊢ (1...𝑛) ∈ V | |
5 | simpllr 773 | . . . . 5 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 𝐾 ∈ ℕ0) | |
6 | simpll 764 | . . . . . . 7 ⊢ (((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) → 𝑅 ∈ Fin) | |
7 | elmapg 8628 | . . . . . . 7 ⊢ ((𝑅 ∈ Fin ∧ (1...𝑛) ∈ V) → (𝑓 ∈ (𝑅 ↑m (1...𝑛)) ↔ 𝑓:(1...𝑛)⟶𝑅)) | |
8 | 6, 4, 7 | sylancl 586 | . . . . . 6 ⊢ (((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) → (𝑓 ∈ (𝑅 ↑m (1...𝑛)) ↔ 𝑓:(1...𝑛)⟶𝑅)) |
9 | 8 | biimpa 477 | . . . . 5 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 𝑓:(1...𝑛)⟶𝑅) |
10 | simplr 766 | . . . . . . 7 ⊢ ((((𝑅 ∈ Fin ∧ 𝐾 ∈ ℕ0) ∧ 𝑛 ∈ ℕ) ∧ 𝑓 ∈ (𝑅 ↑m (1...𝑛))) → 𝑛 ∈ ℕ) | |
11 | nnuz 12621 | . . . . . . 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 13263 | . . . . . 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 16680 | . . . 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 3111 | . . 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 3225 | . 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 396 ∈ wcel 2106 ∀wral 3064 ∃wrex 3065 Vcvv 3432 {csn 4561 class class class wbr 5074 ◡ccnv 5588 “ cima 5592 ⟶wf 6429 ‘cfv 6433 (class class class)co 7275 ↑m cmap 8615 Fincfn 8733 0cc0 10871 1c1 10872 + caddc 10874 · cmul 10876 − cmin 11205 ℕcn 11973 ℕ0cn0 12233 ℤ≥cuz 12582 ...cfz 13239 MonoAP cvdwm 16667 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-oadd 8301 df-er 8498 df-map 8617 df-pm 8618 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-dju 9659 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-n0 12234 df-xnn0 12306 df-z 12320 df-uz 12583 df-rp 12731 df-fz 13240 df-hash 14045 df-vdwap 16669 df-vdwmc 16670 df-vdwpc 16671 |
This theorem is referenced by: vdwnnlem1 16696 |
Copyright terms: Public domain | W3C validator |