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Theorem ramz2 16992

Description: The Ramsey number when 𝐹 has value zero for some color 𝐶. (Contributed by Mario Carneiro, 22-Apr-2015.)

**Assertion**
Ref	Expression
ramz2	⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → (𝑀 Ramsey 𝐹) = 0)

Proof of Theorem ramz2 Dummy variables 𝑏 𝑓 𝑐 𝑠 𝑥 𝑎 𝑖 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2728	. . 3 ⊢ (𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖}) = (𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})
2		simpl1 1189	. . . 4 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → 𝑀 ∈ ℕ)
3	2	nnnn0d 12562	. . 3 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → 𝑀 ∈ ℕ₀)
4		simpl2 1190	. . 3 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → 𝑅 ∈ 𝑉)
5		simpl3 1191	. . 3 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → 𝐹:𝑅⟶ℕ₀)
6		0nn0 12517	. . . 4 ⊢ 0 ∈ ℕ₀
7	6	a1i 11	. . 3 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → 0 ∈ ℕ₀)
8		simplrl 776	. . . 4 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → 𝐶 ∈ 𝑅)
9		0elpw 5356	. . . . 5 ⊢ ∅ ∈ 𝒫 𝑠
10	9	a1i 11	. . . 4 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → ∅ ∈ 𝒫 𝑠)
11		simplrr 777	. . . . 5 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → (𝐹‘𝐶) = 0)
12		0le0 12343	. . . . 5 ⊢ 0 ≤ 0
13	11, 12	eqbrtrdi 5187	. . . 4 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → (𝐹‘𝐶) ≤ 0)
14		simpll1 1210	. . . . . 6 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → 𝑀 ∈ ℕ)
15	1	0hashbc 16975	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (∅(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) = ∅)
16	14, 15	syl 17	. . . . 5 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → (∅(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) = ∅)
17		0ss 4397	. . . . 5 ⊢ ∅ ⊆ (^◡𝑓 “ {𝐶})
18	16, 17	eqsstrdi 4034	. . . 4 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → (∅(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶}))
19		fveq2 6897	. . . . . . 7 ⊢ (𝑐 = 𝐶 → (𝐹‘𝑐) = (𝐹‘𝐶))
20	19	breq1d 5158	. . . . . 6 ⊢ (𝑐 = 𝐶 → ((𝐹‘𝑐) ≤ (♯‘𝑥) ↔ (𝐹‘𝐶) ≤ (♯‘𝑥)))
21		sneq 4639	. . . . . . . 8 ⊢ (𝑐 = 𝐶 → {𝑐} = {𝐶})
22	21	imaeq2d 6063	. . . . . . 7 ⊢ (𝑐 = 𝐶 → (^◡𝑓 “ {𝑐}) = (^◡𝑓 “ {𝐶}))
23	22	sseq2d 4012	. . . . . 6 ⊢ (𝑐 = 𝐶 → ((𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝑐}) ↔ (𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶})))
24	20, 23	anbi12d 631	. . . . 5 ⊢ (𝑐 = 𝐶 → (((𝐹‘𝑐) ≤ (♯‘𝑥) ∧ (𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝑐})) ↔ ((𝐹‘𝐶) ≤ (♯‘𝑥) ∧ (𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶}))))
25		fveq2 6897	. . . . . . . 8 ⊢ (𝑥 = ∅ → (♯‘𝑥) = (♯‘∅))
26		hash0 14358	. . . . . . . 8 ⊢ (♯‘∅) = 0
27	25, 26	eqtrdi 2784	. . . . . . 7 ⊢ (𝑥 = ∅ → (♯‘𝑥) = 0)
28	27	breq2d 5160	. . . . . 6 ⊢ (𝑥 = ∅ → ((𝐹‘𝐶) ≤ (♯‘𝑥) ↔ (𝐹‘𝐶) ≤ 0))
29		oveq1 7427	. . . . . . 7 ⊢ (𝑥 = ∅ → (𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) = (∅(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀))
30	29	sseq1d 4011	. . . . . 6 ⊢ (𝑥 = ∅ → ((𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶}) ↔ (∅(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶})))
31	28, 30	anbi12d 631	. . . . 5 ⊢ (𝑥 = ∅ → (((𝐹‘𝐶) ≤ (♯‘𝑥) ∧ (𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶})) ↔ ((𝐹‘𝐶) ≤ 0 ∧ (∅(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶}))))
32	24, 31	rspc2ev 3622	. . . 4 ⊢ ((𝐶 ∈ 𝑅 ∧ ∅ ∈ 𝒫 𝑠 ∧ ((𝐹‘𝐶) ≤ 0 ∧ (∅(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝐶}))) → ∃𝑐 ∈ 𝑅 ∃𝑥 ∈ 𝒫 𝑠((𝐹‘𝑐) ≤ (♯‘𝑥) ∧ (𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝑐})))
33	8, 10, 13, 18, 32	syl112anc 1372	. . 3 ⊢ ((((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) ∧ (0 ≤ (♯‘𝑠) ∧ 𝑓:(𝑠(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀)⟶𝑅)) → ∃𝑐 ∈ 𝑅 ∃𝑥 ∈ 𝒫 𝑠((𝐹‘𝑐) ≤ (♯‘𝑥) ∧ (𝑥(𝑎 ∈ V, 𝑖 ∈ ℕ₀ ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (♯‘𝑏) = 𝑖})𝑀) ⊆ (^◡𝑓 “ {𝑐})))
34	1, 3, 4, 5, 7, 33	ramub 16981	. 2 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → (𝑀 Ramsey 𝐹) ≤ 0)
35		ramubcl 16986	. . . 4 ⊢ (((𝑀 ∈ ℕ₀ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (0 ∈ ℕ₀ ∧ (𝑀 Ramsey 𝐹) ≤ 0)) → (𝑀 Ramsey 𝐹) ∈ ℕ₀)
36	3, 4, 5, 7, 34, 35	syl32anc 1376	. . 3 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → (𝑀 Ramsey 𝐹) ∈ ℕ₀)
37		nn0le0eq0 12530	. . 3 ⊢ ((𝑀 Ramsey 𝐹) ∈ ℕ₀ → ((𝑀 Ramsey 𝐹) ≤ 0 ↔ (𝑀 Ramsey 𝐹) = 0))
38	36, 37	syl 17	. 2 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → ((𝑀 Ramsey 𝐹) ≤ 0 ↔ (𝑀 Ramsey 𝐹) = 0))
39	34, 38	mpbid 231	1 ⊢ (((𝑀 ∈ ℕ ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ₀) ∧ (𝐶 ∈ 𝑅 ∧ (𝐹‘𝐶) = 0)) → (𝑀 Ramsey 𝐹) = 0)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1085 = wceq 1534 ∈ wcel 2099 ∃wrex 3067 {crab 3429 Vcvv 3471 ⊆ wss 3947 ∅c0 4323 𝒫 cpw 4603 {csn 4629 class class class wbr 5148 ^◡ccnv 5677 “ cima 5681 ⟶wf 6544 ‘cfv 6548 (class class class)co 7420 ∈ cmpo 7422 0cc0 11138 ≤ cle 11279 ℕcn 12242 ℕ₀cn0 12502 ♯chash 14321 Ramsey cram 16967

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 ax-pre-mulgt0 11215

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-int 4950 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7871 df-1st 7993 df-2nd 7994 df-frecs 8286 df-wrecs 8317 df-recs 8391 df-rdg 8430 df-1o 8486 df-oadd 8490 df-er 8724 df-map 8846 df-en 8964 df-dom 8965 df-sdom 8966 df-fin 8967 df-sup 9465 df-inf 9466 df-dju 9924 df-card 9962 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11476 df-neg 11477 df-div 11902 df-nn 12243 df-n0 12503 df-z 12589 df-uz 12853 df-rp 13007 df-fz 13517 df-seq 13999 df-fac 14265 df-bc 14294 df-hash 14322 df-ram 16969

This theorem is referenced by: ramz 16993 ramcl 16997

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