Theorem ramlb 15723

Description: Establish a lower bound on a Ramsey number. (Contributed by Mario Carneiro, 22-Apr-2015.)

Hypotheses

Ref	Expression
ramlb.c	⊢ 𝐶 = (𝑎 ∈ V, 𝑖 ∈ ℕ0 ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (#‘𝑏) = 𝑖})
ramlb.m	⊢ (𝜑 → 𝑀 ∈ ℕ0)
ramlb.r	⊢ (𝜑 → 𝑅 ∈ 𝑉)
ramlb.f	⊢ (𝜑 → 𝐹:𝑅⟶ℕ0)
ramlb.s	⊢ (𝜑 → 𝑁 ∈ ℕ0)
ramlb.g	⊢ (𝜑 → 𝐺:((1...𝑁)𝐶𝑀)⟶𝑅)
ramlb.i	⊢ ((𝜑 ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → ((𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐}) → (#‘𝑥) < (𝐹‘𝑐)))

Assertion

Ref	Expression
ramlb	⊢ (𝜑 → 𝑁 < (𝑀 Ramsey 𝐹))

Distinct variable groups:   𝑥,𝑐,𝐶   𝐹,𝑐,𝑥   𝐺,𝑐,𝑥   𝑎,𝑏,𝑐,𝑖,𝑥,𝑀   𝜑,𝑐,𝑥   𝑁,𝑐,𝑥   𝑅,𝑐,𝑥   𝑉,𝑐,𝑥

Allowed substitution hints:   𝜑(𝑖,𝑎,𝑏)   𝐶(𝑖,𝑎,𝑏)   𝑅(𝑖,𝑎,𝑏)   𝐹(𝑖,𝑎,𝑏)   𝐺(𝑖,𝑎,𝑏)   𝑁(𝑖,𝑎,𝑏)   𝑉(𝑖,𝑎,𝑏)

Proof of Theorem ramlb

Step	Hyp	Ref	Expression
1		ramlb.c	. . . . 5 ⊢ 𝐶 = (𝑎 ∈ V, 𝑖 ∈ ℕ0 ↦ {𝑏 ∈ 𝒫 𝑎 ∣ (#‘𝑏) = 𝑖})
2		ramlb.m	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℕ0)
3	2	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → 𝑀 ∈ ℕ0)
4		ramlb.r	. . . . . 6 ⊢ (𝜑 → 𝑅 ∈ 𝑉)
5	4	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → 𝑅 ∈ 𝑉)
6		ramlb.f	. . . . . 6 ⊢ (𝜑 → 𝐹:𝑅⟶ℕ0)
7	6	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → 𝐹:𝑅⟶ℕ0)
8		ramlb.s	. . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ ℕ0)
9	8	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → 𝑁 ∈ ℕ0)
10		simpr 477	. . . . . 6 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → (𝑀 Ramsey 𝐹) ≤ 𝑁)
11		ramubcl 15722	. . . . . 6 ⊢ (((𝑀 ∈ ℕ0 ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ0) ∧ (𝑁 ∈ ℕ0 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁)) → (𝑀 Ramsey 𝐹) ∈ ℕ0)
12	3, 5, 7, 9, 10, 11	syl32anc 1334	. . . . 5 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → (𝑀 Ramsey 𝐹) ∈ ℕ0)
13		fzfid 12772	. . . . 5 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → (1...𝑁) ∈ Fin)
14		hashfz1 13134	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ0 → (#‘(1...𝑁)) = 𝑁)
15	8, 14	syl 17	. . . . . . 7 ⊢ (𝜑 → (#‘(1...𝑁)) = 𝑁)
16	15	breq2d 4665	. . . . . 6 ⊢ (𝜑 → ((𝑀 Ramsey 𝐹) ≤ (#‘(1...𝑁)) ↔ (𝑀 Ramsey 𝐹) ≤ 𝑁))
17	16	biimpar 502	. . . . 5 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → (𝑀 Ramsey 𝐹) ≤ (#‘(1...𝑁)))
18		ramlb.g	. . . . . 6 ⊢ (𝜑 → 𝐺:((1...𝑁)𝐶𝑀)⟶𝑅)
19	18	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → 𝐺:((1...𝑁)𝐶𝑀)⟶𝑅)
20	1, 3, 5, 7, 12, 13, 17, 19	rami 15719	. . . 4 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → ∃𝑐 ∈ 𝑅 ∃𝑥 ∈ 𝒫 (1...𝑁)((𝐹‘𝑐) ≤ (#‘𝑥) ∧ (𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐})))
21		elpwi 4168	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝒫 (1...𝑁) → 𝑥 ⊆ (1...𝑁))
22		ramlb.i	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → ((𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐}) → (#‘𝑥) < (𝐹‘𝑐)))
23	22	adantlr 751	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → ((𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐}) → (#‘𝑥) < (𝐹‘𝑐)))
24		fzfid 12772	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → (1...𝑁) ∈ Fin)
25		simprr 796	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → 𝑥 ⊆ (1...𝑁))
26		ssfi 8180	. . . . . . . . . . . . . 14 ⊢ (((1...𝑁) ∈ Fin ∧ 𝑥 ⊆ (1...𝑁)) → 𝑥 ∈ Fin)
27	24, 25, 26	syl2anc 693	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → 𝑥 ∈ Fin)
28		hashcl 13147	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ Fin → (#‘𝑥) ∈ ℕ0)
29	27, 28	syl 17	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → (#‘𝑥) ∈ ℕ0)
30	29	nn0red 11352	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → (#‘𝑥) ∈ ℝ)
31		simpl 473	. . . . . . . . . . . . 13 ⊢ ((𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁)) → 𝑐 ∈ 𝑅)
32		ffvelrn 6357	. . . . . . . . . . . . 13 ⊢ ((𝐹:𝑅⟶ℕ0 ∧ 𝑐 ∈ 𝑅) → (𝐹‘𝑐) ∈ ℕ0)
33	7, 31, 32	syl2an 494	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → (𝐹‘𝑐) ∈ ℕ0)
34	33	nn0red 11352	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → (𝐹‘𝑐) ∈ ℝ)
35	30, 34	ltnled 10184	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → ((#‘𝑥) < (𝐹‘𝑐) ↔ ¬ (𝐹‘𝑐) ≤ (#‘𝑥)))
36	23, 35	sylibd 229	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ⊆ (1...𝑁))) → ((𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐}) → ¬ (𝐹‘𝑐) ≤ (#‘𝑥)))
37	21, 36	sylanr2 685	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ∈ 𝒫 (1...𝑁))) → ((𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐}) → ¬ (𝐹‘𝑐) ≤ (#‘𝑥)))
38	37	con2d 129	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ∈ 𝒫 (1...𝑁))) → ((𝐹‘𝑐) ≤ (#‘𝑥) → ¬ (𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐})))
39		imnan 438	. . . . . . 7 ⊢ (((𝐹‘𝑐) ≤ (#‘𝑥) → ¬ (𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐})) ↔ ¬ ((𝐹‘𝑐) ≤ (#‘𝑥) ∧ (𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐})))
40	38, 39	sylib 208	. . . . . 6 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ∈ 𝒫 (1...𝑁))) → ¬ ((𝐹‘𝑐) ≤ (#‘𝑥) ∧ (𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐})))
41	40	pm2.21d 118	. . . . 5 ⊢ (((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) ∧ (𝑐 ∈ 𝑅 ∧ 𝑥 ∈ 𝒫 (1...𝑁))) → (((𝐹‘𝑐) ≤ (#‘𝑥) ∧ (𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐})) → ¬ (𝑀 Ramsey 𝐹) ≤ 𝑁))
42	41	rexlimdvva 3038	. . . 4 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → (∃𝑐 ∈ 𝑅 ∃𝑥 ∈ 𝒫 (1...𝑁)((𝐹‘𝑐) ≤ (#‘𝑥) ∧ (𝑥𝐶𝑀) ⊆ (◡𝐺 “ {𝑐})) → ¬ (𝑀 Ramsey 𝐹) ≤ 𝑁))
43	20, 42	mpd 15	. . 3 ⊢ ((𝜑 ∧ (𝑀 Ramsey 𝐹) ≤ 𝑁) → ¬ (𝑀 Ramsey 𝐹) ≤ 𝑁)
44	43	pm2.01da 458	. 2 ⊢ (𝜑 → ¬ (𝑀 Ramsey 𝐹) ≤ 𝑁)
45	8	nn0red 11352	. . . 4 ⊢ (𝜑 → 𝑁 ∈ ℝ)
46	45	rexrd 10089	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℝ*)
47		ramxrcl 15721	. . . 4 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑅 ∈ 𝑉 ∧ 𝐹:𝑅⟶ℕ0) → (𝑀 Ramsey 𝐹) ∈ ℝ*)
48	2, 4, 6, 47	syl3anc 1326	. . 3 ⊢ (𝜑 → (𝑀 Ramsey 𝐹) ∈ ℝ*)
49		xrltnle 10105	. . 3 ⊢ ((𝑁 ∈ ℝ* ∧ (𝑀 Ramsey 𝐹) ∈ ℝ*) → (𝑁 < (𝑀 Ramsey 𝐹) ↔ ¬ (𝑀 Ramsey 𝐹) ≤ 𝑁))
50	46, 48, 49	syl2anc 693	. 2 ⊢ (𝜑 → (𝑁 < (𝑀 Ramsey 𝐹) ↔ ¬ (𝑀 Ramsey 𝐹) ≤ 𝑁))
51	44, 50	mpbird 247	1 ⊢ (𝜑 → 𝑁 < (𝑀 Ramsey 𝐹))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∧ wa 384   = wceq 1483   ∈ wcel 1990  ∃wrex 2913  {crab 2916  Vcvv 3200   ⊆ wss 3574  𝒫 cpw 4158  {csn 4177   class class class wbr 4653  ^◡ccnv 5113   “ cima 5117  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650   ↦ cmpt2 6652  Fincfn 7955  1c1 9937  ℝ^*cxr 10073   < clt 10074   ≤ cle 10075  ℕ₀cn0 11292  ...cfz 12326  #chash 13117   Ramsey cram 15703

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-er 7742  df-map 7859  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-sup 8348  df-inf 8349  df-card 8765  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-nn 11021  df-n0 11293  df-z 11378  df-uz 11688  df-fz 12327  df-hash 13118  df-ram 15705

This theorem is referenced by:  0ram  15724  ram0  15726