0ram2 - Metamath Proof Explorer

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Theorem 0ram2 16960

Description: The Ramsey number when 𝑀 = 0. (Contributed by Mario Carneiro, 22-Apr-2015.)

**Assertion**
Ref	Expression
0ram2	⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → (0 Ramsey 𝐹) = sup(ran 𝐹, ℝ, < ))

Proof of Theorem 0ram2 Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		frn 6725	. . . . 5 ⊢ (𝐹:𝑅⟶ℕ₀ → ran 𝐹 ⊆ ℕ₀)
2	1	3ad2ant3 1133	. . . 4 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → ran 𝐹 ⊆ ℕ₀)
3		nn0ssz 12587	. . . 4 ⊢ ℕ₀ ⊆ ℤ
4	2, 3	sstrdi 3995	. . 3 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → ran 𝐹 ⊆ ℤ)
5		nn0ssre 12482	. . . . 5 ⊢ ℕ₀ ⊆ ℝ
6	2, 5	sstrdi 3995	. . . 4 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → ran 𝐹 ⊆ ℝ)
7		simp1 1134	. . . . 5 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → 𝑅 ∈ Fin)
8		ffn 6718	. . . . . . 7 ⊢ (𝐹:𝑅⟶ℕ₀ → 𝐹 Fn 𝑅)
9	8	3ad2ant3 1133	. . . . . 6 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → 𝐹 Fn 𝑅)
10		dffn4 6812	. . . . . 6 ⊢ (𝐹 Fn 𝑅 ↔ 𝐹:𝑅–onto→ran 𝐹)
11	9, 10	sylib 217	. . . . 5 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → 𝐹:𝑅–onto→ran 𝐹)
12		fofi 9342	. . . . 5 ⊢ ((𝑅 ∈ Fin ∧ 𝐹:𝑅–onto→ran 𝐹) → ran 𝐹 ∈ Fin)
13	7, 11, 12	syl2anc 582	. . . 4 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → ran 𝐹 ∈ Fin)
14		fdm 6727	. . . . . . 7 ⊢ (𝐹:𝑅⟶ℕ₀ → dom 𝐹 = 𝑅)
15	14	3ad2ant3 1133	. . . . . 6 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → dom 𝐹 = 𝑅)
16		simp2 1135	. . . . . 6 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → 𝑅 ≠ ∅)
17	15, 16	eqnetrd 3006	. . . . 5 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → dom 𝐹 ≠ ∅)
18		dm0rn0 5925	. . . . . 6 ⊢ (dom 𝐹 = ∅ ↔ ran 𝐹 = ∅)
19	18	necon3bii 2991	. . . . 5 ⊢ (dom 𝐹 ≠ ∅ ↔ ran 𝐹 ≠ ∅)
20	17, 19	sylib 217	. . . 4 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → ran 𝐹 ≠ ∅)
21		fimaxre 12164	. . . 4 ⊢ ((ran 𝐹 ⊆ ℝ ∧ ran 𝐹 ∈ Fin ∧ ran 𝐹 ≠ ∅) → ∃𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹 𝑦 ≤ 𝑥)
22	6, 13, 20, 21	syl3anc 1369	. . 3 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → ∃𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹 𝑦 ≤ 𝑥)
23		ssrexv 4052	. . 3 ⊢ (ran 𝐹 ⊆ ℤ → (∃𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹 𝑦 ≤ 𝑥 → ∃𝑥 ∈ ℤ ∀𝑦 ∈ ran 𝐹 𝑦 ≤ 𝑥))
24	4, 22, 23	sylc 65	. 2 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → ∃𝑥 ∈ ℤ ∀𝑦 ∈ ran 𝐹 𝑦 ≤ 𝑥)
25		0ram 16959	. 2 ⊢ (((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) ∧ ∃𝑥 ∈ ℤ ∀𝑦 ∈ ran 𝐹 𝑦 ≤ 𝑥) → (0 Ramsey 𝐹) = sup(ran 𝐹, ℝ, < ))
26	24, 25	mpdan 683	1 ⊢ ((𝑅 ∈ Fin ∧ 𝑅 ≠ ∅ ∧ 𝐹:𝑅⟶ℕ₀) → (0 Ramsey 𝐹) = sup(ran 𝐹, ℝ, < ))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ w3a 1085 = wceq 1539 ∈ wcel 2104 ≠ wne 2938 ∀wral 3059 ∃wrex 3068 ⊆ wss 3949 ∅c0 4323 class class class wbr 5149 dom cdm 5677 ran crn 5678 Fn wfn 6539 ⟶wf 6540 –onto→wfo 6542 (class class class)co 7413 Fincfn 8943 supcsup 9439 ℝcr 11113 0cc0 11114 < clt 11254 ≤ cle 11255 ℕ₀cn0 12478 ℤcz 12564 Ramsey cram 16938

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7729 ax-cnex 11170 ax-resscn 11171 ax-1cn 11172 ax-icn 11173 ax-addcl 11174 ax-addrcl 11175 ax-mulcl 11176 ax-mulrcl 11177 ax-mulcom 11178 ax-addass 11179 ax-mulass 11180 ax-distr 11181 ax-i2m1 11182 ax-1ne0 11183 ax-1rid 11184 ax-rnegex 11185 ax-rrecex 11186 ax-cnre 11187 ax-pre-lttri 11188 ax-pre-lttrn 11189 ax-pre-ltadd 11190 ax-pre-mulgt0 11191

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-int 4952 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7369 df-ov 7416 df-oprab 7417 df-mpo 7418 df-om 7860 df-1st 7979 df-2nd 7980 df-frecs 8270 df-wrecs 8301 df-recs 8375 df-rdg 8414 df-1o 8470 df-oadd 8474 df-er 8707 df-map 8826 df-en 8944 df-dom 8945 df-sdom 8946 df-fin 8947 df-sup 9441 df-inf 9442 df-card 9938 df-pnf 11256 df-mnf 11257 df-xr 11258 df-ltxr 11259 df-le 11260 df-sub 11452 df-neg 11453 df-nn 12219 df-n0 12479 df-xnn0 12551 df-z 12565 df-uz 12829 df-fz 13491 df-hash 14297 df-ram 16940

This theorem is referenced by: 0ramcl 16962

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