Theorem smogt 8363

Description: A strictly monotone ordinal function is greater than or equal to its argument. Exercise 1 in [TakeutiZaring] p. 50. (Contributed by Andrew Salmon, 23-Nov-2011.) (Revised by Mario Carneiro, 28-Feb-2013.)

Assertion

Ref	Expression
smogt	⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝐶 ∈ 𝐴) → 𝐶 ⊆ (𝐹‘𝐶))

Proof of Theorem smogt

Dummy variables 𝑦 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		id 22	. . . . . 6 ⊢ (𝑥 = 𝐶 → 𝑥 = 𝐶)
2		fveq2 6882	. . . . . 6 ⊢ (𝑥 = 𝐶 → (𝐹‘𝑥) = (𝐹‘𝐶))
3	1, 2	sseq12d 4008	. . . . 5 ⊢ (𝑥 = 𝐶 → (𝑥 ⊆ (𝐹‘𝑥) ↔ 𝐶 ⊆ (𝐹‘𝐶)))
4	3	imbi2d 340	. . . 4 ⊢ (𝑥 = 𝐶 → (((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝑥 ⊆ (𝐹‘𝑥)) ↔ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝐶 ⊆ (𝐹‘𝐶))))
5		smodm2 8351	. . . . . . . . . 10 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → Ord 𝐴)
6	5	3adant3 1129	. . . . . . . . 9 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → Ord 𝐴)
7		simp3 1135	. . . . . . . . 9 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴)
8		ordelord 6377	. . . . . . . . 9 ⊢ ((Ord 𝐴 ∧ 𝑥 ∈ 𝐴) → Ord 𝑥)
9	6, 7, 8	syl2anc 583	. . . . . . . 8 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → Ord 𝑥)
10		vex 3470	. . . . . . . . 9 ⊢ 𝑥 ∈ V
11	10	elon 6364	. . . . . . . 8 ⊢ (𝑥 ∈ On ↔ Ord 𝑥)
12	9, 11	sylibr 233	. . . . . . 7 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ On)
13		eleq1w 2808	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → (𝑥 ∈ 𝐴 ↔ 𝑦 ∈ 𝐴))
14	13	3anbi3d 1438	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) ↔ (𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴)))
15		id 22	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → 𝑥 = 𝑦)
16		fveq2 6882	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → (𝐹‘𝑥) = (𝐹‘𝑦))
17	15, 16	sseq12d 4008	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝑥 ⊆ (𝐹‘𝑥) ↔ 𝑦 ⊆ (𝐹‘𝑦)))
18	14, 17	imbi12d 344	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → 𝑥 ⊆ (𝐹‘𝑥)) ↔ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴) → 𝑦 ⊆ (𝐹‘𝑦))))
19		simpl1 1188	. . . . . . . . . . . 12 ⊢ (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝑥) → 𝐹 Fn 𝐴)
20		simpl2 1189	. . . . . . . . . . . 12 ⊢ (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝑥) → Smo 𝐹)
21		ordtr1 6398	. . . . . . . . . . . . . . 15 ⊢ (Ord 𝐴 → ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ 𝐴) → 𝑦 ∈ 𝐴))
22	21	expcomd 416	. . . . . . . . . . . . . 14 ⊢ (Ord 𝐴 → (𝑥 ∈ 𝐴 → (𝑦 ∈ 𝑥 → 𝑦 ∈ 𝐴)))
23	6, 7, 22	sylc 65	. . . . . . . . . . . . 13 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → (𝑦 ∈ 𝑥 → 𝑦 ∈ 𝐴))
24	23	imp 406	. . . . . . . . . . . 12 ⊢ (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝑥) → 𝑦 ∈ 𝐴)
25		pm2.27 42	. . . . . . . . . . . 12 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴) → (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴) → 𝑦 ⊆ (𝐹‘𝑦)) → 𝑦 ⊆ (𝐹‘𝑦)))
26	19, 20, 24, 25	syl3anc 1368	. . . . . . . . . . 11 ⊢ (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝑥) → (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴) → 𝑦 ⊆ (𝐹‘𝑦)) → 𝑦 ⊆ (𝐹‘𝑦)))
27	26	ralimdva 3159	. . . . . . . . . 10 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝑥 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴) → 𝑦 ⊆ (𝐹‘𝑦)) → ∀𝑦 ∈ 𝑥 𝑦 ⊆ (𝐹‘𝑦)))
28	5	3adant3 1129	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → Ord 𝐴)
29		simp31 1206	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → 𝑥 ∈ 𝐴)
30	28, 29, 8	syl2anc 583	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → Ord 𝑥)
31		simp32 1207	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → 𝑦 ∈ 𝑥)
32		ordelord 6377	. . . . . . . . . . . . . . . . . 18 ⊢ ((Ord 𝑥 ∧ 𝑦 ∈ 𝑥) → Ord 𝑦)
33	30, 31, 32	syl2anc 583	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → Ord 𝑦)
34		smofvon2 8352	. . . . . . . . . . . . . . . . . . 19 ⊢ (Smo 𝐹 → (𝐹‘𝑥) ∈ On)
35	34	3ad2ant2 1131	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → (𝐹‘𝑥) ∈ On)
36		eloni 6365	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹‘𝑥) ∈ On → Ord (𝐹‘𝑥))
37	35, 36	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → Ord (𝐹‘𝑥))
38		simp33 1208	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → 𝑦 ⊆ (𝐹‘𝑦))
39		smoel2 8359	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐹 Fn 𝐴 ∧ Smo 𝐹) ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥)) → (𝐹‘𝑦) ∈ (𝐹‘𝑥))
40	39	3adantr3 1168	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐹 Fn 𝐴 ∧ Smo 𝐹) ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → (𝐹‘𝑦) ∈ (𝐹‘𝑥))
41	40	3impa 1107	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → (𝐹‘𝑦) ∈ (𝐹‘𝑥))
42		ordtr2 6399	. . . . . . . . . . . . . . . . . 18 ⊢ ((Ord 𝑦 ∧ Ord (𝐹‘𝑥)) → ((𝑦 ⊆ (𝐹‘𝑦) ∧ (𝐹‘𝑦) ∈ (𝐹‘𝑥)) → 𝑦 ∈ (𝐹‘𝑥)))
43	42	imp 406	. . . . . . . . . . . . . . . . 17 ⊢ (((Ord 𝑦 ∧ Ord (𝐹‘𝑥)) ∧ (𝑦 ⊆ (𝐹‘𝑦) ∧ (𝐹‘𝑦) ∈ (𝐹‘𝑥))) → 𝑦 ∈ (𝐹‘𝑥))
44	33, 37, 38, 41, 43	syl22anc 836	. . . . . . . . . . . . . . . 16 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦))) → 𝑦 ∈ (𝐹‘𝑥))
45	44	3expia 1118	. . . . . . . . . . . . . . 15 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥 ∧ 𝑦 ⊆ (𝐹‘𝑦)) → 𝑦 ∈ (𝐹‘𝑥)))
46	45	3expd 1350	. . . . . . . . . . . . . 14 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → (𝑥 ∈ 𝐴 → (𝑦 ∈ 𝑥 → (𝑦 ⊆ (𝐹‘𝑦) → 𝑦 ∈ (𝐹‘𝑥)))))
47	46	3impia 1114	. . . . . . . . . . . . 13 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → (𝑦 ∈ 𝑥 → (𝑦 ⊆ (𝐹‘𝑦) → 𝑦 ∈ (𝐹‘𝑥))))
48	47	imp 406	. . . . . . . . . . . 12 ⊢ (((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝑥) → (𝑦 ⊆ (𝐹‘𝑦) → 𝑦 ∈ (𝐹‘𝑥)))
49	48	ralimdva 3159	. . . . . . . . . . 11 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝑥 𝑦 ⊆ (𝐹‘𝑦) → ∀𝑦 ∈ 𝑥 𝑦 ∈ (𝐹‘𝑥)))
50		dfss3 3963	. . . . . . . . . . 11 ⊢ (𝑥 ⊆ (𝐹‘𝑥) ↔ ∀𝑦 ∈ 𝑥 𝑦 ∈ (𝐹‘𝑥))
51	49, 50	imbitrrdi 251	. . . . . . . . . 10 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝑥 𝑦 ⊆ (𝐹‘𝑦) → 𝑥 ⊆ (𝐹‘𝑥)))
52	27, 51	syldc 48	. . . . . . . . 9 ⊢ (∀𝑦 ∈ 𝑥 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴) → 𝑦 ⊆ (𝐹‘𝑦)) → ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → 𝑥 ⊆ (𝐹‘𝑥)))
53	52	a1i 11	. . . . . . . 8 ⊢ (𝑥 ∈ On → (∀𝑦 ∈ 𝑥 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑦 ∈ 𝐴) → 𝑦 ⊆ (𝐹‘𝑦)) → ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → 𝑥 ⊆ (𝐹‘𝑥))))
54	18, 53	tfis2 7840	. . . . . . 7 ⊢ (𝑥 ∈ On → ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → 𝑥 ⊆ (𝐹‘𝑥)))
55	12, 54	mpcom 38	. . . . . 6 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝑥 ∈ 𝐴) → 𝑥 ⊆ (𝐹‘𝑥))
56	55	3expia 1118	. . . . 5 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → (𝑥 ∈ 𝐴 → 𝑥 ⊆ (𝐹‘𝑥)))
57	56	com12 32	. . . 4 ⊢ (𝑥 ∈ 𝐴 → ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝑥 ⊆ (𝐹‘𝑥)))
58	4, 57	vtoclga 3558	. . 3 ⊢ (𝐶 ∈ 𝐴 → ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝐶 ⊆ (𝐹‘𝐶)))
59	58	com12 32	. 2 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → (𝐶 ∈ 𝐴 → 𝐶 ⊆ (𝐹‘𝐶)))
60	59	3impia 1114	1 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ 𝐶 ∈ 𝐴) → 𝐶 ⊆ (𝐹‘𝐶))

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1084   = wceq 1533   ∈ wcel 2098  ∀wral 3053   ⊆ wss 3941  Ord word 6354  Oncon0 6355   Fn wfn 6529  ‘cfv 6534  Smo wsmo 8341

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-10 2129  ax-11 2146  ax-12 2163  ax-ext 2695  ax-sep 5290  ax-nul 5297  ax-pr 5418

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 845  df-3or 1085  df-3an 1086  df-tru 1536  df-fal 1546  df-ex 1774  df-nf 1778  df-sb 2060  df-mo 2526  df-eu 2555  df-clab 2702  df-cleq 2716  df-clel 2802  df-nfc 2877  df-ne 2933  df-ral 3054  df-rex 3063  df-rab 3425  df-v 3468  df-dif 3944  df-un 3946  df-in 3948  df-ss 3958  df-pss 3960  df-nul 4316  df-if 4522  df-pw 4597  df-sn 4622  df-pr 4624  df-op 4628  df-uni 4901  df-br 5140  df-opab 5202  df-tr 5257  df-id 5565  df-eprel 5571  df-po 5579  df-so 5580  df-fr 5622  df-we 5624  df-xp 5673  df-rel 5674  df-cnv 5675  df-co 5676  df-dm 5677  df-rn 5678  df-ord 6358  df-on 6359  df-iota 6486  df-fun 6536  df-fn 6537  df-f 6538  df-fv 6542  df-smo 8342

This theorem is referenced by:  smocdmdom  8364  oismo  9532