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Theorem smogt 7633
 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 𝐹𝐶𝐴) → 𝐶 ⊆ (𝐹𝐶))

Proof of Theorem smogt
Dummy variables 𝑦 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 id 22 . . . . . 6 (𝑥 = 𝐶𝑥 = 𝐶)
2 fveq2 6352 . . . . . 6 (𝑥 = 𝐶 → (𝐹𝑥) = (𝐹𝐶))
31, 2sseq12d 3775 . . . . 5 (𝑥 = 𝐶 → (𝑥 ⊆ (𝐹𝑥) ↔ 𝐶 ⊆ (𝐹𝐶)))
43imbi2d 329 . . . 4 (𝑥 = 𝐶 → (((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝑥 ⊆ (𝐹𝑥)) ↔ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝐶 ⊆ (𝐹𝐶))))
5 smodm2 7621 . . . . . . . . . 10 ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → Ord 𝐴)
653adant3 1127 . . . . . . . . 9 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → Ord 𝐴)
7 simp3 1133 . . . . . . . . 9 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → 𝑥𝐴)
8 ordelord 5906 . . . . . . . . 9 ((Ord 𝐴𝑥𝐴) → Ord 𝑥)
96, 7, 8syl2anc 696 . . . . . . . 8 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → Ord 𝑥)
10 vex 3343 . . . . . . . . 9 𝑥 ∈ V
1110elon 5893 . . . . . . . 8 (𝑥 ∈ On ↔ Ord 𝑥)
129, 11sylibr 224 . . . . . . 7 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → 𝑥 ∈ On)
13 eleq1w 2822 . . . . . . . . . 10 (𝑥 = 𝑦 → (𝑥𝐴𝑦𝐴))
14133anbi3d 1554 . . . . . . . . 9 (𝑥 = 𝑦 → ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) ↔ (𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴)))
15 id 22 . . . . . . . . . 10 (𝑥 = 𝑦𝑥 = 𝑦)
16 fveq2 6352 . . . . . . . . . 10 (𝑥 = 𝑦 → (𝐹𝑥) = (𝐹𝑦))
1715, 16sseq12d 3775 . . . . . . . . 9 (𝑥 = 𝑦 → (𝑥 ⊆ (𝐹𝑥) ↔ 𝑦 ⊆ (𝐹𝑦)))
1814, 17imbi12d 333 . . . . . . . 8 (𝑥 = 𝑦 → (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → 𝑥 ⊆ (𝐹𝑥)) ↔ ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴) → 𝑦 ⊆ (𝐹𝑦))))
19 simpl1 1228 . . . . . . . . . . . 12 (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) ∧ 𝑦𝑥) → 𝐹 Fn 𝐴)
20 simpl2 1230 . . . . . . . . . . . 12 (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) ∧ 𝑦𝑥) → Smo 𝐹)
21 ordtr1 5928 . . . . . . . . . . . . . . 15 (Ord 𝐴 → ((𝑦𝑥𝑥𝐴) → 𝑦𝐴))
2221expcomd 453 . . . . . . . . . . . . . 14 (Ord 𝐴 → (𝑥𝐴 → (𝑦𝑥𝑦𝐴)))
236, 7, 22sylc 65 . . . . . . . . . . . . 13 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → (𝑦𝑥𝑦𝐴))
2423imp 444 . . . . . . . . . . . 12 (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) ∧ 𝑦𝑥) → 𝑦𝐴)
25 pm2.27 42 . . . . . . . . . . . 12 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴) → (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴) → 𝑦 ⊆ (𝐹𝑦)) → 𝑦 ⊆ (𝐹𝑦)))
2619, 20, 24, 25syl3anc 1477 . . . . . . . . . . 11 (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) ∧ 𝑦𝑥) → (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴) → 𝑦 ⊆ (𝐹𝑦)) → 𝑦 ⊆ (𝐹𝑦)))
2726ralimdva 3100 . . . . . . . . . 10 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → (∀𝑦𝑥 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴) → 𝑦 ⊆ (𝐹𝑦)) → ∀𝑦𝑥 𝑦 ⊆ (𝐹𝑦)))
2853adant3 1127 . . . . . . . . . . . . . . . . . . 19 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → Ord 𝐴)
29 simp31 1252 . . . . . . . . . . . . . . . . . . 19 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → 𝑥𝐴)
3028, 29, 8syl2anc 696 . . . . . . . . . . . . . . . . . 18 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → Ord 𝑥)
31 simp32 1253 . . . . . . . . . . . . . . . . . 18 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → 𝑦𝑥)
32 ordelord 5906 . . . . . . . . . . . . . . . . . 18 ((Ord 𝑥𝑦𝑥) → Ord 𝑦)
3330, 31, 32syl2anc 696 . . . . . . . . . . . . . . . . 17 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → Ord 𝑦)
34 smofvon2 7622 . . . . . . . . . . . . . . . . . . 19 (Smo 𝐹 → (𝐹𝑥) ∈ On)
35343ad2ant2 1129 . . . . . . . . . . . . . . . . . 18 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → (𝐹𝑥) ∈ On)
36 eloni 5894 . . . . . . . . . . . . . . . . . 18 ((𝐹𝑥) ∈ On → Ord (𝐹𝑥))
3735, 36syl 17 . . . . . . . . . . . . . . . . 17 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → Ord (𝐹𝑥))
38 simp33 1254 . . . . . . . . . . . . . . . . 17 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → 𝑦 ⊆ (𝐹𝑦))
39 smoel2 7629 . . . . . . . . . . . . . . . . . . 19 (((𝐹 Fn 𝐴 ∧ Smo 𝐹) ∧ (𝑥𝐴𝑦𝑥)) → (𝐹𝑦) ∈ (𝐹𝑥))
40393adantr3 1177 . . . . . . . . . . . . . . . . . 18 (((𝐹 Fn 𝐴 ∧ Smo 𝐹) ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → (𝐹𝑦) ∈ (𝐹𝑥))
41403impa 1101 . . . . . . . . . . . . . . . . 17 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → (𝐹𝑦) ∈ (𝐹𝑥))
42 ordtr2 5929 . . . . . . . . . . . . . . . . . 18 ((Ord 𝑦 ∧ Ord (𝐹𝑥)) → ((𝑦 ⊆ (𝐹𝑦) ∧ (𝐹𝑦) ∈ (𝐹𝑥)) → 𝑦 ∈ (𝐹𝑥)))
4342imp 444 . . . . . . . . . . . . . . . . 17 (((Ord 𝑦 ∧ Ord (𝐹𝑥)) ∧ (𝑦 ⊆ (𝐹𝑦) ∧ (𝐹𝑦) ∈ (𝐹𝑥))) → 𝑦 ∈ (𝐹𝑥))
4433, 37, 38, 41, 43syl22anc 1478 . . . . . . . . . . . . . . . 16 ((𝐹 Fn 𝐴 ∧ Smo 𝐹 ∧ (𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦))) → 𝑦 ∈ (𝐹𝑥))
45443expia 1115 . . . . . . . . . . . . . . 15 ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → ((𝑥𝐴𝑦𝑥𝑦 ⊆ (𝐹𝑦)) → 𝑦 ∈ (𝐹𝑥)))
46453expd 1447 . . . . . . . . . . . . . 14 ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → (𝑥𝐴 → (𝑦𝑥 → (𝑦 ⊆ (𝐹𝑦) → 𝑦 ∈ (𝐹𝑥)))))
47463impia 1110 . . . . . . . . . . . . 13 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → (𝑦𝑥 → (𝑦 ⊆ (𝐹𝑦) → 𝑦 ∈ (𝐹𝑥))))
4847imp 444 . . . . . . . . . . . 12 (((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) ∧ 𝑦𝑥) → (𝑦 ⊆ (𝐹𝑦) → 𝑦 ∈ (𝐹𝑥)))
4948ralimdva 3100 . . . . . . . . . . 11 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → (∀𝑦𝑥 𝑦 ⊆ (𝐹𝑦) → ∀𝑦𝑥 𝑦 ∈ (𝐹𝑥)))
50 dfss3 3733 . . . . . . . . . . 11 (𝑥 ⊆ (𝐹𝑥) ↔ ∀𝑦𝑥 𝑦 ∈ (𝐹𝑥))
5149, 50syl6ibr 242 . . . . . . . . . 10 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → (∀𝑦𝑥 𝑦 ⊆ (𝐹𝑦) → 𝑥 ⊆ (𝐹𝑥)))
5227, 51syldc 48 . . . . . . . . 9 (∀𝑦𝑥 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴) → 𝑦 ⊆ (𝐹𝑦)) → ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → 𝑥 ⊆ (𝐹𝑥)))
5352a1i 11 . . . . . . . 8 (𝑥 ∈ On → (∀𝑦𝑥 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑦𝐴) → 𝑦 ⊆ (𝐹𝑦)) → ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → 𝑥 ⊆ (𝐹𝑥))))
5418, 53tfis2 7221 . . . . . . 7 (𝑥 ∈ On → ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → 𝑥 ⊆ (𝐹𝑥)))
5512, 54mpcom 38 . . . . . 6 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝑥𝐴) → 𝑥 ⊆ (𝐹𝑥))
56553expia 1115 . . . . 5 ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → (𝑥𝐴𝑥 ⊆ (𝐹𝑥)))
5756com12 32 . . . 4 (𝑥𝐴 → ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝑥 ⊆ (𝐹𝑥)))
584, 57vtoclga 3412 . . 3 (𝐶𝐴 → ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → 𝐶 ⊆ (𝐹𝐶)))
5958com12 32 . 2 ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → (𝐶𝐴𝐶 ⊆ (𝐹𝐶)))
60593impia 1110 1 ((𝐹 Fn 𝐴 ∧ Smo 𝐹𝐶𝐴) → 𝐶 ⊆ (𝐹𝐶))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 383   ∧ w3a 1072   = wceq 1632   ∈ wcel 2139  ∀wral 3050   ⊆ wss 3715  Ord word 5883  Oncon0 5884   Fn wfn 6044  ‘cfv 6049  Smo wsmo 7611 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114 This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-rab 3059  df-v 3342  df-sbc 3577  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-pss 3731  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-tp 4326  df-op 4328  df-uni 4589  df-br 4805  df-opab 4865  df-tr 4905  df-id 5174  df-eprel 5179  df-po 5187  df-so 5188  df-fr 5225  df-we 5227  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-ord 5887  df-on 5888  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-fv 6057  df-smo 7612 This theorem is referenced by:  smorndom  7634  oismo  8610
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