Theorem bnj545 34871

Description: Technical lemma for bnj852 34897. This lemma may no longer be used or have become an indirect lemma of the theorem in question (i.e. a lemma of a lemma... of the theorem). (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.)

Hypotheses

Ref	Expression
bnj545.1	⊢ (𝜑′ ↔ (𝑓‘∅) = pred(𝑥, 𝐴, 𝑅))
bnj545.2	⊢ 𝐷 = (ω ∖ {∅})
bnj545.3	⊢ 𝐺 = (𝑓 ∪ {⟨𝑚, ∪ 𝑦 ∈ (𝑓‘𝑝) pred(𝑦, 𝐴, 𝑅)⟩})
bnj545.4	⊢ (𝜏 ↔ (𝑓 Fn 𝑚 ∧ 𝜑′ ∧ 𝜓′))
bnj545.5	⊢ (𝜎 ↔ (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ 𝑚))
bnj545.6	⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → 𝐺 Fn 𝑛)
bnj545.7	⊢ (𝜑″ ↔ (𝐺‘∅) = pred(𝑥, 𝐴, 𝑅))

Assertion

Ref	Expression
bnj545	⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → 𝜑″)

Proof of Theorem bnj545

Step	Hyp	Ref	Expression
1		bnj545.4	. . . . . . . . . 10 ⊢ (𝜏 ↔ (𝑓 Fn 𝑚 ∧ 𝜑′ ∧ 𝜓′))
2	1	simp1bi 1145	. . . . . . . . 9 ⊢ (𝜏 → 𝑓 Fn 𝑚)
3		bnj545.5	. . . . . . . . . 10 ⊢ (𝜎 ↔ (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ 𝑚))
4	3	simp1bi 1145	. . . . . . . . 9 ⊢ (𝜎 → 𝑚 ∈ 𝐷)
5	2, 4	anim12i 612	. . . . . . . 8 ⊢ ((𝜏 ∧ 𝜎) → (𝑓 Fn 𝑚 ∧ 𝑚 ∈ 𝐷))
6	5	3adant1 1130	. . . . . . 7 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → (𝑓 Fn 𝑚 ∧ 𝑚 ∈ 𝐷))
7		bnj545.2	. . . . . . . . 9 ⊢ 𝐷 = (ω ∖ {∅})
8	7	bnj529 34717	. . . . . . . 8 ⊢ (𝑚 ∈ 𝐷 → ∅ ∈ 𝑚)
9		fndm 6682	. . . . . . . 8 ⊢ (𝑓 Fn 𝑚 → dom 𝑓 = 𝑚)
10		eleq2 2833	. . . . . . . . 9 ⊢ (dom 𝑓 = 𝑚 → (∅ ∈ dom 𝑓 ↔ ∅ ∈ 𝑚))
11	10	biimparc 479	. . . . . . . 8 ⊢ ((∅ ∈ 𝑚 ∧ dom 𝑓 = 𝑚) → ∅ ∈ dom 𝑓)
12	8, 9, 11	syl2anr 596	. . . . . . 7 ⊢ ((𝑓 Fn 𝑚 ∧ 𝑚 ∈ 𝐷) → ∅ ∈ dom 𝑓)
13	6, 12	syl 17	. . . . . 6 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → ∅ ∈ dom 𝑓)
14		bnj545.6	. . . . . . 7 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → 𝐺 Fn 𝑛)
15	14	fnfund 6680	. . . . . 6 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → Fun 𝐺)
16	13, 15	jca 511	. . . . 5 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → (∅ ∈ dom 𝑓 ∧ Fun 𝐺))
17		bnj545.3	. . . . . 6 ⊢ 𝐺 = (𝑓 ∪ {⟨𝑚, ∪ 𝑦 ∈ (𝑓‘𝑝) pred(𝑦, 𝐴, 𝑅)⟩})
18	17	bnj931 34746	. . . . 5 ⊢ 𝑓 ⊆ 𝐺
19	16, 18	jctil 519	. . . 4 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → (𝑓 ⊆ 𝐺 ∧ (∅ ∈ dom 𝑓 ∧ Fun 𝐺)))
20		df-3an 1089	. . . . 5 ⊢ ((∅ ∈ dom 𝑓 ∧ Fun 𝐺 ∧ 𝑓 ⊆ 𝐺) ↔ ((∅ ∈ dom 𝑓 ∧ Fun 𝐺) ∧ 𝑓 ⊆ 𝐺))
21		3anrot 1100	. . . . 5 ⊢ ((∅ ∈ dom 𝑓 ∧ Fun 𝐺 ∧ 𝑓 ⊆ 𝐺) ↔ (Fun 𝐺 ∧ 𝑓 ⊆ 𝐺 ∧ ∅ ∈ dom 𝑓))
22		ancom 460	. . . . 5 ⊢ (((∅ ∈ dom 𝑓 ∧ Fun 𝐺) ∧ 𝑓 ⊆ 𝐺) ↔ (𝑓 ⊆ 𝐺 ∧ (∅ ∈ dom 𝑓 ∧ Fun 𝐺)))
23	20, 21, 22	3bitr3i 301	. . . 4 ⊢ ((Fun 𝐺 ∧ 𝑓 ⊆ 𝐺 ∧ ∅ ∈ dom 𝑓) ↔ (𝑓 ⊆ 𝐺 ∧ (∅ ∈ dom 𝑓 ∧ Fun 𝐺)))
24	19, 23	sylibr 234	. . 3 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → (Fun 𝐺 ∧ 𝑓 ⊆ 𝐺 ∧ ∅ ∈ dom 𝑓))
25		funssfv 6941	. . 3 ⊢ ((Fun 𝐺 ∧ 𝑓 ⊆ 𝐺 ∧ ∅ ∈ dom 𝑓) → (𝐺‘∅) = (𝑓‘∅))
26	24, 25	syl 17	. 2 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → (𝐺‘∅) = (𝑓‘∅))
27	1	simp2bi 1146	. . 3 ⊢ (𝜏 → 𝜑′)
28	27	3ad2ant2 1134	. 2 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → 𝜑′)
29		bnj545.1	. . . 4 ⊢ (𝜑′ ↔ (𝑓‘∅) = pred(𝑥, 𝐴, 𝑅))
30		eqtr 2763	. . . 4 ⊢ (((𝐺‘∅) = (𝑓‘∅) ∧ (𝑓‘∅) = pred(𝑥, 𝐴, 𝑅)) → (𝐺‘∅) = pred(𝑥, 𝐴, 𝑅))
31	29, 30	sylan2b 593	. . 3 ⊢ (((𝐺‘∅) = (𝑓‘∅) ∧ 𝜑′) → (𝐺‘∅) = pred(𝑥, 𝐴, 𝑅))
32		bnj545.7	. . 3 ⊢ (𝜑″ ↔ (𝐺‘∅) = pred(𝑥, 𝐴, 𝑅))
33	31, 32	sylibr 234	. 2 ⊢ (((𝐺‘∅) = (𝑓‘∅) ∧ 𝜑′) → 𝜑″)
34	26, 28, 33	syl2anc 583	1 ⊢ ((𝑅 FrSe 𝐴 ∧ 𝜏 ∧ 𝜎) → 𝜑″)

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1087   = wceq 1537   ∈ wcel 2108   ∖ cdif 3973   ∪ cun 3974   ⊆ wss 3976  ∅c0 4352  {csn 4648  ⟨cop 4654  ∪ ciun 5015  dom cdm 5700  suc csuc 6397  Fun wfun 6567   Fn wfn 6568  ‘cfv 6573  ωcom 7903   predc-bnj14 34664   FrSe w-bnj15 34668

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-12 2178  ax-ext 2711  ax-sep 5317  ax-nul 5324  ax-pr 5447

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 847  df-3or 1088  df-3an 1089  df-tru 1540  df-fal 1550  df-ex 1778  df-sb 2065  df-mo 2543  df-eu 2572  df-clab 2718  df-cleq 2732  df-clel 2819  df-ne 2947  df-ral 3068  df-rex 3077  df-rab 3444  df-v 3490  df-dif 3979  df-un 3981  df-in 3983  df-ss 3993  df-pss 3996  df-nul 4353  df-if 4549  df-pw 4624  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-br 5167  df-opab 5229  df-tr 5284  df-id 5593  df-eprel 5599  df-po 5607  df-so 5608  df-fr 5652  df-we 5654  df-xp 5706  df-rel 5707  df-cnv 5708  df-co 5709  df-dm 5710  df-res 5712  df-ord 6398  df-on 6399  df-iota 6525  df-fun 6575  df-fn 6576  df-fv 6581  df-om 7904

This theorem is referenced by:  bnj600  34895  bnj908  34907