Theorem frrlem16 9516

Description: Lemma for general well-founded recursion. Establish a subset relationship. (Contributed by Scott Fenton, 11-Sep-2023.) Revised notion of transitive closure. (Revised by Scott Fenton, 1-Dec-2024.)

Assertion

Ref	Expression
frrlem16	⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ 𝑧 ∈ 𝐴) → ∀𝑤 ∈ Pred (t++(𝑅 ↾ 𝐴), 𝐴, 𝑧)Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))

Distinct variable groups:   𝑤,𝑅,𝑧   𝑤,𝐴,𝑧

Proof of Theorem frrlem16

Step	Hyp	Ref	Expression
1		predres 6242	. . . . . 6 ⊢ Pred(𝑅, 𝐴, 𝑤) = Pred((𝑅 ↾ 𝐴), 𝐴, 𝑤)
2		relres 5920	. . . . . . . 8 ⊢ Rel (𝑅 ↾ 𝐴)
3		ssttrcl 9473	. . . . . . . 8 ⊢ (Rel (𝑅 ↾ 𝐴) → (𝑅 ↾ 𝐴) ⊆ t++(𝑅 ↾ 𝐴))
4	2, 3	ax-mp 5	. . . . . . 7 ⊢ (𝑅 ↾ 𝐴) ⊆ t++(𝑅 ↾ 𝐴)
5		predrelss 6240	. . . . . . 7 ⊢ ((𝑅 ↾ 𝐴) ⊆ t++(𝑅 ↾ 𝐴) → Pred((𝑅 ↾ 𝐴), 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑤))
6	4, 5	ax-mp 5	. . . . . 6 ⊢ Pred((𝑅 ↾ 𝐴), 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑤)
7	1, 6	eqsstri 3955	. . . . 5 ⊢ Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑤)
8		inss1 4162	. . . . . . . . 9 ⊢ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ⊆ t++(𝑅 ↾ 𝐴)
9		coss1 5764	. . . . . . . . 9 ⊢ ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ⊆ t++(𝑅 ↾ 𝐴) → ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ (t++(𝑅 ↾ 𝐴) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))))
10	8, 9	ax-mp 5	. . . . . . . 8 ⊢ ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ (t++(𝑅 ↾ 𝐴) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)))
11		coss2 5765	. . . . . . . . 9 ⊢ ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ⊆ t++(𝑅 ↾ 𝐴) → (t++(𝑅 ↾ 𝐴) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ (t++(𝑅 ↾ 𝐴) ∘ t++(𝑅 ↾ 𝐴)))
12	8, 11	ax-mp 5	. . . . . . . 8 ⊢ (t++(𝑅 ↾ 𝐴) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ (t++(𝑅 ↾ 𝐴) ∘ t++(𝑅 ↾ 𝐴))
13	10, 12	sstri 3930	. . . . . . 7 ⊢ ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ (t++(𝑅 ↾ 𝐴) ∘ t++(𝑅 ↾ 𝐴))
14		ttrcltr 9474	. . . . . . 7 ⊢ (t++(𝑅 ↾ 𝐴) ∘ t++(𝑅 ↾ 𝐴)) ⊆ t++(𝑅 ↾ 𝐴)
15	13, 14	sstri 3930	. . . . . 6 ⊢ ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ t++(𝑅 ↾ 𝐴)
16		predtrss 6225	. . . . . 6 ⊢ ((((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ t++(𝑅 ↾ 𝐴) ∧ 𝑤 ∈ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧) ∧ 𝑧 ∈ 𝐴) → Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
17	15, 16	mp3an1 1447	. . . . 5 ⊢ ((𝑤 ∈ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧) ∧ 𝑧 ∈ 𝐴) → Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
18	7, 17	sstrid 3932	. . . 4 ⊢ ((𝑤 ∈ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧) ∧ 𝑧 ∈ 𝐴) → Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
19	18	ancoms 459	. . 3 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧)) → Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
20	19	ralrimiva 3103	. 2 ⊢ (𝑧 ∈ 𝐴 → ∀𝑤 ∈ Pred (t++(𝑅 ↾ 𝐴), 𝐴, 𝑧)Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
21	20	adantl 482	1 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ 𝑧 ∈ 𝐴) → ∀𝑤 ∈ Pred (t++(𝑅 ↾ 𝐴), 𝐴, 𝑧)Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))

Syntax hints:   → wi 4   ∧ wa 396   ∈ wcel 2106  ∀wral 3064   ∩ cin 3886   ⊆ wss 3887   Fr wfr 5541   Se wse 5542   × cxp 5587   ↾ cres 5591   ∘ ccom 5593  Rel wrel 5594  Predcpred 6201  t++cttrcl 9465

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pr 5352  ax-un 7588

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-rmo 3071  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-int 4880  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-pred 6202  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-riota 7232  df-ov 7278  df-oprab 7279  df-mpo 7280  df-om 7713  df-2nd 7832  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-rdg 8241  df-1o 8297  df-oadd 8301  df-ttrcl 9466

This theorem is referenced by:  frr1  9517