Theorem frrlem16 9749

Description: Lemma for general well-founded recursion. Establish a subset relation. (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 6330	. . . . . 6 ⊢ Pred(𝑅, 𝐴, 𝑤) = Pred((𝑅 ↾ 𝐴), 𝐴, 𝑤)
2		relres 6000	. . . . . . . 8 ⊢ Rel (𝑅 ↾ 𝐴)
3		ssttrcl 9706	. . . . . . . 8 ⊢ (Rel (𝑅 ↾ 𝐴) → (𝑅 ↾ 𝐴) ⊆ t++(𝑅 ↾ 𝐴))
4	2, 3	ax-mp 5	. . . . . . 7 ⊢ (𝑅 ↾ 𝐴) ⊆ t++(𝑅 ↾ 𝐴)
5		predrelss 6328	. . . . . . 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 4008	. . . . 5 ⊢ Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑤)
8		inss1 4220	. . . . . . . . 9 ⊢ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ⊆ t++(𝑅 ↾ 𝐴)
9		coss1 5845	. . . . . . . . 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 5846	. . . . . . . . 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 3983	. . . . . . 7 ⊢ ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ (t++(𝑅 ↾ 𝐴) ∘ t++(𝑅 ↾ 𝐴))
14		ttrcltr 9707	. . . . . . 7 ⊢ (t++(𝑅 ↾ 𝐴) ∘ t++(𝑅 ↾ 𝐴)) ⊆ t++(𝑅 ↾ 𝐴)
15	13, 14	sstri 3983	. . . . . 6 ⊢ ((t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴)) ∘ (t++(𝑅 ↾ 𝐴) ∩ (𝐴 × 𝐴))) ⊆ t++(𝑅 ↾ 𝐴)
16		predtrss 6313	. . . . . 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 1444	. . . . 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 3985	. . . 4 ⊢ ((𝑤 ∈ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧) ∧ 𝑧 ∈ 𝐴) → Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
19	18	ancoms 458	. . 3 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧)) → Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
20	19	ralrimiva 3138	. 2 ⊢ (𝑧 ∈ 𝐴 → ∀𝑤 ∈ Pred (t++(𝑅 ↾ 𝐴), 𝐴, 𝑧)Pred(𝑅, 𝐴, 𝑤) ⊆ Pred(t++(𝑅 ↾ 𝐴), 𝐴, 𝑧))
21	20	adantl 481	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 395   ∈ wcel 2098  ∀wral 3053   ∩ cin 3939   ⊆ wss 3940   Fr wfr 5618   Se wse 5619   × cxp 5664   ↾ cres 5668   ∘ ccom 5670  Rel wrel 5671  Predcpred 6289  t++cttrcl 9698

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-rep 5275  ax-sep 5289  ax-nul 5296  ax-pr 5417  ax-un 7718

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-rmo 3368  df-reu 3369  df-rab 3425  df-v 3468  df-sbc 3770  df-csb 3886  df-dif 3943  df-un 3945  df-in 3947  df-ss 3957  df-pss 3959  df-nul 4315  df-if 4521  df-pw 4596  df-sn 4621  df-pr 4623  df-op 4627  df-uni 4900  df-int 4941  df-iun 4989  df-br 5139  df-opab 5201  df-mpt 5222  df-tr 5256  df-id 5564  df-eprel 5570  df-po 5578  df-so 5579  df-fr 5621  df-we 5623  df-xp 5672  df-rel 5673  df-cnv 5674  df-co 5675  df-dm 5676  df-rn 5677  df-res 5678  df-ima 5679  df-pred 6290  df-ord 6357  df-on 6358  df-lim 6359  df-suc 6360  df-iota 6485  df-fun 6535  df-fn 6536  df-f 6537  df-f1 6538  df-fo 6539  df-f1o 6540  df-fv 6541  df-riota 7357  df-ov 7404  df-oprab 7405  df-mpo 7406  df-om 7849  df-2nd 7969  df-frecs 8261  df-wrecs 8292  df-recs 8366  df-rdg 8405  df-1o 8461  df-oadd 8465  df-ttrcl 9699

This theorem is referenced by:  frr1  9750