Theorem vtoclr 5722

Description: Variable to class conversion of transitive relation. (Contributed by NM, 9-Jun-1998.) (Revised by Mario Carneiro, 26-Apr-2015.)

Hypotheses

Ref	Expression
vtoclr.1	⊢ Rel 𝑅
vtoclr.2	⊢ ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧)

Assertion

Ref	Expression
vtoclr	⊢ ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → 𝐴𝑅𝐶)

Distinct variable groups:   𝑥,𝑦,𝐴   𝑦,𝐵   𝑥,𝑧,𝐶,𝑦   𝑥,𝑅,𝑦,𝑧

Allowed substitution hints:   𝐴(𝑧)   𝐵(𝑥,𝑧)

Proof of Theorem vtoclr

Step	Hyp	Ref	Expression
1		vtoclr.1	. . . . 5 ⊢ Rel 𝑅
2	1	brrelex12i 5714	. . . 4 ⊢ (𝐴𝑅𝐵 → (𝐴 ∈ V ∧ 𝐵 ∈ V))
3	1	brrelex2i 5716	. . . 4 ⊢ (𝐵𝑅𝐶 → 𝐶 ∈ V)
4		breq1 5113	. . . . . . . 8 ⊢ (𝑥 = 𝐴 → (𝑥𝑅𝑦 ↔ 𝐴𝑅𝑦))
5	4	anbi1d 642	. . . . . . 7 ⊢ (𝑥 = 𝐴 → ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝐶) ↔ (𝐴𝑅𝑦 ∧ 𝑦𝑅𝐶)))
6		breq1 5113	. . . . . . 7 ⊢ (𝑥 = 𝐴 → (𝑥𝑅𝐶 ↔ 𝐴𝑅𝐶))
7	5, 6	imbi12d 347	. . . . . 6 ⊢ (𝑥 = 𝐴 → (((𝑥𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝑥𝑅𝐶) ↔ ((𝐴𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝐴𝑅𝐶)))
8	7	imbi2d 343	. . . . 5 ⊢ (𝑥 = 𝐴 → ((𝐶 ∈ V → ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝑥𝑅𝐶)) ↔ (𝐶 ∈ V → ((𝐴𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝐴𝑅𝐶))))
9		breq2 5114	. . . . . . . 8 ⊢ (𝑦 = 𝐵 → (𝐴𝑅𝑦 ↔ 𝐴𝑅𝐵))
10		breq1 5113	. . . . . . . 8 ⊢ (𝑦 = 𝐵 → (𝑦𝑅𝐶 ↔ 𝐵𝑅𝐶))
11	9, 10	anbi12d 643	. . . . . . 7 ⊢ (𝑦 = 𝐵 → ((𝐴𝑅𝑦 ∧ 𝑦𝑅𝐶) ↔ (𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶)))
12	11	imbi1d 344	. . . . . 6 ⊢ (𝑦 = 𝐵 → (((𝐴𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝐴𝑅𝐶) ↔ ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → 𝐴𝑅𝐶)))
13	12	imbi2d 343	. . . . 5 ⊢ (𝑦 = 𝐵 → ((𝐶 ∈ V → ((𝐴𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝐴𝑅𝐶)) ↔ (𝐶 ∈ V → ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → 𝐴𝑅𝐶))))
14		breq2 5114	. . . . . . . 8 ⊢ (𝑧 = 𝐶 → (𝑦𝑅𝑧 ↔ 𝑦𝑅𝐶))
15	14	anbi2d 641	. . . . . . 7 ⊢ (𝑧 = 𝐶 → ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) ↔ (𝑥𝑅𝑦 ∧ 𝑦𝑅𝐶)))
16		breq2 5114	. . . . . . 7 ⊢ (𝑧 = 𝐶 → (𝑥𝑅𝑧 ↔ 𝑥𝑅𝐶))
17	15, 16	imbi12d 347	. . . . . 6 ⊢ (𝑧 = 𝐶 → (((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧) ↔ ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝑥𝑅𝐶)))
18		vtoclr.2	. . . . . 6 ⊢ ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧)
19	17, 18	vtoclg 3531	. . . . 5 ⊢ (𝐶 ∈ V → ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝐶) → 𝑥𝑅𝐶))
20	8, 13, 19	vtocl2g 3547	. . . 4 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐶 ∈ V → ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → 𝐴𝑅𝐶)))
21	2, 3, 20	syl2im 41	. . 3 ⊢ (𝐴𝑅𝐵 → (𝐵𝑅𝐶 → ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → 𝐴𝑅𝐶)))
22	21	imp 411	. 2 ⊢ ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → 𝐴𝑅𝐶))
23	22	pm2.43i 53	1 ⊢ ((𝐴𝑅𝐵 ∧ 𝐵𝑅𝐶) → 𝐴𝑅𝐶)

Syntax hints:   → wi 4   ∧ wa 400   = wceq 1567   ∈ wcel 2149  Vcvv 3463   class class class wbr 5110  Rel wrel 5664

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-ext 2741  ax-sep 5258  ax-pr 5402

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-br 5111  df-opab 5175  df-xp 5665  df-rel 5666

This theorem is referenced by:  domtr  9000