Theorem br1cnvinxp 38238

Description: Binary relation on the converse of an intersection with a Cartesian product. (Contributed by Peter Mazsa, 27-Jul-2019.)

Assertion

Ref	Expression
br1cnvinxp	⊢ (𝐶◡(𝑅 ∩ (𝐴 × 𝐵))𝐷 ↔ ((𝐶 ∈ 𝐵 ∧ 𝐷 ∈ 𝐴) ∧ 𝐷𝑅𝐶))

Proof of Theorem br1cnvinxp

Step	Hyp	Ref	Expression
1		relinxp 5827	. . 3 ⊢ Rel (𝑅 ∩ (𝐴 × 𝐵))
2	1	relbrcnv 6128	. 2 ⊢ (𝐶◡(𝑅 ∩ (𝐴 × 𝐵))𝐷 ↔ 𝐷(𝑅 ∩ (𝐴 × 𝐵))𝐶)
3		brinxp2 5766	. 2 ⊢ (𝐷(𝑅 ∩ (𝐴 × 𝐵))𝐶 ↔ ((𝐷 ∈ 𝐴 ∧ 𝐶 ∈ 𝐵) ∧ 𝐷𝑅𝐶))
4		ancom 460	. . 3 ⊢ ((𝐷 ∈ 𝐴 ∧ 𝐶 ∈ 𝐵) ↔ (𝐶 ∈ 𝐵 ∧ 𝐷 ∈ 𝐴))
5	4	anbi1i 624	. 2 ⊢ (((𝐷 ∈ 𝐴 ∧ 𝐶 ∈ 𝐵) ∧ 𝐷𝑅𝐶) ↔ ((𝐶 ∈ 𝐵 ∧ 𝐷 ∈ 𝐴) ∧ 𝐷𝑅𝐶))
6	2, 3, 5	3bitri 297	1 ⊢ (𝐶◡(𝑅 ∩ (𝐴 × 𝐵))𝐷 ↔ ((𝐶 ∈ 𝐵 ∧ 𝐷 ∈ 𝐴) ∧ 𝐷𝑅𝐶))

Syntax hints:   ↔ wb 206   ∧ wa 395   ∈ wcel 2106   ∩ cin 3962   class class class wbr 5148   × cxp 5687  ^◡ccnv 5688

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-ext 2706  ax-sep 5302  ax-nul 5312  ax-pr 5438

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-sb 2063  df-clab 2713  df-cleq 2727  df-clel 2814  df-ral 3060  df-rex 3069  df-rab 3434  df-v 3480  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-nul 4340  df-if 4532  df-sn 4632  df-pr 4634  df-op 4638  df-br 5149  df-opab 5211  df-xp 5695  df-rel 5696  df-cnv 5697

This theorem is referenced by:  br1cnvres  38251