Theorem fnerel 36658

Description: Fineness is a relation. (Contributed by Jeff Hankins, 28-Sep-2009.)

Assertion

Ref	Expression
fnerel	⊢ Rel Fne

Proof of Theorem fnerel

Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-fne 36657	. 2 ⊢ Fne = {⟨𝑥, 𝑦⟩ ∣ (∪ 𝑥 = ∪ 𝑦 ∧ ∀𝑧 ∈ 𝑥 𝑧 ⊆ ∪ (𝑦 ∩ 𝒫 𝑧))}
2	1	relopabiv 5789	1 ⊢ Rel Fne

Syntax hints:   ∧ wa 399   = wceq 1559  ∀wral 3075   ∩ cin 3901   ⊆ wss 3902  𝒫 cpw 4552  ∪ cuni 4862  Rel wrel 5648  Fnecfne 36656

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-ext 2733

This theorem depends on definitions:  df-bi 209  df-an 400  df-tru 1562  df-ex 1799  df-sb 2090  df-clab 2740  df-cleq 2753  df-clel 2836  df-v 3455  df-ss 3919  df-opab 5160  df-xp 5649  df-rel 5650  df-fne 36657

This theorem is referenced by:  isfne  36659  isfne4  36660  fnetr  36671  fneval  36672  fneer  36673  fnessref  36677