Theorem bnj1247 34797

Description: First-order logic and set theory. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.)

Hypothesis

Ref	Expression
bnj1247.1	⊢ (𝜑 ↔ (𝜓 ∧ 𝜒 ∧ 𝜃 ∧ 𝜏))

Assertion

Ref	Expression
bnj1247	⊢ (𝜑 → 𝜃)

Proof of Theorem bnj1247

Step	Hyp	Ref	Expression
1		bnj1247.1	. 2 ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒 ∧ 𝜃 ∧ 𝜏))
2		id 22	. 2 ⊢ (𝜃 → 𝜃)
3	1, 2	bnj771 34753	1 ⊢ (𝜑 → 𝜃)

Syntax hints:   → wi 4   ↔ wb 206   ∧ w-bnj17 34675

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 207  df-an 396  df-3an 1088  df-bnj17 34676

This theorem is referenced by:  bnj1110  34971  bnj1128  34979  bnj1245  35003