Theorem bnj1096 34640

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

Hypotheses

Ref	Expression
bnj1096.1	⊢ (𝜑 → ∀𝑥𝜑)
bnj1096.2	⊢ (𝜓 ↔ (𝜒 ∧ 𝜃 ∧ 𝜏 ∧ 𝜑))

Assertion

Ref	Expression
bnj1096	⊢ (𝜓 → ∀𝑥𝜓)

Distinct variable groups:   𝜒,𝑥   𝜏,𝑥   𝜃,𝑥

Allowed substitution hints:   𝜑(𝑥)   𝜓(𝑥)

Proof of Theorem bnj1096

Step	Hyp	Ref	Expression
1		bnj1096.2	. 2 ⊢ (𝜓 ↔ (𝜒 ∧ 𝜃 ∧ 𝜏 ∧ 𝜑))
2		ax-5 1906	. . 3 ⊢ (𝜒 → ∀𝑥𝜒)
3		ax-5 1906	. . 3 ⊢ (𝜃 → ∀𝑥𝜃)
4		ax-5 1906	. . 3 ⊢ (𝜏 → ∀𝑥𝜏)
5		bnj1096.1	. . 3 ⊢ (𝜑 → ∀𝑥𝜑)
6	2, 3, 4, 5	bnj982 34636	. 2 ⊢ ((𝜒 ∧ 𝜃 ∧ 𝜏 ∧ 𝜑) → ∀𝑥(𝜒 ∧ 𝜃 ∧ 𝜏 ∧ 𝜑))
7	1, 6	hbxfrbi 1820	1 ⊢ (𝜓 → ∀𝑥𝜓)

Syntax hints:   → wi 4   ↔ wb 205  ∀wal 1532   ∧ w-bnj17 34544

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1906  ax-6 1964  ax-7 2004  ax-10 2130  ax-12 2167

This theorem depends on definitions:  df-bi 206  df-an 395  df-or 846  df-3an 1086  df-tru 1537  df-ex 1775  df-nf 1779  df-bnj17 34545

This theorem is referenced by:  bnj964  34801  bnj981  34808  bnj983  34809  bnj1093  34838  bnj1145  34851