Theorem axi4 2729

Description: Specialization (intuitionistic logic axiom ax-4). This is just sp 2222 by another name. (Contributed by Jim Kingdon, 31-Dec-2017.) (New usage is discouraged.)

Assertion

Ref	Expression
axi4	⊢ (∀𝑥𝜑 → 𝜑)

Proof of Theorem axi4

Step	Hyp	Ref	Expression
1		sp 2222	1 ⊢ (∀𝑥𝜑 → 𝜑)

This proof depends on syntax axioms:   → wi 4  ∀wal 1568

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-12 2216

This proof depends on definitions:  df-bi 210  df-ex 1813

This theorem is used by: (None)