Theorem alimdv 1932

Description: Deduction from Theorem 19.20 of [Margaris] p. 90. (Contributed by NM, 3-Apr-1994.)

Hypothesis

Ref	Expression
alimdv.1	⊢ (𝜑 → (𝜓 → 𝜒))

Assertion

Ref	Expression
alimdv	⊢ (𝜑 → (∀𝑥𝜓 → ∀𝑥𝜒))

Distinct variable group:   𝜑,𝑥

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

Proof of Theorem alimdv

Step	Hyp	Ref	Expression
1		ax-17 1579	. 2 ⊢ (𝜑 → ∀𝑥𝜑)
2		alimdv.1	. 2 ⊢ (𝜑 → (𝜓 → 𝜒))
3	1, 2	alimdh 1520	1 ⊢ (𝜑 → (∀𝑥𝜓 → ∀𝑥𝜒))

This proof depends on syntax axioms:   → wi 4  ∀wal 1400

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-5 1500  ax-gen 1502  ax-17 1579

This theorem is used by:  2alimdv  1934  moim  2151  ralimdv2  2620  sstr2  3255  reuss2  3513  ssuni  3957  disjss2  4109  disjss1  4112  disjiun  4125  exmidsssnc  4342  soss  4461  alxfr  4609  ssrel  4865  ssrel2  4867  ssrelrel  4877  iotaval  5352  omnimkv  7502