Theorem ralseurals 50890

Description: "All some one" restricted to a class implies "all some" restricted to that class. Restricted counterpart of alseuals 50889. (Contributed by David A. Wheeler, 21-Jul-2026.)

Assertion

Ref	Expression
ralseurals	⊢ (∀∃!𝑥 ∈ 𝐴(𝜑 → 𝜓) → ∀∃𝑥 ∈ 𝐴(𝜑 → 𝜓))

Proof of Theorem ralseurals

Step	Hyp	Ref	Expression
1		reurex 3370	. . 3 ⊢ (∃!𝑥 ∈ 𝐴 𝜑 → ∃𝑥 ∈ 𝐴 𝜑)
2	1	anim2i 629	. 2 ⊢ ((∀𝑥 ∈ 𝐴 (𝜑 → 𝜓) ∧ ∃!𝑥 ∈ 𝐴 𝜑) → (∀𝑥 ∈ 𝐴 (𝜑 → 𝜓) ∧ ∃𝑥 ∈ 𝐴 𝜑))
3		df-ralseu 50887	. 2 ⊢ (∀∃!𝑥 ∈ 𝐴(𝜑 → 𝜓) ↔ (∀𝑥 ∈ 𝐴 (𝜑 → 𝜓) ∧ ∃!𝑥 ∈ 𝐴 𝜑))
4		df-rals 50854	. 2 ⊢ (∀∃𝑥 ∈ 𝐴(𝜑 → 𝜓) ↔ (∀𝑥 ∈ 𝐴 (𝜑 → 𝜓) ∧ ∃𝑥 ∈ 𝐴 𝜑))
5	2, 3, 4	3imtr4i 295	1 ⊢ (∀∃!𝑥 ∈ 𝐴(𝜑 → 𝜓) → ∀∃𝑥 ∈ 𝐴(𝜑 → 𝜓))

This proof depends on syntax axioms:   → wi 4   ∧ wa 401  ∀wral 3077  ∃wrex 3087  ∃!wreu 3364  ∀∃wrals 50852  ∀∃!wralseu 50885

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This proof depends on definitions:  df-bi 210  df-an 402  df-eu 2595  df-rex 3088  df-rmo 3366  df-reu 3367  df-rals 50854  df-ralseu 50887

This theorem is used by: (None)