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Related theorems GIF version |
| Description: Theorem 19.26 of [Margaris] p. 90 with restricted quantifiers. |
| Ref | Expression |
|---|---|
| r19.26 | ⊢ (∀x ∈ A (φ ∧ ψ) ↔ (∀x ∈ A φ ∧ ∀x ∈ A ψ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | jcab 454 | . . . 4 ⊢ ((x ∈ A → (φ ∧ ψ)) ↔ ((x ∈ A → φ) ∧ (x ∈ A → ψ))) | |
| 2 | 1 | bial 695 | . . 3 ⊢ (∀x(x ∈ A → (φ ∧ ψ)) ↔ ∀x((x ∈ A → φ) ∧ (x ∈ A → ψ))) |
| 3 | 19.26 749 | . . 3 ⊢ (∀x((x ∈ A → φ) ∧ (x ∈ A → ψ)) ↔ (∀x(x ∈ A → φ) ∧ ∀x(x ∈ A → ψ))) | |
| 4 | 2, 3 | bitr 151 | . 2 ⊢ (∀x(x ∈ A → (φ ∧ ψ)) ↔ (∀x(x ∈ A → φ) ∧ ∀x(x ∈ A → ψ))) |
| 5 | df-ral 1205 | . 2 ⊢ (∀x ∈ A (φ ∧ ψ) ↔ ∀x(x ∈ A → (φ ∧ ψ))) | |
| 6 | df-ral 1205 | . . 3 ⊢ (∀x ∈ A φ ↔ ∀x(x ∈ A → φ)) | |
| 7 | df-ral 1205 | . . 3 ⊢ (∀x ∈ A ψ ↔ ∀x(x ∈ A → ψ)) | |
| 8 | 6, 7 | anbi12i 369 | . 2 ⊢ ((∀x ∈ A φ ∧ ∀x ∈ A ψ) ↔ (∀x(x ∈ A → φ) ∧ ∀x(x ∈ A → ψ))) |
| 9 | 4, 5, 8 | 3bitr4 158 | 1 ⊢ (∀x ∈ A (φ ∧ ψ) ↔ (∀x ∈ A φ ∧ ∀x ∈ A ψ)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 ∧ wa 196 ∀wal 672 ∈ wcel 1092 ∀wral 1201 |
| This theorem is referenced by: r19.26-2 1290 r19.35 1298 r19.28zv 1769 r19.27zv 1771 raaan 1775 iuneq2 2006 fint 2769 tz7.48lem 2993 abianfp 3000 xpmapenlem4 3394 xpmapenlem5 3395 aceq5 3563 ac5b 3574 kmlem6 3585 climunii 4883 infxpidmlem7 4939 hlimunii 5143 ocsh 5164 spanun 5450 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-gen 677 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ral 1205 |