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| Mirrors > Home > ILE Home > Th. List > r19.26 | GIF version | ||
| Description: Theorem 19.26 of [Margaris] p. 90 with restricted quantifiers. (Contributed by NM, 28-Jan-1997.) (Proof shortened by Andrew Salmon, 30-May-2011.) |
| Ref | Expression |
|---|---|
| r19.26 | ⊢ (∀𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐴 𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 109 | . . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝜑) | |
| 2 | 1 | ralimi 2593 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) → ∀𝑥 ∈ 𝐴 𝜑) |
| 3 | simpr 110 | . . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝜓) | |
| 4 | 3 | ralimi 2593 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) → ∀𝑥 ∈ 𝐴 𝜓) |
| 5 | 2, 4 | jca 306 | . 2 ⊢ (∀𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) → (∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐴 𝜓)) |
| 6 | pm3.2 139 | . . . 4 ⊢ (𝜑 → (𝜓 → (𝜑 ∧ 𝜓))) | |
| 7 | 6 | ral2imi 2595 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝜑 → (∀𝑥 ∈ 𝐴 𝜓 → ∀𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓))) |
| 8 | 7 | imp 124 | . 2 ⊢ ((∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐴 𝜓) → ∀𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓)) |
| 9 | 5, 8 | impbii 126 | 1 ⊢ (∀𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐴 𝜓)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 ∀wral 2508 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1493 ax-gen 1495 |
| This theorem depends on definitions: df-bi 117 df-ral 2513 |
| This theorem is referenced by: r19.27v 2658 r19.28v 2659 r19.26-2 2660 r19.26-3 2661 ralbiim 2665 r19.27av 2666 reu8 3000 ssrab 3303 r19.28m 3582 r19.27m 3588 2ralunsn 3880 iuneq2 3984 cnvpom 5277 funco 5364 fncnv 5393 funimaexglem 5410 fnres 5446 fnopabg 5453 mpteqb 5733 eqfnfv3 5742 caoftrn 6263 iinerm 6771 ixpeq2 6876 ixpin 6887 rexanuz 11539 recvguniq 11546 cau3lem 11665 rexanre 11771 bezoutlemmo 12567 sqrt2irr 12724 pc11 12894 issubg3 13769 issubg4m 13770 ringsrg 14050 tgval2 14765 metequiv 15209 metequiv2 15210 mulcncflem 15321 2sqlem6 15839 vtxd0nedgbfi 16105 uspgr2wlkeq 16162 upgr2wlkdc 16172 bj-indind 16463 |
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