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Mirrors > Home > MPE Home > Th. List > r19.26-2 | Structured version Visualization version GIF version |
Description: Restricted quantifier version of 19.26-2 1834. Version of r19.26 3120 with two quantifiers. (Contributed by NM, 10-Aug-2004.) |
Ref | Expression |
---|---|
r19.26-2 | ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 (𝜑 ∧ 𝜓) ↔ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | r19.26 3120 | . . 3 ⊢ (∀𝑦 ∈ 𝐵 (𝜑 ∧ 𝜓) ↔ (∀𝑦 ∈ 𝐵 𝜑 ∧ ∀𝑦 ∈ 𝐵 𝜓)) | |
2 | 1 | ralbii 3115 | . 2 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 (𝜑 ∧ 𝜓) ↔ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐵 𝜑 ∧ ∀𝑦 ∈ 𝐵 𝜓)) |
3 | r19.26 3120 | . 2 ⊢ (∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐵 𝜑 ∧ ∀𝑦 ∈ 𝐵 𝜓) ↔ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓)) | |
4 | 2, 3 | bitri 267 | 1 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 (𝜑 ∧ 𝜓) ↔ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 198 ∧ wa 387 ∀wral 3088 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1758 ax-4 1772 |
This theorem depends on definitions: df-bi 199 df-an 388 df-ral 3093 |
This theorem is referenced by: fununi 6262 tz7.48lem 7880 isffth2 17044 ispos2 17416 issgrpv 17754 issgrpn0 17755 isnsg2 18093 efgred 18634 dfrhm2 19192 cpmatacl 21028 cpmatmcllem 21030 caucfil 23589 aalioulem6 24629 ajmoi 28413 adjmo 29390 iccllysconn 32088 dfso3 32476 fvineqsnf1 34138 ispridl2 34764 ishlat2 35940 fiinfi 39300 ntrk1k3eqk13 39769 isrnghm 43533 |
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