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Mirrors > Home > MPE Home > Th. List > Mathboxes > gen12 | Structured version Visualization version GIF version |
Description: Virtual deduction generalizing rule for two quantifying variables and one virtual hypothesis. gen12 43369 is alrimivv 1931 with virtual deductions. (Contributed by Alan Sare, 2-May-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
gen12.1 | ⊢ ( 𝜑 ▶ 𝜓 ) |
Ref | Expression |
---|---|
gen12 | ⊢ ( 𝜑 ▶ ∀𝑥∀𝑦𝜓 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | gen12.1 | . . . 4 ⊢ ( 𝜑 ▶ 𝜓 ) | |
2 | 1 | in1 43322 | . . 3 ⊢ (𝜑 → 𝜓) |
3 | 2 | alrimivv 1931 | . 2 ⊢ (𝜑 → ∀𝑥∀𝑦𝜓) |
4 | 3 | dfvd1ir 43324 | 1 ⊢ ( 𝜑 ▶ ∀𝑥∀𝑦𝜓 ) |
Colors of variables: wff setvar class |
Syntax hints: ∀wal 1539 ( wvd1 43320 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 |
This theorem depends on definitions: df-bi 206 df-vd1 43321 |
This theorem is referenced by: sspwtr 43572 pwtrVD 43575 pwtrrVD 43576 suctrALT2VD 43587 truniALTVD 43629 trintALTVD 43631 suctrALTcfVD 43674 |
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