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Mirrors > Home > MPE Home > Th. List > anbi2ci | Structured version Visualization version GIF version |
Description: Variant of anbi2i 726 with commutation. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (Proof shortened by Andrew Salmon, 14-Jun-2011.) |
Ref | Expression |
---|---|
anbi.1 | ⊢ (𝜑 ↔ 𝜓) |
Ref | Expression |
---|---|
anbi2ci | ⊢ ((𝜑 ∧ 𝜒) ↔ (𝜒 ∧ 𝜓)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | anbi.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
2 | 1 | anbi1i 727 | . 2 ⊢ ((𝜑 ∧ 𝜒) ↔ (𝜓 ∧ 𝜒)) |
3 | ancom 465 | . 2 ⊢ ((𝜓 ∧ 𝜒) ↔ (𝜒 ∧ 𝜓)) | |
4 | 2, 3 | bitri 263 | 1 ⊢ ((𝜑 ∧ 𝜒) ↔ (𝜒 ∧ 𝜓)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 195 ∧ wa 383 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 196 df-an 385 |
This theorem is referenced by: ifpn 1016 clabel 2736 difin0ss 3900 disjxun 4581 asymref 5431 ordpwsuc 6907 supmo 8241 infmo 8284 kmlem3 8857 cfval2 8965 eqger 17467 gaorber 17564 opprunit 18484 xmeter 22048 iscvsp 22736 bj-clabel 31971 clsk1indlem4 37362 usgr2pth0 40971 alimp-no-surprise 42336 |
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