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Theorem 3anrot 1014
Description: Rotation law for triple conjunction. (Contributed by NM, 8-Apr-1994.)
Assertion
Ref Expression
3anrot ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ (𝜓 ∧ 𝜒 ∧ 𝜑))

Proof of Theorem 3anrot
StepHypRef Expression
1 ancom 266 . 2 ((𝜑 ∧ (𝜓 ∧ 𝜒)) ↔ ((𝜓 ∧ 𝜒) ∧ 𝜑))
2 3anass 1013 . 2 ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ (𝜑 ∧ (𝜓 ∧ 𝜒)))
3 df-3an 1011 . 2 ((𝜓 ∧ 𝜒 ∧ 𝜑) ↔ ((𝜓 ∧ 𝜒) ∧ 𝜑))
41, 2, 33bitr4i 212 1 ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ (𝜓 ∧ 𝜒 ∧ 𝜑))
Colors of variables:    wff set class
This proof depends on syntax axioms:   ∧ wa 104   ↔ wb 105   ∧ w3a 1009
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108
This proof depends on definitions:  df-bi 117  df-3an 1011
This theorem is used by:  3ancomb  1017  3anrev  1019  3simpc  1027  caovlem2d  6282  nnmcan  6792  modmulconst  12609  srgrmhm  14382  xmetpsmet  15561  comet  15691  lgsdi  16322  umgr2edg1  16616
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