Theorem ancom2s 566

Description: Inference commuting a nested conjunction in antecedent. (Contributed by NM, 24-May-2006.) (Proof shortened by Wolf Lammen, 24-Nov-2012.)

Hypothesis

Ref	Expression
an12s.1	⊢ ((𝜑 ∧ (𝜓 ∧ 𝜒)) → 𝜃)

Assertion

Ref	Expression
ancom2s	⊢ ((𝜑 ∧ (𝜒 ∧ 𝜓)) → 𝜃)

Proof of Theorem ancom2s

Step	Hyp	Ref	Expression
1		pm3.22 265	. 2 ⊢ ((𝜒 ∧ 𝜓) → (𝜓 ∧ 𝜒))
2		an12s.1	. 2 ⊢ ((𝜑 ∧ (𝜓 ∧ 𝜒)) → 𝜃)
3	1, 2	sylan2 286	1 ⊢ ((𝜑 ∧ (𝜒 ∧ 𝜓)) → 𝜃)

Syntax hints:   → wi 4   ∧ wa 104

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108

This theorem is referenced by:  an42s  589  ordsuc  4564  xpexr2m  5072  f1elima  5776  f1imaeq  5778  isosolem  5827  caovlem2d  6069  2ndconst  6225  isotilem  7007  prarloclem4  7499  mulsub  8360  leltadd  8406  eqord1  8442  divmul24ap  8675  fprodseq  11593  grpidpropdg  12798  cmnpropd  13103  unitpropdg  13322  blcomps  13981  blcom  13982  cxple  14422  cxple3  14426