Theorem syl13anc 1174

Description: Syllogism combined with contraction. (Contributed by NM, 11-Mar-2012.)

Hypotheses

Ref	Expression
sylXanc.1	⊢ (𝜑 → 𝜓)
sylXanc.2	⊢ (𝜑 → 𝜒)
sylXanc.3	⊢ (𝜑 → 𝜃)
sylXanc.4	⊢ (𝜑 → 𝜏)
syl13anc.5	⊢ ((𝜓 ∧ (𝜒 ∧ 𝜃 ∧ 𝜏)) → 𝜂)

Assertion

Ref	Expression
syl13anc	⊢ (𝜑 → 𝜂)

Proof of Theorem syl13anc

Step	Hyp	Ref	Expression
1		sylXanc.1	. 2 ⊢ (𝜑 → 𝜓)
2		sylXanc.2	. . 3 ⊢ (𝜑 → 𝜒)
3		sylXanc.3	. . 3 ⊢ (𝜑 → 𝜃)
4		sylXanc.4	. . 3 ⊢ (𝜑 → 𝜏)
5	2, 3, 4	3jca 1121	. 2 ⊢ (𝜑 → (𝜒 ∧ 𝜃 ∧ 𝜏))
6		syl13anc.5	. 2 ⊢ ((𝜓 ∧ (𝜒 ∧ 𝜃 ∧ 𝜏)) → 𝜂)
7	1, 5, 6	syl2anc 403	1 ⊢ (𝜑 → 𝜂)

Syntax hints:   → wi 4   ∧ wa 102   ∧ w3a 922

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106

This theorem depends on definitions:  df-bi 115  df-3an 924

This theorem is referenced by:  syl23anc  1179  syl33anc  1187  caovassd  5761  caovcand  5764  caovordid  5768  caovordd  5770  caovdid  5777  caovdird  5780  swoer  6272  swoord1  6273  swoord2  6274  fimax2gtrilemstep  6568  suplub2ti  6640  prarloclem3  7000  fzosubel3  9535  iseqsplit  9813  iseqcaopr  9817  zisum  10665  divalglemex  10804