Theorem syl233anc 1278

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

Hypotheses

Ref	Expression
sylXanc.1	|- ( ph -> ps )
sylXanc.2	|- ( ph -> ch )
sylXanc.3	|- ( ph -> th )
sylXanc.4	|- ( ph -> ta )
sylXanc.5	|- ( ph -> et )
sylXanc.6	|- ( ph -> ze )
sylXanc.7	|- ( ph -> si )
sylXanc.8	|- ( ph -> rh )
syl233anc.9	|- ( ( ( ps /\ ch ) /\ ( th /\ ta /\ et ) /\ ( ze /\ si /\ rh ) ) -> mu )

Assertion

Ref	Expression
syl233anc	|- ( ph -> mu )

Proof of Theorem syl233anc

Step	Hyp	Ref	Expression
1		sylXanc.1	. . 3 |- ( ph -> ps )
2		sylXanc.2	. . 3 |- ( ph -> ch )
3	1, 2	jca 306	. 2 |- ( ph -> ( ps /\ ch ) )
4		sylXanc.3	. 2 |- ( ph -> th )
5		sylXanc.4	. 2 |- ( ph -> ta )
6		sylXanc.5	. 2 |- ( ph -> et )
7		sylXanc.6	. 2 |- ( ph -> ze )
8		sylXanc.7	. 2 |- ( ph -> si )
9		sylXanc.8	. 2 |- ( ph -> rh )
10		syl233anc.9	. 2 |- ( ( ( ps /\ ch ) /\ ( th /\ ta /\ et ) /\ ( ze /\ si /\ rh ) ) -> mu )
11	3, 4, 5, 6, 7, 8, 9, 10	syl133anc 1272	1 |- ( ph -> mu )

Syntax hints:   -> wi 4   /\ wa 104   /\ w3a 980

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 depends on definitions:  df-bi 117  df-3an 982

This theorem is referenced by: (None)