Theorem dfvd2i 38801

Description: Inference form of dfvd2 38795. (Contributed by Alan Sare, 14-Nov-2011.) (Proof modification is discouraged.) (New usage is discouraged.)

Hypothesis

Ref	Expression
dfvd2i.1	|- (. ph ,. ps ->. ch ).

Assertion

Ref	Expression
dfvd2i	|- ( ph -> ( ps -> ch ) )

Proof of Theorem dfvd2i

Step	Hyp	Ref	Expression
1		dfvd2i.1	. 2 |- (. ph ,. ps ->. ch ).
2		dfvd2 38795	. 2 |- ( (. ph ,. ps ->. ch ). <-> ( ph -> ( ps -> ch ) ) )
3	1, 2	mpbi 220	1 |- ( ph -> ( ps -> ch ) )

Syntax hints:   -> wi 4   (.wvd2 38793

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 197  df-an 386  df-vd2 38794

This theorem is referenced by:  vd23  38827  in2  38830  in2an  38833  gen21  38844  gen21nv  38845  gen22  38847  exinst  38849  exinst01  38850  exinst11  38851  e2  38856  e222  38861  e233  38992  e323  38993