Theorem mpteq2dva 3868

Description: Slightly more general equality inference for the maps to notation. (Contributed by Scott Fenton, 25-Apr-2012.)

Hypothesis

Ref	Expression
mpteq2dva.1	|- ( ( ph /\ x e. A ) -> B = C )

Assertion

Ref	Expression
mpteq2dva	|- ( ph -> ( x e. A |-> B ) = ( x e. A |-> C ) )

Distinct variable group:   ph, x

Allowed substitution hints:   A( x)   B( x)   C( x)

Proof of Theorem mpteq2dva

Step	Hyp	Ref	Expression
1		nfv 1461	. 2 |- F/ x ph
2		mpteq2dva.1	. 2 |- ( ( ph /\ x e. A ) -> B = C )
3	1, 2	mpteq2da 3867	1 |- ( ph -> ( x e. A |-> B ) = ( x e. A |-> C ) )

Syntax hints:   -> wi 4   /\ wa 102   = wceq 1284   e. wcel 1433   |-> cmpt 3839

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-11 1437  ax-4 1440  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063

This theorem depends on definitions:  df-bi 115  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-ral 2353  df-opab 3840  df-mpt 3841

This theorem is referenced by:  mpteq2dv  3869  fmptapd  5375  offval  5739  offval2  5746  caofinvl  5753  caofcom  5754  freceq1  6002  freceq2  6003  sumeq1  10192