Theorem mpteq2dva 3847

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 1421	. 2 |- F/ x ph
2		mpteq2dva.1	. 2 |- ( ( ph /\ x e. A ) -> B = C )
3	1, 2	mpteq2da 3846	1 |- ( ph -> ( x e. A |-> B ) = ( x e. A |-> C ) )

Syntax hints:   -> wi 4   /\ wa 97   = wceq 1243   e. wcel 1393   |-> cmpt 3818

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-5 1336  ax-7 1337  ax-gen 1338  ax-ie1 1382  ax-ie2 1383  ax-8 1395  ax-11 1397  ax-4 1400  ax-17 1419  ax-i9 1423  ax-ial 1427  ax-i5r 1428  ax-ext 2022

This theorem depends on definitions:  df-bi 110  df-tru 1246  df-nf 1350  df-sb 1646  df-clab 2027  df-cleq 2033  df-clel 2036  df-ral 2311  df-opab 3819  df-mpt 3820

This theorem is referenced by:  mpteq2dv  3848  fmptapd  5354  offval  5719  offval2  5726  caofinvl  5733  caofcom  5734  freceq1  5979  freceq2  5980  sumeq1  9874