Theorem fvmptd2 5643

Description: Deduction version of fvmpt 5638 (where the definition of the mapping does not depend on the common antecedent ph). (Contributed by Glauco Siliprandi, 23-Oct-2021.)

Hypotheses

Ref	Expression
fvmptd2.1	|- F = ( x e. D |-> B )
fvmptd2.2	|- ( ( ph /\ x = A ) -> B = C )
fvmptd2.3	|- ( ph -> A e. D )
fvmptd2.4	|- ( ph -> C e. V )

Assertion

Ref	Expression
fvmptd2	|- ( ph -> ( F ` A ) = C )

Distinct variable groups:   x, A   x, C   x, D   ph, x

Allowed substitution hints:   B( x)   F( x)   V( x)

Proof of Theorem fvmptd2

Step	Hyp	Ref	Expression
1		fvmptd2.1	. . 3 |- F = ( x e. D |-> B )
2	1	a1i 9	. 2 |- ( ph -> F = ( x e. D |-> B ) )
3		fvmptd2.2	. 2 |- ( ( ph /\ x = A ) -> B = C )
4		fvmptd2.3	. 2 |- ( ph -> A e. D )
5		fvmptd2.4	. 2 |- ( ph -> C e. V )
6	2, 3, 4, 5	fvmptd 5642	1 |- ( ph -> ( F ` A ) = C )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1364   e. wcel 2167   |-> cmpt 4094   ` cfv 5258

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-14 2170  ax-ext 2178  ax-sep 4151  ax-pow 4207  ax-pr 4242

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-v 2765  df-sbc 2990  df-csb 3085  df-un 3161  df-in 3163  df-ss 3170  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-uni 3840  df-br 4034  df-opab 4095  df-mpt 4096  df-id 4328  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-iota 5219  df-fun 5260  df-fv 5266

This theorem is referenced by:  gausslemma2dlem2  15270  gausslemma2dlem3  15271