Theorem fmptdf 5760

Description: A version of fmptd 5757 using bound-variable hypothesis instead of a distinct variable condition for ph. (Contributed by Glauco Siliprandi, 29-Jun-2017.)

Hypotheses

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

Assertion

Ref	Expression
fmptdf	|- ( ph -> F : A --> C )

Distinct variable groups:   x, A   x, C

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

Proof of Theorem fmptdf

Step	Hyp	Ref	Expression
1		fmptdf.1	. . 3 |- F/ x ph
2		fmptdf.2	. . . 4 |- ( ( ph /\ x e. A ) -> B e. C )
3	2	ex 115	. . 3 |- ( ph -> ( x e. A -> B e. C ) )
4	1, 3	ralrimi 2579	. 2 |- ( ph -> A. x e. A B e. C )
5		fmptdf.3	. . 3 |- F = ( x e. A |-> B )
6	5	fmpt 5753	. 2 |- ( A. x e. A B e. C <-> F : A --> C )
7	4, 6	sylib 122	1 |- ( ph -> F : A --> C )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1373   F/wnf 1484   e. wcel 2178   A.wral 2486   |-> cmpt 4121   -->wf 5286

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 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-14 2181  ax-ext 2189  ax-sep 4178  ax-pow 4234  ax-pr 4269

This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2194  df-cleq 2200  df-clel 2203  df-nfc 2339  df-ral 2491  df-rex 2492  df-rab 2495  df-v 2778  df-sbc 3006  df-un 3178  df-in 3180  df-ss 3187  df-pw 3628  df-sn 3649  df-pr 3650  df-op 3652  df-uni 3865  df-br 4060  df-opab 4122  df-mpt 4123  df-id 4358  df-xp 4699  df-rel 4700  df-cnv 4701  df-co 4702  df-dm 4703  df-rn 4704  df-res 4705  df-ima 4706  df-iota 5251  df-fun 5292  df-fn 5293  df-f 5294  df-fv 5298

This theorem is referenced by:  mkvprop  7286