Theorem ixpssmap2g 7937

Description: An infinite Cartesian product is a subset of set exponentiation. This version of ixpssmapg 7938 avoids ax-rep 4771. (Contributed by Mario Carneiro, 16-Nov-2014.)

Assertion

Ref	Expression
ixpssmap2g	|- ( U_ x e. A B e. V -> X_ x e. A B C_ ( U_ x e. A B ^m A ) )

Distinct variable group:   x, A

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

Proof of Theorem ixpssmap2g

Dummy variable f is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ixpf 7930	. . . . 5 |- ( f e. X_ x e. A B -> f : A --> U_ x e. A B )
2	1	adantl 482	. . . 4 |- ( ( U_ x e. A B e. V /\ f e. X_ x e. A B ) -> f : A --> U_ x e. A B )
3		n0i 3920	. . . . . 6 |- ( f e. X_ x e. A B -> -. X_ x e. A B = (/) )
4		ixpprc 7929	. . . . . 6 |- ( -. A e. _V -> X_ x e. A B = (/) )
5	3, 4	nsyl2 142	. . . . 5 |- ( f e. X_ x e. A B -> A e. _V )
6		elmapg 7870	. . . . 5 |- ( ( U_ x e. A B e. V /\ A e. _V ) -> ( f e. ( U_ x e. A B ^m A ) <-> f : A --> U_ x e. A B ) )
7	5, 6	sylan2 491	. . . 4 |- ( ( U_ x e. A B e. V /\ f e. X_ x e. A B ) -> ( f e. ( U_ x e. A B ^m A ) <-> f : A --> U_ x e. A B ) )
8	2, 7	mpbird 247	. . 3 |- ( ( U_ x e. A B e. V /\ f e. X_ x e. A B ) -> f e. ( U_ x e. A B ^m A ) )
9	8	ex 450	. 2 |- ( U_ x e. A B e. V -> ( f e. X_ x e. A B -> f e. ( U_ x e. A B ^m A ) ) )
10	9	ssrdv 3609	1 |- ( U_ x e. A B e. V -> X_ x e. A B C_ ( U_ x e. A B ^m A ) )

Syntax hints:   -> wi 4   <-> wb 196   /\ wa 384   = wceq 1483   e. wcel 1990   _Vcvv 3200   C_ wss 3574   (/)c0 3915   U_ciun 4520   -->wf 5884  (class class class)co 6650   ^m cmap 7857   X_cixp 7908

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-map 7859  df-ixp 7909

This theorem is referenced by:  ixpssmapg  7938  ixpfi  8263  ixpiunwdom  8496  prdsval  16115  prdsbas  16117  ixpssmapc  39243