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Theorem ixpssmap2g 6939
Description: An infinite Cartesian product is a subset of set exponentiation. This version of ixpssmapg 6940 avoids ax-coll 4209. (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.
StepHypRef Expression
1 ixpf 6932 . . . . 5  |-  ( f  e.  X_ x  e.  A  B  ->  f : A --> U_ x  e.  A  B
)
21adantl 277 . . . 4  |-  ( (
U_ x  e.  A  B  e.  V  /\  f  e.  X_ x  e.  A  B )  -> 
f : A --> U_ x  e.  A  B )
3 ixpfn 6916 . . . . . 6  |-  ( f  e.  X_ x  e.  A  B  ->  f  Fn  A
)
4 fndm 5436 . . . . . . 7  |-  ( f  Fn  A  ->  dom  f  =  A )
5 vex 2806 . . . . . . . 8  |-  f  e. 
_V
65dmex 5005 . . . . . . 7  |-  dom  f  e.  _V
74, 6eqeltrrdi 2323 . . . . . 6  |-  ( f  Fn  A  ->  A  e.  _V )
83, 7syl 14 . . . . 5  |-  ( f  e.  X_ x  e.  A  B  ->  A  e.  _V )
9 elmapg 6873 . . . . 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 ) )
108, 9sylan2 286 . . . 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 ) )
112, 10mpbird 167 . . 3  |-  ( (
U_ x  e.  A  B  e.  V  /\  f  e.  X_ x  e.  A  B )  -> 
f  e.  ( U_ x  e.  A  B  ^m  A ) )
1211ex 115 . 2  |-  ( U_ x  e.  A  B  e.  V  ->  ( f  e.  X_ x  e.  A  B  ->  f  e.  (
U_ x  e.  A  B  ^m  A ) ) )
1312ssrdv 3234 1  |-  ( U_ x  e.  A  B  e.  V  ->  X_ x  e.  A  B  C_  ( U_ x  e.  A  B  ^m  A ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    e. wcel 2202   _Vcvv 2803    C_ wss 3201   U_ciun 3975   dom cdm 4731    Fn wfn 5328   -->wf 5329  (class class class)co 6028    ^m cmap 6860   X_cixp 6910
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-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ne 2404  df-ral 2516  df-rex 2517  df-v 2805  df-sbc 3033  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-fv 5341  df-ov 6031  df-oprab 6032  df-mpo 6033  df-map 6862  df-ixp 6911
This theorem is referenced by:  ixpssmapg  6940  prdsval  13419
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