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Theorem cldss2 13270
Description: The set of closed sets is contained in the powerset of the base. (Contributed by Mario Carneiro, 6-Jan-2014.)
Hypothesis
Ref Expression
iscld.1  |-  X  = 
U. J
Assertion
Ref Expression
cldss2  |-  ( Clsd `  J )  C_  ~P X

Proof of Theorem cldss2
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 iscld.1 . . . 4  |-  X  = 
U. J
21cldss 13269 . . 3  |-  ( x  e.  ( Clsd `  J
)  ->  x  C_  X
)
3 velpw 3581 . . 3  |-  ( x  e.  ~P X  <->  x  C_  X
)
42, 3sylibr 134 . 2  |-  ( x  e.  ( Clsd `  J
)  ->  x  e.  ~P X )
54ssriv 3159 1  |-  ( Clsd `  J )  C_  ~P X
Colors of variables: wff set class
Syntax hints:    = wceq 1353    e. wcel 2148    C_ wss 3129   ~Pcpw 3574   U.cuni 3807   ` cfv 5212   Clsdccld 13256
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 614  ax-in2 615  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-13 2150  ax-14 2151  ax-ext 2159  ax-sep 4118  ax-pow 4171  ax-pr 4206  ax-un 4430
This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ral 2460  df-rex 2461  df-rab 2464  df-v 2739  df-sbc 2963  df-dif 3131  df-un 3133  df-in 3135  df-ss 3142  df-pw 3576  df-sn 3597  df-pr 3598  df-op 3600  df-uni 3808  df-br 4001  df-opab 4062  df-mpt 4063  df-id 4290  df-xp 4629  df-rel 4630  df-cnv 4631  df-co 4632  df-dm 4633  df-iota 5174  df-fun 5214  df-fn 5215  df-fv 5220  df-top 13160  df-cld 13259
This theorem is referenced by: (None)
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