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Theorem hauscmp 19032
Description: A compact subspace of a T2 space is closed. (Contributed by Jeff Hankins, 16-Jan-2010.) (Proof shortened by Mario Carneiro, 14-Dec-2013.)
Hypothesis
Ref Expression
hauscmp.1  |-  X  = 
U. J
Assertion
Ref Expression
hauscmp  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  S  e.  ( Clsd `  J ) )

Proof of Theorem hauscmp
Dummy variables  w  x  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simp2 989 . 2  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  S  C_  X )
2 hauscmp.1 . . . . . 6  |-  X  = 
U. J
3 eqid 2443 . . . . . 6  |-  { y  e.  J  |  E. w  e.  J  (
x  e.  w  /\  ( ( cls `  J
) `  w )  C_  ( X  \  y
) ) }  =  { y  e.  J  |  E. w  e.  J  ( x  e.  w  /\  ( ( cls `  J
) `  w )  C_  ( X  \  y
) ) }
4 simpl1 991 . . . . . 6  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  x  e.  ( X  \  S ) )  ->  J  e.  Haus )
5 simpl2 992 . . . . . 6  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  x  e.  ( X  \  S ) )  ->  S  C_  X
)
6 simpl3 993 . . . . . 6  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  x  e.  ( X  \  S ) )  ->  ( Jt  S
)  e.  Comp )
7 simpr 461 . . . . . 6  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  x  e.  ( X  \  S ) )  ->  x  e.  ( X  \  S ) )
82, 3, 4, 5, 6, 7hauscmplem 19031 . . . . 5  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  x  e.  ( X  \  S ) )  ->  E. z  e.  J  ( x  e.  z  /\  (
( cls `  J
) `  z )  C_  ( X  \  S
) ) )
9 haustop 18957 . . . . . . . . . . 11  |-  ( J  e.  Haus  ->  J  e. 
Top )
1093ad2ant1 1009 . . . . . . . . . 10  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  J  e.  Top )
11 elssuni 4142 . . . . . . . . . . 11  |-  ( z  e.  J  ->  z  C_ 
U. J )
1211, 2syl6sseqr 3424 . . . . . . . . . 10  |-  ( z  e.  J  ->  z  C_  X )
132sscls 18682 . . . . . . . . . 10  |-  ( ( J  e.  Top  /\  z  C_  X )  -> 
z  C_  ( ( cls `  J ) `  z ) )
1410, 12, 13syl2an 477 . . . . . . . . 9  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  z  e.  J
)  ->  z  C_  ( ( cls `  J
) `  z )
)
15 sstr2 3384 . . . . . . . . 9  |-  ( z 
C_  ( ( cls `  J ) `  z
)  ->  ( (
( cls `  J
) `  z )  C_  ( X  \  S
)  ->  z  C_  ( X  \  S ) ) )
1614, 15syl 16 . . . . . . . 8  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  z  e.  J
)  ->  ( (
( cls `  J
) `  z )  C_  ( X  \  S
)  ->  z  C_  ( X  \  S ) ) )
1716anim2d 565 . . . . . . 7  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  z  e.  J
)  ->  ( (
x  e.  z  /\  ( ( cls `  J
) `  z )  C_  ( X  \  S
) )  ->  (
x  e.  z  /\  z  C_  ( X  \  S ) ) ) )
1817reximdva 2849 . . . . . 6  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  ( E. z  e.  J  ( x  e.  z  /\  ( ( cls `  J ) `
 z )  C_  ( X  \  S ) )  ->  E. z  e.  J  ( x  e.  z  /\  z  C_  ( X  \  S
) ) ) )
1918adantr 465 . . . . 5  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  x  e.  ( X  \  S ) )  ->  ( E. z  e.  J  (
x  e.  z  /\  ( ( cls `  J
) `  z )  C_  ( X  \  S
) )  ->  E. z  e.  J  ( x  e.  z  /\  z  C_  ( X  \  S
) ) ) )
208, 19mpd 15 . . . 4  |-  ( ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  /\  x  e.  ( X  \  S ) )  ->  E. z  e.  J  ( x  e.  z  /\  z  C_  ( X  \  S
) ) )
2120ralrimiva 2820 . . 3  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  A. x  e.  ( X  \  S ) E. z  e.  J  ( x  e.  z  /\  z  C_  ( X 
\  S ) ) )
22 eltop2 18602 . . . 4  |-  ( J  e.  Top  ->  (
( X  \  S
)  e.  J  <->  A. x  e.  ( X  \  S
) E. z  e.  J  ( x  e.  z  /\  z  C_  ( X  \  S ) ) ) )
2310, 22syl 16 . . 3  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  ( ( X  \  S )  e.  J  <->  A. x  e.  ( X 
\  S ) E. z  e.  J  ( x  e.  z  /\  z  C_  ( X  \  S ) ) ) )
2421, 23mpbird 232 . 2  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  ( X  \  S
)  e.  J )
252iscld 18653 . . 3  |-  ( J  e.  Top  ->  ( S  e.  ( Clsd `  J )  <->  ( S  C_  X  /\  ( X 
\  S )  e.  J ) ) )
2610, 25syl 16 . 2  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  ( S  e.  (
Clsd `  J )  <->  ( S  C_  X  /\  ( X  \  S )  e.  J ) ) )
271, 24, 26mpbir2and 913 1  |-  ( ( J  e.  Haus  /\  S  C_  X  /\  ( Jt  S )  e.  Comp )  ->  S  e.  ( Clsd `  J ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    <-> wb 184    /\ wa 369    /\ w3a 965    = wceq 1369    e. wcel 1756   A.wral 2736   E.wrex 2737   {crab 2740    \ cdif 3346    C_ wss 3349   U.cuni 4112   ` cfv 5439  (class class class)co 6112   ↾t crest 14380   Topctop 18520   Clsdccld 18642   clsccl 18644   Hauscha 18934   Compccmp 19011
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1591  ax-4 1602  ax-5 1670  ax-6 1708  ax-7 1728  ax-8 1758  ax-9 1760  ax-10 1775  ax-11 1780  ax-12 1792  ax-13 1943  ax-ext 2423  ax-rep 4424  ax-sep 4434  ax-nul 4442  ax-pow 4491  ax-pr 4552  ax-un 6393
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3or 966  df-3an 967  df-tru 1372  df-ex 1587  df-nf 1590  df-sb 1701  df-eu 2257  df-mo 2258  df-clab 2430  df-cleq 2436  df-clel 2439  df-nfc 2577  df-ne 2622  df-ral 2741  df-rex 2742  df-reu 2743  df-rab 2745  df-v 2995  df-sbc 3208  df-csb 3310  df-dif 3352  df-un 3354  df-in 3356  df-ss 3363  df-pss 3365  df-nul 3659  df-if 3813  df-pw 3883  df-sn 3899  df-pr 3901  df-tp 3903  df-op 3905  df-uni 4113  df-int 4150  df-iun 4194  df-iin 4195  df-br 4314  df-opab 4372  df-mpt 4373  df-tr 4407  df-eprel 4653  df-id 4657  df-po 4662  df-so 4663  df-fr 4700  df-we 4702  df-ord 4743  df-on 4744  df-lim 4745  df-suc 4746  df-xp 4867  df-rel 4868  df-cnv 4869  df-co 4870  df-dm 4871  df-rn 4872  df-res 4873  df-ima 4874  df-iota 5402  df-fun 5441  df-fn 5442  df-f 5443  df-f1 5444  df-fo 5445  df-f1o 5446  df-fv 5447  df-ov 6115  df-oprab 6116  df-mpt2 6117  df-om 6498  df-1st 6598  df-2nd 6599  df-recs 6853  df-rdg 6887  df-1o 6941  df-oadd 6945  df-er 7122  df-en 7332  df-dom 7333  df-fin 7335  df-fi 7682  df-rest 14382  df-topgen 14403  df-top 18525  df-bases 18527  df-topon 18528  df-cld 18645  df-cls 18647  df-haus 18941  df-cmp 19012
This theorem is referenced by:  txkgen  19247  cmphaushmeo  19395  cnheibor  20549
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