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Theorem cvmcov2 29786
Description: The covering map property can be restricted to an open subset. (Contributed by Mario Carneiro, 7-Jul-2015.)
Hypothesis
Ref Expression
cvmcov.1  |-  S  =  ( k  e.  J  |->  { s  e.  ( ~P C  \  { (/)
} )  |  ( U. s  =  ( `' F " k )  /\  A. u  e.  s  ( A. v  e.  ( s  \  {
u } ) ( u  i^i  v )  =  (/)  /\  ( F  |`  u )  e.  ( ( Ct  u )
Homeo ( Jt  k ) ) ) ) } )
Assertion
Ref Expression
cvmcov2  |-  ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  ->  E. x  e.  ~P  U ( P  e.  x  /\  ( S `  x )  =/=  (/) ) )
Distinct variable groups:    k, s, u, v, x, C    k, F, s, u, v, x    P, k, x    k, J, s, u, v, x   
x, S    U, k,
s, u, v, x
Allowed substitution hints:    P( v, u, s)    S( v, u, k, s)

Proof of Theorem cvmcov2
Dummy variable  y is distinct from all other variables.
StepHypRef Expression
1 simp1 1005 . . 3  |-  ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  ->  F  e.  ( C CovMap  J ) )
2 simp3 1007 . . . 4  |-  ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  ->  P  e.  U )
3 simp2 1006 . . . 4  |-  ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  ->  U  e.  J )
4 elunii 4227 . . . 4  |-  ( ( P  e.  U  /\  U  e.  J )  ->  P  e.  U. J
)
52, 3, 4syl2anc 665 . . 3  |-  ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  ->  P  e.  U. J )
6 cvmcov.1 . . . 4  |-  S  =  ( k  e.  J  |->  { s  e.  ( ~P C  \  { (/)
} )  |  ( U. s  =  ( `' F " k )  /\  A. u  e.  s  ( A. v  e.  ( s  \  {
u } ) ( u  i^i  v )  =  (/)  /\  ( F  |`  u )  e.  ( ( Ct  u )
Homeo ( Jt  k ) ) ) ) } )
7 eqid 2429 . . . 4  |-  U. J  =  U. J
86, 7cvmcov 29774 . . 3  |-  ( ( F  e.  ( C CovMap  J )  /\  P  e.  U. J )  ->  E. y  e.  J  ( P  e.  y  /\  ( S `  y
)  =/=  (/) ) )
91, 5, 8syl2anc 665 . 2  |-  ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  ->  E. y  e.  J  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) )
10 inss2 3689 . . . . 5  |-  ( y  i^i  U )  C_  U
11 vex 3090 . . . . . . 7  |-  y  e. 
_V
1211inex1 4566 . . . . . 6  |-  ( y  i^i  U )  e. 
_V
1312elpw 3991 . . . . 5  |-  ( ( y  i^i  U )  e.  ~P U  <->  ( y  i^i  U )  C_  U
)
1410, 13mpbir 212 . . . 4  |-  ( y  i^i  U )  e. 
~P U
1514a1i 11 . . 3  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  ( y  i^i  U )  e.  ~P U )
16 simprrl 772 . . . 4  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  P  e.  y )
172adantr 466 . . . 4  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  P  e.  U )
1816, 17elind 3656 . . 3  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  P  e.  ( y  i^i  U
) )
19 simprrr 773 . . . 4  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  ( S `  y )  =/=  (/) )
201adantr 466 . . . . 5  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  F  e.  ( C CovMap  J ) )
21 cvmtop2 29772 . . . . . . 7  |-  ( F  e.  ( C CovMap  J
)  ->  J  e.  Top )
2220, 21syl 17 . . . . . 6  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  J  e.  Top )
23 simprl 762 . . . . . 6  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  y  e.  J )
243adantr 466 . . . . . 6  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  U  e.  J )
25 inopn 19860 . . . . . 6  |-  ( ( J  e.  Top  /\  y  e.  J  /\  U  e.  J )  ->  ( y  i^i  U
)  e.  J )
2622, 23, 24, 25syl3anc 1264 . . . . 5  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  ( y  i^i  U )  e.  J
)
27 inss1 3688 . . . . . 6  |-  ( y  i^i  U )  C_  y
2827a1i 11 . . . . 5  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  ( y  i^i  U )  C_  y
)
296cvmsss2 29785 . . . . 5  |-  ( ( F  e.  ( C CovMap  J )  /\  (
y  i^i  U )  e.  J  /\  (
y  i^i  U )  C_  y )  ->  (
( S `  y
)  =/=  (/)  ->  ( S `  ( y  i^i  U ) )  =/=  (/) ) )
3020, 26, 28, 29syl3anc 1264 . . . 4  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  ( ( S `  y )  =/=  (/)  ->  ( S `  ( y  i^i  U
) )  =/=  (/) ) )
3119, 30mpd 15 . . 3  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  ( S `  ( y  i^i  U
) )  =/=  (/) )
32 eleq2 2502 . . . . 5  |-  ( x  =  ( y  i^i 
U )  ->  ( P  e.  x  <->  P  e.  ( y  i^i  U
) ) )
33 fveq2 5881 . . . . . 6  |-  ( x  =  ( y  i^i 
U )  ->  ( S `  x )  =  ( S `  ( y  i^i  U
) ) )
3433neeq1d 2708 . . . . 5  |-  ( x  =  ( y  i^i 
U )  ->  (
( S `  x
)  =/=  (/)  <->  ( S `  ( y  i^i  U
) )  =/=  (/) ) )
3532, 34anbi12d 715 . . . 4  |-  ( x  =  ( y  i^i 
U )  ->  (
( P  e.  x  /\  ( S `  x
)  =/=  (/) )  <->  ( P  e.  ( y  i^i  U
)  /\  ( S `  ( y  i^i  U
) )  =/=  (/) ) ) )
3635rspcev 3188 . . 3  |-  ( ( ( y  i^i  U
)  e.  ~P U  /\  ( P  e.  ( y  i^i  U )  /\  ( S `  ( y  i^i  U
) )  =/=  (/) ) )  ->  E. x  e.  ~P  U ( P  e.  x  /\  ( S `
 x )  =/=  (/) ) )
3715, 18, 31, 36syl12anc 1262 . 2  |-  ( ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  /\  ( y  e.  J  /\  ( P  e.  y  /\  ( S `  y )  =/=  (/) ) ) )  ->  E. x  e.  ~P  U ( P  e.  x  /\  ( S `  x )  =/=  (/) ) )
389, 37rexlimddv 2928 1  |-  ( ( F  e.  ( C CovMap  J )  /\  U  e.  J  /\  P  e.  U )  ->  E. x  e.  ~P  U ( P  e.  x  /\  ( S `  x )  =/=  (/) ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    /\ wa 370    /\ w3a 982    = wceq 1437    e. wcel 1870    =/= wne 2625   A.wral 2782   E.wrex 2783   {crab 2786    \ cdif 3439    i^i cin 3441    C_ wss 3442   (/)c0 3767   ~Pcpw 3985   {csn 4002   U.cuni 4222    |-> cmpt 4484   `'ccnv 4853    |` cres 4856   "cima 4857   ` cfv 5601  (class class class)co 6305   ↾t crest 15278   Topctop 19848   Homeochmeo 20699   CovMap ccvm 29766
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1665  ax-4 1678  ax-5 1751  ax-6 1797  ax-7 1841  ax-8 1872  ax-9 1874  ax-10 1889  ax-11 1894  ax-12 1907  ax-13 2055  ax-ext 2407  ax-rep 4538  ax-sep 4548  ax-nul 4556  ax-pow 4603  ax-pr 4661  ax-un 6597
This theorem depends on definitions:  df-bi 188  df-or 371  df-an 372  df-3or 983  df-3an 984  df-tru 1440  df-ex 1660  df-nf 1664  df-sb 1790  df-eu 2270  df-mo 2271  df-clab 2415  df-cleq 2421  df-clel 2424  df-nfc 2579  df-ne 2627  df-ral 2787  df-rex 2788  df-reu 2789  df-rab 2791  df-v 3089  df-sbc 3306  df-csb 3402  df-dif 3445  df-un 3447  df-in 3449  df-ss 3456  df-pss 3458  df-nul 3768  df-if 3916  df-pw 3987  df-sn 4003  df-pr 4005  df-tp 4007  df-op 4009  df-uni 4223  df-int 4259  df-iun 4304  df-br 4427  df-opab 4485  df-mpt 4486  df-tr 4521  df-eprel 4765  df-id 4769  df-po 4775  df-so 4776  df-fr 4813  df-we 4815  df-xp 4860  df-rel 4861  df-cnv 4862  df-co 4863  df-dm 4864  df-rn 4865  df-res 4866  df-ima 4867  df-pred 5399  df-ord 5445  df-on 5446  df-lim 5447  df-suc 5448  df-iota 5565  df-fun 5603  df-fn 5604  df-f 5605  df-f1 5606  df-fo 5607  df-f1o 5608  df-fv 5609  df-ov 6308  df-oprab 6309  df-mpt2 6310  df-om 6707  df-1st 6807  df-2nd 6808  df-wrecs 7036  df-recs 7098  df-rdg 7136  df-oadd 7194  df-er 7371  df-map 7482  df-en 7578  df-fin 7581  df-fi 7931  df-rest 15280  df-topgen 15301  df-top 19852  df-bases 19853  df-topon 19854  df-cn 20174  df-hmeo 20701  df-cvm 29767
This theorem is referenced by: (None)
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