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Theorem pclcmpatN 30161
Description: The set of projective subspaces is compactly atomistic: if an atom is in the projective subspace closure of a set of atoms, it also belongs to the projective subspace closure of a finite subset of that set. Analogous to Lemma 3.3.10 of [PtakPulmannova] p. 74. (Contributed by NM, 10-Sep-2013.) (New usage is discouraged.)
Hypotheses
Ref Expression
pclfin.a  |-  A  =  ( Atoms `  K )
pclfin.c  |-  U  =  ( PCl `  K
)
Assertion
Ref Expression
pclcmpatN  |-  ( ( K  e.  AtLat  /\  X  C_  A  /\  P  e.  ( U `  X
) )  ->  E. y  e.  Fin  ( y  C_  X  /\  P  e.  ( U `  y ) ) )
Distinct variable groups:    y, A    y, U    y, K    y, X    y, P

Proof of Theorem pclcmpatN
StepHypRef Expression
1 pclfin.a . . . . . 6  |-  A  =  ( Atoms `  K )
2 pclfin.c . . . . . 6  |-  U  =  ( PCl `  K
)
31, 2pclfinN 30160 . . . . 5  |-  ( ( K  e.  AtLat  /\  X  C_  A )  ->  ( U `  X )  =  U_ y  e.  ( Fin  i^i  ~P X
) ( U `  y ) )
43eleq2d 2433 . . . 4  |-  ( ( K  e.  AtLat  /\  X  C_  A )  ->  ( P  e.  ( U `  X )  <->  P  e.  U_ y  e.  ( Fin 
i^i  ~P X ) ( U `  y ) ) )
5 eliun 4011 . . . 4  |-  ( P  e.  U_ y  e.  ( Fin  i^i  ~P X ) ( U `
 y )  <->  E. y  e.  ( Fin  i^i  ~P X ) P  e.  ( U `  y
) )
64, 5syl6bb 252 . . 3  |-  ( ( K  e.  AtLat  /\  X  C_  A )  ->  ( P  e.  ( U `  X )  <->  E. y  e.  ( Fin  i^i  ~P X ) P  e.  ( U `  y
) ) )
7 elin 3446 . . . . . . 7  |-  ( y  e.  ( Fin  i^i  ~P X )  <->  ( y  e.  Fin  /\  y  e. 
~P X ) )
8 elpwi 3722 . . . . . . . 8  |-  ( y  e.  ~P X  -> 
y  C_  X )
98anim2i 552 . . . . . . 7  |-  ( ( y  e.  Fin  /\  y  e.  ~P X
)  ->  ( y  e.  Fin  /\  y  C_  X ) )
107, 9sylbi 187 . . . . . 6  |-  ( y  e.  ( Fin  i^i  ~P X )  ->  (
y  e.  Fin  /\  y  C_  X ) )
1110anim1i 551 . . . . 5  |-  ( ( y  e.  ( Fin 
i^i  ~P X )  /\  P  e.  ( U `  y ) )  -> 
( ( y  e. 
Fin  /\  y  C_  X )  /\  P  e.  ( U `  y
) ) )
12 anass 630 . . . . 5  |-  ( ( ( y  e.  Fin  /\  y  C_  X )  /\  P  e.  ( U `  y )
)  <->  ( y  e. 
Fin  /\  ( y  C_  X  /\  P  e.  ( U `  y
) ) ) )
1311, 12sylib 188 . . . 4  |-  ( ( y  e.  ( Fin 
i^i  ~P X )  /\  P  e.  ( U `  y ) )  -> 
( y  e.  Fin  /\  ( y  C_  X  /\  P  e.  ( U `  y )
) ) )
1413reximi2 2734 . . 3  |-  ( E. y  e.  ( Fin 
i^i  ~P X ) P  e.  ( U `  y )  ->  E. y  e.  Fin  ( y  C_  X  /\  P  e.  ( U `  y ) ) )
156, 14syl6bi 219 . 2  |-  ( ( K  e.  AtLat  /\  X  C_  A )  ->  ( P  e.  ( U `  X )  ->  E. y  e.  Fin  ( y  C_  X  /\  P  e.  ( U `  y ) ) ) )
16153impia 1149 1  |-  ( ( K  e.  AtLat  /\  X  C_  A  /\  P  e.  ( U `  X
) )  ->  E. y  e.  Fin  ( y  C_  X  /\  P  e.  ( U `  y ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358    /\ w3a 935    = wceq 1647    e. wcel 1715   E.wrex 2629    i^i cin 3237    C_ wss 3238   ~Pcpw 3714   U_ciun 4007   ` cfv 5358   Fincfn 7006   Atomscatm 29524   AtLatcal 29525   PClcpclN 30147
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1551  ax-5 1562  ax-17 1621  ax-9 1659  ax-8 1680  ax-13 1717  ax-14 1719  ax-6 1734  ax-7 1739  ax-11 1751  ax-12 1937  ax-ext 2347  ax-rep 4233  ax-sep 4243  ax-nul 4251  ax-pow 4290  ax-pr 4316  ax-un 4615
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 936  df-3an 937  df-tru 1324  df-ex 1547  df-nf 1550  df-sb 1654  df-eu 2221  df-mo 2222  df-clab 2353  df-cleq 2359  df-clel 2362  df-nfc 2491  df-ne 2531  df-nel 2532  df-ral 2633  df-rex 2634  df-reu 2635  df-rab 2637  df-v 2875  df-sbc 3078  df-csb 3168  df-dif 3241  df-un 3243  df-in 3245  df-ss 3252  df-pss 3254  df-nul 3544  df-if 3655  df-pw 3716  df-sn 3735  df-pr 3736  df-tp 3737  df-op 3738  df-uni 3930  df-int 3965  df-iun 4009  df-br 4126  df-opab 4180  df-mpt 4181  df-tr 4216  df-eprel 4408  df-id 4412  df-po 4417  df-so 4418  df-fr 4455  df-we 4457  df-ord 4498  df-on 4499  df-lim 4500  df-suc 4501  df-om 4760  df-xp 4798  df-rel 4799  df-cnv 4800  df-co 4801  df-dm 4802  df-rn 4803  df-res 4804  df-ima 4805  df-iota 5322  df-fun 5360  df-fn 5361  df-f 5362  df-f1 5363  df-fo 5364  df-f1o 5365  df-fv 5366  df-ov 5984  df-oprab 5985  df-mpt2 5986  df-1st 6249  df-2nd 6250  df-undef 6440  df-riota 6446  df-recs 6530  df-rdg 6565  df-1o 6621  df-oadd 6625  df-er 6802  df-en 7007  df-fin 7010  df-poset 14290  df-plt 14302  df-lub 14318  df-join 14320  df-lat 14362  df-covers 29527  df-ats 29528  df-atl 29559  df-psubsp 29763  df-pclN 30148
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