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Theorem clatglbcl 14531
Description: GLB always exists in a complete lattice. (chintcl 22824 analog.) (Contributed by NM, 14-Sep-2011.)
Hypotheses
Ref Expression
clatglbcl.b  |-  B  =  ( Base `  K
)
clatglbcl.g  |-  G  =  ( glb `  K
)
Assertion
Ref Expression
clatglbcl  |-  ( ( K  e.  CLat  /\  S  C_  B )  ->  ( G `  S )  e.  B )

Proof of Theorem clatglbcl
StepHypRef Expression
1 clatglbcl.b . . 3  |-  B  =  ( Base `  K
)
2 eqid 2435 . . 3  |-  ( lub `  K )  =  ( lub `  K )
3 clatglbcl.g . . 3  |-  G  =  ( glb `  K
)
41, 2, 3clatlem 14529 . 2  |-  ( ( K  e.  CLat  /\  S  C_  B )  ->  (
( ( lub `  K
) `  S )  e.  B  /\  ( G `  S )  e.  B ) )
54simprd 450 1  |-  ( ( K  e.  CLat  /\  S  C_  B )  ->  ( G `  S )  e.  B )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 359    = wceq 1652    e. wcel 1725    C_ wss 3312   ` cfv 5446   Basecbs 13459   lubclub 14389   glbcglb 14390   CLatccla 14526
This theorem is referenced by:  isglbd  14534  clatglb  14541  clatglble  14542  clatleglb  14543  clatglbss  14544  clatp0ex  24183  glbconN  30075  pmapglbx  30467  diaglbN  31754  diaintclN  31757  dibglbN  31865  dibintclN  31866  dihglblem2N  31993  dihglblem3N  31994  dihglblem4  31996  dihglbcpreN  31999  dihglblem6  32039  dihintcl  32043  dochval2  32051  dochcl  32052  dochvalr  32056  dochss  32064
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416  ax-sep 4322  ax-nul 4330
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2284  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-ne 2600  df-ral 2702  df-rex 2703  df-rab 2706  df-v 2950  df-sbc 3154  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-pw 3793  df-sn 3812  df-pr 3813  df-op 3815  df-uni 4008  df-br 4205  df-iota 5410  df-fv 5454  df-clat 14527
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