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Theorem dihord6b 35268
Description: Part of proof that isomorphism H is order-preserving . (Contributed by NM, 7-Mar-2014.)
Hypotheses
Ref Expression
dihord3.b  |-  B  =  ( Base `  K
)
dihord3.l  |-  .<_  =  ( le `  K )
dihord3.h  |-  H  =  ( LHyp `  K
)
dihord3.i  |-  I  =  ( ( DIsoH `  K
) `  W )
Assertion
Ref Expression
dihord6b  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  /\  X  .<_  Y )  ->  (
I `  X )  C_  ( I `  Y
) )

Proof of Theorem dihord6b
StepHypRef Expression
1 simp2r 1015 . . . 4  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  -.  X  .<_  W )
2 simp3r 1017 . . . . 5  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  Y  .<_  W )
3 simp1l 1012 . . . . . . 7  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  K  e.  HL )
4 hllat 33371 . . . . . . 7  |-  ( K  e.  HL  ->  K  e.  Lat )
53, 4syl 16 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  K  e.  Lat )
6 simp2l 1014 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  X  e.  B
)
7 simp3l 1016 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  Y  e.  B
)
8 simp1r 1013 . . . . . . 7  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  W  e.  H
)
9 dihord3.b . . . . . . . 8  |-  B  =  ( Base `  K
)
10 dihord3.h . . . . . . . 8  |-  H  =  ( LHyp `  K
)
119, 10lhpbase 34005 . . . . . . 7  |-  ( W  e.  H  ->  W  e.  B )
128, 11syl 16 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  W  e.  B
)
13 dihord3.l . . . . . . 7  |-  .<_  =  ( le `  K )
149, 13lattr 15349 . . . . . 6  |-  ( ( K  e.  Lat  /\  ( X  e.  B  /\  Y  e.  B  /\  W  e.  B
) )  ->  (
( X  .<_  Y  /\  Y  .<_  W )  ->  X  .<_  W ) )
155, 6, 7, 12, 14syl13anc 1221 . . . . 5  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  ( ( X 
.<_  Y  /\  Y  .<_  W )  ->  X  .<_  W ) )
162, 15mpan2d 674 . . . 4  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  ( X  .<_  Y  ->  X  .<_  W ) )
171, 16mtod 177 . . 3  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  -.  X  .<_  Y )
1817pm2.21d 106 . 2  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  ( X  .<_  Y  ->  ( I `  X )  C_  (
I `  Y )
) )
1918imp 429 1  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  /\  X  .<_  Y )  ->  (
I `  X )  C_  ( I `  Y
) )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 369    /\ w3a 965    = wceq 1370    e. wcel 1758    C_ wss 3439   class class class wbr 4403   ` cfv 5529   Basecbs 14296   lecple 14368   Latclat 15338   HLchlt 33358   LHypclh 33991   DIsoHcdih 35236
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1592  ax-4 1603  ax-5 1671  ax-6 1710  ax-7 1730  ax-8 1760  ax-9 1762  ax-10 1777  ax-11 1782  ax-12 1794  ax-13 1955  ax-ext 2432  ax-sep 4524  ax-nul 4532  ax-pow 4581  ax-pr 4642
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3an 967  df-tru 1373  df-ex 1588  df-nf 1591  df-sb 1703  df-eu 2266  df-mo 2267  df-clab 2440  df-cleq 2446  df-clel 2449  df-nfc 2604  df-ne 2650  df-ral 2804  df-rex 2805  df-rab 2808  df-v 3080  df-sbc 3295  df-dif 3442  df-un 3444  df-in 3446  df-ss 3453  df-nul 3749  df-if 3903  df-sn 3989  df-pr 3991  df-op 3995  df-uni 4203  df-br 4404  df-opab 4462  df-mpt 4463  df-id 4747  df-xp 4957  df-rel 4958  df-cnv 4959  df-co 4960  df-dm 4961  df-iota 5492  df-fun 5531  df-fv 5537  df-ov 6206  df-poset 15239  df-lat 15339  df-atl 33306  df-cvlat 33330  df-hlat 33359  df-lhyp 33995
This theorem is referenced by:  dihord  35272
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