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Theorem dihord6b 31450
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 982 . . . 4  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  -.  X  .<_  W )
2 simp3r 984 . . . . 5  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  Y  .<_  W )
3 simp1l 979 . . . . . . 7  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  K  e.  HL )
4 hllat 29553 . . . . . . 7  |-  ( K  e.  HL  ->  K  e.  Lat )
53, 4syl 15 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  K  e.  Lat )
6 simp2l 981 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  X  e.  B
)
7 simp3l 983 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  Y  e.  B
)
8 simp1r 980 . . . . . . 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 30187 . . . . . . 7  |-  ( W  e.  H  ->  W  e.  B )
128, 11syl 15 . . . . . 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 14162 . . . . . 6  |-  ( ( K  e.  Lat  /\  ( X  e.  B  /\  Y  e.  B  /\  W  e.  B
) )  ->  (
( X  .<_  Y  /\  Y  .<_  W )  ->  X  .<_  W ) )
155, 6, 7, 12, 14syl13anc 1184 . . . . 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 655 . . . 4  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  ( X  .<_  Y  ->  X  .<_  W ) )
171, 16mtod 168 . . 3  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( X  e.  B  /\  -.  X  .<_  W )  /\  ( Y  e.  B  /\  Y  .<_  W ) )  ->  -.  X  .<_  Y )
1817pm2.21d 98 . 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 418 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 set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 358    /\ w3a 934    = wceq 1623    e. wcel 1684    C_ wss 3152   class class class wbr 4023   ` cfv 5255   Basecbs 13148   lecple 13215   Latclat 14151   HLchlt 29540   LHypclh 30173   DIsoHcdih 31418
This theorem is referenced by:  dihord  31454
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1533  ax-5 1544  ax-17 1603  ax-9 1635  ax-8 1643  ax-13 1686  ax-14 1688  ax-6 1703  ax-7 1708  ax-11 1715  ax-12 1866  ax-ext 2264  ax-sep 4141  ax-nul 4149  ax-pow 4188  ax-pr 4214
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1529  df-nf 1532  df-sb 1630  df-eu 2147  df-mo 2148  df-clab 2270  df-cleq 2276  df-clel 2279  df-nfc 2408  df-ne 2448  df-ral 2548  df-rex 2549  df-rab 2552  df-v 2790  df-sbc 2992  df-dif 3155  df-un 3157  df-in 3159  df-ss 3166  df-nul 3456  df-if 3566  df-sn 3646  df-pr 3647  df-op 3649  df-uni 3828  df-br 4024  df-opab 4078  df-mpt 4079  df-id 4309  df-xp 4695  df-rel 4696  df-cnv 4697  df-co 4698  df-dm 4699  df-iota 5219  df-fun 5257  df-fv 5263  df-ov 5861  df-poset 14080  df-lat 14152  df-atl 29488  df-cvlat 29512  df-hlat 29541  df-lhyp 30177
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