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Theorem sgplpte21d1 26242
Description: The extremities belong to a segment. (For my private use only. Don't use.) (Contributed by FL, 29-Jul-2016.)
Hypotheses
Ref Expression
sgplpte.1  |-  P  =  (PPoints `  G )
sgplpte.3  |-  S  =  ( seg `  G
)
sgplpte.4  |-  ( ph  ->  G  e. Ibg )
sgplpte.5  |-  ( ph  ->  X  e.  P )
sgplpte21d1.6  |-  ( ph  ->  Y  e.  P )
Assertion
Ref Expression
sgplpte21d1  |-  ( ph  ->  X  e.  ( X S Y ) )

Proof of Theorem sgplpte21d1
StepHypRef Expression
1 sgplpte.5 . . . . . 6  |-  ( ph  ->  X  e.  P )
2 snidg 3678 . . . . . 6  |-  ( X  e.  P  ->  X  e.  { X } )
31, 2syl 15 . . . . 5  |-  ( ph  ->  X  e.  { X } )
4 sgplpte.1 . . . . . 6  |-  P  =  (PPoints `  G )
5 sgplpte.3 . . . . . 6  |-  S  =  ( seg `  G
)
6 sgplpte.4 . . . . . 6  |-  ( ph  ->  G  e. Ibg )
74, 5, 6, 1sgplpte22 26241 . . . . 5  |-  ( ph  ->  ( X S X )  =  { X } )
83, 7eleqtrrd 2373 . . . 4  |-  ( ph  ->  X  e.  ( X S X ) )
9 oveq2 5882 . . . . 5  |-  ( Y  =  X  ->  ( X S Y )  =  ( X S X ) )
109eleq2d 2363 . . . 4  |-  ( Y  =  X  ->  ( X  e.  ( X S Y )  <->  X  e.  ( X S X ) ) )
118, 10syl5ibr 212 . . 3  |-  ( Y  =  X  ->  ( ph  ->  X  e.  ( X S Y ) ) )
1211eqcoms 2299 . 2  |-  ( X  =  Y  ->  ( ph  ->  X  e.  ( X S Y ) ) )
131adantl 452 . . . 4  |-  ( ( X  =/=  Y  /\  ph )  ->  X  e.  P )
146adantl 452 . . . . 5  |-  ( ( X  =/=  Y  /\  ph )  ->  G  e. Ibg )
15 eqid 2296 . . . . 5  |-  (btw `  G )  =  (btw
`  G )
16 sgplpte21d1.6 . . . . . 6  |-  ( ph  ->  Y  e.  P )
1716adantl 452 . . . . 5  |-  ( ( X  =/=  Y  /\  ph )  ->  Y  e.  P )
18 simpl 443 . . . . 5  |-  ( ( X  =/=  Y  /\  ph )  ->  X  =/=  Y )
194, 5, 14, 13, 15, 17, 18sgplpte21d 26239 . . . 4  |-  ( ( X  =/=  Y  /\  ph )  ->  ( ( X  e.  P  /\  ( X  e.  ( X (btw `  G ) Y )  \/  X  =  X  \/  X  =  Y ) )  ->  X  e.  ( X S Y ) ) )
20 eqid 2296 . . . . 5  |-  X  =  X
21 simpr 447 . . . . . 6  |-  ( ( X  =  X  /\  X  e.  P )  ->  X  e.  P )
22 3mix2 1125 . . . . . . 7  |-  ( X  =  X  ->  ( X  e.  ( X
(btw `  G ) Y )  \/  X  =  X  \/  X  =  Y ) )
2322adantr 451 . . . . . 6  |-  ( ( X  =  X  /\  X  e.  P )  ->  ( X  e.  ( X (btw `  G
) Y )  \/  X  =  X  \/  X  =  Y )
)
24 pm2.27 35 . . . . . 6  |-  ( ( X  e.  P  /\  ( X  e.  ( X (btw `  G ) Y )  \/  X  =  X  \/  X  =  Y ) )  -> 
( ( ( X  e.  P  /\  ( X  e.  ( X
(btw `  G ) Y )  \/  X  =  X  \/  X  =  Y ) )  ->  X  e.  ( X S Y ) )  ->  X  e.  ( X S Y ) ) )
2521, 23, 24syl2anc 642 . . . . 5  |-  ( ( X  =  X  /\  X  e.  P )  ->  ( ( ( X  e.  P  /\  ( X  e.  ( X
(btw `  G ) Y )  \/  X  =  X  \/  X  =  Y ) )  ->  X  e.  ( X S Y ) )  ->  X  e.  ( X S Y ) ) )
2620, 25mpan 651 . . . 4  |-  ( X  e.  P  ->  (
( ( X  e.  P  /\  ( X  e.  ( X (btw
`  G ) Y )  \/  X  =  X  \/  X  =  Y ) )  ->  X  e.  ( X S Y ) )  ->  X  e.  ( X S Y ) ) )
2713, 19, 26sylc 56 . . 3  |-  ( ( X  =/=  Y  /\  ph )  ->  X  e.  ( X S Y ) )
2827ex 423 . 2  |-  ( X  =/=  Y  ->  ( ph  ->  X  e.  ( X S Y ) ) )
2912, 28pm2.61ine 2535 1  |-  ( ph  ->  X  e.  ( X S Y ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358    \/ w3o 933    = wceq 1632    e. wcel 1696    =/= wne 2459   {csn 3653   ` cfv 5271  (class class class)co 5874  PPointscpoints 26159  btwcbtw 26209  Ibgcibg 26210   segcseg 26233
This theorem is referenced by:  sgplpte21d2  26243
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-13 1698  ax-14 1700  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277  ax-rep 4147  ax-sep 4157  ax-nul 4165  ax-pow 4204  ax-pr 4230  ax-un 4528
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-eu 2160  df-mo 2161  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-ne 2461  df-ral 2561  df-rex 2562  df-reu 2563  df-rab 2565  df-v 2803  df-sbc 3005  df-csb 3095  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3469  df-if 3579  df-pw 3640  df-sn 3659  df-pr 3660  df-op 3662  df-uni 3844  df-iun 3923  df-br 4040  df-opab 4094  df-mpt 4095  df-id 4325  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-rn 4716  df-res 4717  df-ima 4718  df-iota 5235  df-fun 5273  df-fn 5274  df-f 5275  df-f1 5276  df-fo 5277  df-f1o 5278  df-fv 5279  df-ov 5877  df-oprab 5878  df-mpt2 5879  df-1st 6138  df-2nd 6139  df-seg2 26234
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