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Theorem bhp2a 26279
Description: The half planes delimited by  M. (For my private use only. Don't use.) (Contributed by FL, 16-Sep-2016.)
Hypotheses
Ref Expression
abhp.1  |-  ( ph  ->  G  e. Ibg )
abhp.2  |-  ( ph  ->  M  e.  L )
abhp.3  |-  P  =  (PPoints `  G )
abhp.4  |-  .~  =  ( (ss `  G ) `
 M )
abhp.5  |-  L  =  (PLines `  G )
Assertion
Ref Expression
bhp2a  |-  ( ph  ->  ( (Halfplane `  G
) `  M )  =  { h  |  E. x  e.  ( P  \  M ) ( h  =  [ x ]  .~  \/  h  =  ( ( P  \  M
)  \  [ x ]  .~  ) ) } )
Distinct variable groups:    x, h,  .~    h, M, x    P, h, x    ph, x
Allowed substitution hints:    ph( h)    G( x, h)    L( x, h)

Proof of Theorem bhp2a
Dummy variable  z is distinct from all other variables.
StepHypRef Expression
1 abhp.1 . . . 4  |-  ( ph  ->  G  e. Ibg )
2 abhp.2 . . . 4  |-  ( ph  ->  M  e.  L )
3 abhp.3 . . . 4  |-  P  =  (PPoints `  G )
4 abhp.4 . . . 4  |-  .~  =  ( (ss `  G ) `
 M )
5 abhp.5 . . . 4  |-  L  =  (PLines `  G )
61, 2, 3, 4, 5abhp 26276 . . 3  |-  ( ph  ->  ( z  e.  ( (Halfplane `  G ) `  M )  <->  E. x  e.  ( P  \  M
) ( z  =  [ x ]  .~  \/  z  =  (
( P  \  M
)  \  [ x ]  .~  ) ) ) )
7 vex 2804 . . . 4  |-  z  e. 
_V
8 eqeq1 2302 . . . . . . 7  |-  ( h  =  z  ->  (
h  =  [ x ]  .~  <->  z  =  [
x ]  .~  )
)
98adantr 451 . . . . . 6  |-  ( ( h  =  z  /\  x  e.  ( P  \  M ) )  -> 
( h  =  [
x ]  .~  <->  z  =  [ x ]  .~  ) )
10 eqeq1 2302 . . . . . . 7  |-  ( h  =  z  ->  (
h  =  ( ( P  \  M ) 
\  [ x ]  .~  )  <->  z  =  ( ( P  \  M
)  \  [ x ]  .~  ) ) )
1110adantr 451 . . . . . 6  |-  ( ( h  =  z  /\  x  e.  ( P  \  M ) )  -> 
( h  =  ( ( P  \  M
)  \  [ x ]  .~  )  <->  z  =  ( ( P  \  M )  \  [
x ]  .~  )
) )
129, 11orbi12d 690 . . . . 5  |-  ( ( h  =  z  /\  x  e.  ( P  \  M ) )  -> 
( ( h  =  [ x ]  .~  \/  h  =  (
( P  \  M
)  \  [ x ]  .~  ) )  <->  ( z  =  [ x ]  .~  \/  z  =  (
( P  \  M
)  \  [ x ]  .~  ) ) ) )
1312rexbidva 2573 . . . 4  |-  ( h  =  z  ->  ( E. x  e.  ( P  \  M ) ( h  =  [ x ]  .~  \/  h  =  ( ( P  \  M )  \  [
x ]  .~  )
)  <->  E. x  e.  ( P  \  M ) ( z  =  [
x ]  .~  \/  z  =  ( ( P  \  M )  \  [ x ]  .~  ) ) ) )
147, 13elab 2927 . . 3  |-  ( z  e.  { h  |  E. x  e.  ( P  \  M ) ( h  =  [
x ]  .~  \/  h  =  ( ( P  \  M )  \  [ x ]  .~  ) ) }  <->  E. x  e.  ( P  \  M
) ( z  =  [ x ]  .~  \/  z  =  (
( P  \  M
)  \  [ x ]  .~  ) ) )
156, 14syl6bbr 254 . 2  |-  ( ph  ->  ( z  e.  ( (Halfplane `  G ) `  M )  <->  z  e.  { h  |  E. x  e.  ( P  \  M
) ( h  =  [ x ]  .~  \/  h  =  (
( P  \  M
)  \  [ x ]  .~  ) ) } ) )
1615eqrdv 2294 1  |-  ( ph  ->  ( (Halfplane `  G
) `  M )  =  { h  |  E. x  e.  ( P  \  M ) ( h  =  [ x ]  .~  \/  h  =  ( ( P  \  M
)  \  [ x ]  .~  ) ) } )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 176    \/ wo 357    /\ wa 358    = wceq 1632    e. wcel 1696   {cab 2282   E.wrex 2557    \ cdif 3162   ` cfv 5271   [cec 6674  PPointscpoints 26159  PLinescplines 26161  Ibgcibg 26210  sscsas 26265  Halfplanechalfp 26273
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-nel 2462  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-tp 3661  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-riota 6320  df-er 6676  df-ec 6678  df-qs 6682  df-ig2 26164  df-li 26180  df-col 26194  df-ibg2 26212  df-seg2 26234  df-sside 26266  df-halfplane 26274
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