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Theorem hvsubcan2 22425
Description: Cancellation law for vector addition. (Contributed by NM, 18-May-2005.) (New usage is discouraged.)
Assertion
Ref Expression
hvsubcan2  |-  ( ( A  e.  ~H  /\  B  e.  ~H  /\  C  e.  ~H )  ->  (
( A  -h  C
)  =  ( B  -h  C )  <->  A  =  B ) )

Proof of Theorem hvsubcan2
StepHypRef Expression
1 hvsubcl 22368 . . . . 5  |-  ( ( C  e.  ~H  /\  A  e.  ~H )  ->  ( C  -h  A
)  e.  ~H )
213adant3 977 . . . 4  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  ( C  -h  A )  e. 
~H )
3 hvsubcl 22368 . . . . 5  |-  ( ( C  e.  ~H  /\  B  e.  ~H )  ->  ( C  -h  B
)  e.  ~H )
433adant2 976 . . . 4  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  ( C  -h  B )  e. 
~H )
5 neg1cn 9999 . . . . . 6  |-  -u 1  e.  CC
6 ax-1cn 8981 . . . . . . 7  |-  1  e.  CC
7 ax-1ne0 8992 . . . . . . 7  |-  1  =/=  0
86, 7negne0i 9307 . . . . . 6  |-  -u 1  =/=  0
95, 8pm3.2i 442 . . . . 5  |-  ( -u
1  e.  CC  /\  -u 1  =/=  0 )
10 hvmulcan 22422 . . . . 5  |-  ( ( ( -u 1  e.  CC  /\  -u 1  =/=  0 )  /\  ( C  -h  A )  e. 
~H  /\  ( C  -h  B )  e.  ~H )  ->  ( ( -u
1  .h  ( C  -h  A ) )  =  ( -u 1  .h  ( C  -h  B
) )  <->  ( C  -h  A )  =  ( C  -h  B ) ) )
119, 10mp3an1 1266 . . . 4  |-  ( ( ( C  -h  A
)  e.  ~H  /\  ( C  -h  B
)  e.  ~H )  ->  ( ( -u 1  .h  ( C  -h  A
) )  =  (
-u 1  .h  ( C  -h  B ) )  <-> 
( C  -h  A
)  =  ( C  -h  B ) ) )
122, 4, 11syl2anc 643 . . 3  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  (
( -u 1  .h  ( C  -h  A ) )  =  ( -u 1  .h  ( C  -h  B
) )  <->  ( C  -h  A )  =  ( C  -h  B ) ) )
13 hvnegdi 22417 . . . . 5  |-  ( ( C  e.  ~H  /\  A  e.  ~H )  ->  ( -u 1  .h  ( C  -h  A
) )  =  ( A  -h  C ) )
14133adant3 977 . . . 4  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  ( -u 1  .h  ( C  -h  A ) )  =  ( A  -h  C ) )
15 hvnegdi 22417 . . . . 5  |-  ( ( C  e.  ~H  /\  B  e.  ~H )  ->  ( -u 1  .h  ( C  -h  B
) )  =  ( B  -h  C ) )
16153adant2 976 . . . 4  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  ( -u 1  .h  ( C  -h  B ) )  =  ( B  -h  C ) )
1714, 16eqeq12d 2401 . . 3  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  (
( -u 1  .h  ( C  -h  A ) )  =  ( -u 1  .h  ( C  -h  B
) )  <->  ( A  -h  C )  =  ( B  -h  C ) ) )
18 hvsubcan 22424 . . 3  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  (
( C  -h  A
)  =  ( C  -h  B )  <->  A  =  B ) )
1912, 17, 183bitr3d 275 . 2  |-  ( ( C  e.  ~H  /\  A  e.  ~H  /\  B  e.  ~H )  ->  (
( A  -h  C
)  =  ( B  -h  C )  <->  A  =  B ) )
20193coml 1160 1  |-  ( ( A  e.  ~H  /\  B  e.  ~H  /\  C  e.  ~H )  ->  (
( A  -h  C
)  =  ( B  -h  C )  <->  A  =  B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 177    /\ wa 359    /\ w3a 936    = wceq 1649    e. wcel 1717    =/= wne 2550  (class class class)co 6020   CCcc 8921   0cc0 8923   1c1 8924   -ucneg 9224   ~Hchil 22270    .h csm 22272    -h cmv 22276
This theorem is referenced by:  hvaddsub4  22428
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1552  ax-5 1563  ax-17 1623  ax-9 1661  ax-8 1682  ax-13 1719  ax-14 1721  ax-6 1736  ax-7 1741  ax-11 1753  ax-12 1939  ax-ext 2368  ax-sep 4271  ax-nul 4279  ax-pow 4318  ax-pr 4344  ax-un 4641  ax-resscn 8980  ax-1cn 8981  ax-icn 8982  ax-addcl 8983  ax-addrcl 8984  ax-mulcl 8985  ax-mulrcl 8986  ax-mulcom 8987  ax-addass 8988  ax-mulass 8989  ax-distr 8990  ax-i2m1 8991  ax-1ne0 8992  ax-1rid 8993  ax-rnegex 8994  ax-rrecex 8995  ax-cnre 8996  ax-pre-lttri 8997  ax-pre-lttrn 8998  ax-pre-ltadd 8999  ax-pre-mulgt0 9000  ax-hfvadd 22351  ax-hvcom 22352  ax-hvass 22353  ax-hv0cl 22354  ax-hvaddid 22355  ax-hfvmul 22356  ax-hvmulid 22357  ax-hvmulass 22358  ax-hvdistr1 22359  ax-hvdistr2 22360  ax-hvmul0 22361
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3or 937  df-3an 938  df-tru 1325  df-ex 1548  df-nf 1551  df-sb 1656  df-eu 2242  df-mo 2243  df-clab 2374  df-cleq 2380  df-clel 2383  df-nfc 2512  df-ne 2552  df-nel 2553  df-ral 2654  df-rex 2655  df-reu 2656  df-rmo 2657  df-rab 2658  df-v 2901  df-sbc 3105  df-csb 3195  df-dif 3266  df-un 3268  df-in 3270  df-ss 3277  df-nul 3572  df-if 3683  df-pw 3744  df-sn 3763  df-pr 3764  df-op 3766  df-uni 3958  df-iun 4037  df-br 4154  df-opab 4208  df-mpt 4209  df-id 4439  df-po 4444  df-so 4445  df-xp 4824  df-rel 4825  df-cnv 4826  df-co 4827  df-dm 4828  df-rn 4829  df-res 4830  df-ima 4831  df-iota 5358  df-fun 5396  df-fn 5397  df-f 5398  df-f1 5399  df-fo 5400  df-f1o 5401  df-fv 5402  df-ov 6023  df-oprab 6024  df-mpt2 6025  df-riota 6485  df-er 6841  df-en 7046  df-dom 7047  df-sdom 7048  df-pnf 9055  df-mnf 9056  df-xr 9057  df-ltxr 9058  df-le 9059  df-sub 9225  df-neg 9226  df-div 9610  df-hvsub 22322
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