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Theorem braval 22354
Description: A bra-ket juxtaposition, expressed as  <. A  |  B >. in Dirac notation, equals the inner product of the vectors. Based on definition of bra in [Prugovecki] p. 186. (Contributed by NM, 15-May-2006.) (Revised by Mario Carneiro, 17-Nov-2013.) (New usage is discouraged.)
Assertion
Ref Expression
braval  |-  ( ( A  e.  ~H  /\  B  e.  ~H )  ->  ( ( bra `  A
) `  B )  =  ( B  .ih  A ) )

Proof of Theorem braval
StepHypRef Expression
1 brafval 22353 . . 3  |-  ( A  e.  ~H  ->  ( bra `  A )  =  ( x  e.  ~H  |->  ( x  .ih  A ) ) )
21fveq1d 5379 . 2  |-  ( A  e.  ~H  ->  (
( bra `  A
) `  B )  =  ( ( x  e.  ~H  |->  ( x 
.ih  A ) ) `
 B ) )
3 oveq1 5717 . . 3  |-  ( x  =  B  ->  (
x  .ih  A )  =  ( B  .ih  A ) )
4 eqid 2253 . . 3  |-  ( x  e.  ~H  |->  ( x 
.ih  A ) )  =  ( x  e. 
~H  |->  ( x  .ih  A ) )
5 ovex 5735 . . 3  |-  ( B 
.ih  A )  e. 
_V
63, 4, 5fvmpt 5454 . 2  |-  ( B  e.  ~H  ->  (
( x  e.  ~H  |->  ( x  .ih  A ) ) `  B )  =  ( B  .ih  A ) )
72, 6sylan9eq 2305 1  |-  ( ( A  e.  ~H  /\  B  e.  ~H )  ->  ( ( bra `  A
) `  B )  =  ( B  .ih  A ) )
Colors of variables: wff set class
Syntax hints:    -> wi 6    /\ wa 360    = wceq 1619    e. wcel 1621    e. cmpt 3974   ` cfv 4592  (class class class)co 5710   ~Hchil 21329    .ih csp 21332   bracbr 21366
This theorem is referenced by:  braadd  22355  bramul  22356  brafnmul  22361  branmfn  22515  rnbra  22517  bra11  22518  cnvbraval  22520  kbass1  22526  kbass2  22527  kbass6  22531
This theorem was proved from axioms:  ax-1 7  ax-2 8  ax-3 9  ax-mp 10  ax-5 1533  ax-6 1534  ax-7 1535  ax-gen 1536  ax-8 1623  ax-11 1624  ax-13 1625  ax-14 1626  ax-17 1628  ax-12o 1664  ax-10 1678  ax-9 1684  ax-4 1692  ax-16 1926  ax-ext 2234  ax-rep 4028  ax-sep 4038  ax-nul 4046  ax-pr 4108  ax-un 4403  ax-hilex 21409
This theorem depends on definitions:  df-bi 179  df-or 361  df-an 362  df-3an 941  df-tru 1315  df-ex 1538  df-nf 1540  df-sb 1883  df-eu 2118  df-mo 2119  df-clab 2240  df-cleq 2246  df-clel 2249  df-nfc 2374  df-ne 2414  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2516  df-v 2729  df-sbc 2922  df-csb 3010  df-dif 3081  df-un 3083  df-in 3085  df-ss 3089  df-nul 3363  df-if 3471  df-sn 3550  df-pr 3551  df-op 3553  df-uni 3728  df-iun 3805  df-br 3921  df-opab 3975  df-mpt 3976  df-id 4202  df-xp 4594  df-rel 4595  df-cnv 4596  df-co 4597  df-dm 4598  df-rn 4599  df-res 4600  df-ima 4601  df-fun 4602  df-fn 4603  df-f 4604  df-f1 4605  df-fo 4606  df-f1o 4607  df-fv 4608  df-ov 5713  df-bra 22260
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