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Theorem ishlo 22394
 Description: The predicate "is a complex Hilbert space." A Hilbert space is a Banach space which is also an inner product space, i.e. whose norm satisfies the parallelogram law. (Contributed by Steve Rodriguez, 28-Apr-2007.) (New usage is discouraged.)
Assertion
Ref Expression
ishlo

Proof of Theorem ishlo
StepHypRef Expression
1 df-hlo 22393 . 2
21elin2 3533 1
 Colors of variables: wff set class Syntax hints:   wb 178   wa 360   wcel 1726  ccphlo 22318  ccbn 22369  chlo 22392 This theorem is referenced by:  hlobn  22395  hlph  22396  cnchl  22423  ssphl  22424  hhhl  22711  hhsshl  22786 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1556  ax-5 1567  ax-17 1627  ax-9 1667  ax-8 1688  ax-6 1745  ax-7 1750  ax-11 1762  ax-12 1951  ax-ext 2419 This theorem depends on definitions:  df-bi 179  df-or 361  df-an 362  df-tru 1329  df-ex 1552  df-nf 1555  df-sb 1660  df-clab 2425  df-cleq 2431  df-clel 2434  df-nfc 2563  df-v 2960  df-in 3329  df-hlo 22393
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