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From: hoffman@hdsvx1.UUCP (Richard Hoffman)
Newsgroups: net.lang
Subject: Re: Re: compound statements ( side note )
Message-ID: <307@hdsvx1.UUCP>
Date: Mon, 21-Jul-86 11:42:46 EDT
Article-I.D.: hdsvx1.307
Posted: Mon Jul 21 11:42:46 1986
Date-Received: Thu, 24-Jul-86 00:42:58 EDT
References: <873@ucbcad.BERKELEY.EDU>
Organization: Schlumberger-HDS, Houston TX
Lines: 21

> According to quantum physicists, < > are brackets.  The < is called
> a "bra" and the > is a "ket"...
> 
> 	Wayne

Brackets they may be (though I have usually heard them called "angle"
brackets, to distinguish them from "square" brackets -- "[]"), but the
bra and the ket refer not to the symbol but to the entities they enclose.

For example, in the term "<x|F|y>", the "ket" is |y>, a dual vector which
is operated upon by F and then matrix multiplied with the "bra" vector
<x|.

Personally, I think we should start compound statements with
"this_is_the_start_of_a_compound_statement" and end them with
"tnemetats_dnuopmoc_a_fo_trats_eht_si_siht".  :-) ;-> :-).
-- 
 Richard Hoffman                | "If you take a starving dog from the street
 Schlumberger Well Services     | and make him prosperous, the dog will not
 hoffman%hdsvx1@slb-doll.csnet  | bite you.  This is the principle difference
 PO Box 2175, Houston, TX 77252 | between a dog and a man." -- M. TWAIN