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Conference vaxuum::document_ft

Title:DOCUMENT T1.0
Notice:**New notesfile (DOCUMENT.NOTE) now available (see note 897)**
Moderator:CLOSET::ADLER
Created:Mon Feb 09 1987
Last Modified:Thu Oct 31 1991
Last Successful Update:Fri Jun 06 1997
Number of topics:897
Total number of notes:4397

205.0. "defining tag for ^ over lambda" by PICA::HIDER (Paul Hider) Mon Apr 06 1987 21:56

  I'm trying to define a tag that will let me put a "^" over lambda.
  I'm not sure how one is supposed to define tags, don't tell me I'm not! :-(

  I've seen tags defined with ^T's, ^B's and ^E's (the control characters)
  but that didn't do much for me.

  What I have here works for the first case, but in the second I get an
  error "more than 1 arguments supplied to tag <SUBSCRIPT>".

  Many thanks for any help..
                                ..Paul

<define>(HAT\|\hat{$1}&)

<math>(display)
<hat>(<math_char>(lambda))
<endmath>

<math>(display)
x<superscript>(<hat>(<math_char>(lambda)))
<endmath>
T.RTitleUserPersonal
Name
DateLines
205.1<hat> in next releaseCLOSET::ANKLAMTue Apr 07 1987 12:392
    
    
205.2Shouldn't that be <CIRCUMFLEX> ?COOKIE::WITHERSLe plus ca change...Thu Apr 09 1987 16:081
    
205.3why can't it be hat?CLOSET::ANKLAMThu Apr 09 1987 19:248
    
    I tended to use the terms that were familiar to existing TeX math
    users on the assumption that TeX's math was developed with
    familiarity of common terms. "hat" is what Knuth called it. Is this
    too cute?
    
    patti
    
205.4A tip of the <hat> to <circumflex>!CLOSET::KAIKOWThu Apr 09 1987 20:175
I forgot what the official name of the character is in ISO 646, it
used to be "circumflex accent" (may have changed in the latest revision to the 
ISO standards), however, it is silly to use anything other than <CIRCUMFLEX>, 
i.e. remove the <hat>.
205.5hat vote hereCOOKIE::JOHNSTONThu Apr 09 1987 21:543
I vote for "hat"; *anything* to save keystrokes!

Rose
205.6Another vote for <CIRCUMFLEX>CRAYON::GENTParty gone out of bounds -- B52'sFri Apr 10 1987 11:554
    I vote for <CIRCUMFLEX>. Although I don't like entering long tag
    names, circumflex is the standard term (in my dictionary at least).
    
    --Andrew
205.7Did you really want to ask?3D::BOYACKpithy...pithy...pithyFri Apr 10 1987 12:276
    As a two-finger fury I hate typing, but it seems right to go with
    <circumflex>. On the other hand, we don't spell out <list_element>
    and <paragraph>... (and so on -- this is a marvelous oppurtunity to
    open a rathole)
    
    Joe
205.8fwiw:TLE::SAVAGENeil, @Spit BrookFri Apr 10 1987 13:117
    In statistics, "hat" is a colloquial term for a circumflex-like
    character that goes on top of a letter representing a variable,
    for example "y-hat" means a "y" with the circumflex on top. 
    
    BTW: despite my wishing to avoid typing extra characters, I side
    with the <CIRCUMFLEX> tag folks.  Perhaps in could be shortened
    to <FLEX>, or perhaps <CFLEX>?
205.9ok, okCLOSET::ANKLAMFri Apr 10 1987 13:148
    
    ok, I'll cave in. however, we've frozen the code for the FT update,
    so it'll be <hat> until Version 1, when I'll call it <circumflex>.
    
    thanks for the feedback!
    
    patti
    
205.10Since I was asked...VIDEO::LASKOTim Lasko - TBU ArchitectureFri Apr 10 1987 16:456
205.11Why not user defined sysonyms fileIMAGIN::SAUNDERSDan Saunders @CX03 ; 522-5683Sat Apr 11 1987 00:323
Why not just have a file like Datatrieve does to allow user defined SYNONYMS.

Dan
205.12Do mathematicians say "hat" or "circumflex"?TOPDOC::HIDERPaul HiderSat Apr 11 1987 00:565
 
 Don't forget it *is* a *math* tag, lets not go calling it circumflex if
 it is commonly referred to in mathematical circles as a hat.

    ..Paul
205.13ho hum3D::BOYACKpithy...pithy...pithyMon Apr 13 1987 11:441
    ...while we're at it, how about calling * splat...
205.14PDVAX::P_DAVISPeter Davis, X-NYerMon Apr 13 1987 14:218
    I vote for "circumflex", but I think there should be a capability
    for defining tag synonyms.  The fact that "hat" is more common in
    mathematical circles doesn't make it correct.  The character is
    also used as an accent in French, and probably other languages as
    well.  The "!" character is frequently called a "shriek" in England,
    but I don't think that term should become standard.  On the other
    hand, if there were an <EXCLAMATION_MARK> tag, I can readily imagine
    people wanting to define a shorter synonym.
205.15CLOSET::KAIKOWThu Apr 16 1987 14:4610

1. Many mathematicians would call it the "involution operator"!

2. Although it may be invoked with a <math> tag, it is also a plain
   ASCII character (position 5/14).

3. It's use in s programming languages is not as a "hat" rather as a separate
   character ( a similar distinction may be made between LOW LINE as a 
   separate character and UNDERLINE for position 5/15 of ASCII).