arrow sign above several letters: help wanted

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Article #1282

#1282

From: Mingzuo Shen
Date: Wed, 15 Apr 1992 15:15

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Hi all,

    I would appreciate any help in Plain TeX: to write a vector
sign (arrow) above two (or more) letters. Something like:

    $\overline{AB}$

but with an arrow head attached to the line. The following
is good if there is only one letter:

    $\vec a$

Thanks in advance. Note again, Plain TeX please. 

mingzuo shen

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Message-ID: <1992Apr15.151547.5556@athena.cs.uga.edu>

Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!sol.ctr.columbia.edu!emory!athena.cs.uga.edu!shen

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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!sol.ctr.columbia.edu!emory!athena.cs.uga.edu!shen
From: shen@athena.cs.uga.edu (Mingzuo Shen)
Newsgroups: comp.text.tex
Subject: arrow sign above several letters: help wanted
Message-ID: <1992Apr15.151547.5556@athena.cs.uga.edu>
Date: 15 Apr 92 15:15:47 GMT
Article-I.D.: athena.1992Apr15.151547.5556
Distribution: usa
Organization: University of Georgia, Athens
Lines: 15