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1/17/11
Original Poster
MaximusBird

How can I make a dot over a single letter?


Google docs only allows to put indices in the upper right or lower right corner around a letter. Is it possible to write exactly OVER a letter? Or only making a simple dot?


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ahab
1/17/11
ahab
Did you try inserting an equation and then typing in the LaTeX expression \dot{x} 

(I found I had to manually remove the braces afterwards by a dotted x would remain.)

Unfortunately I could not make the LaTeX \overset{3}{x} work
Bas Braams
1/18/11
Bas Braams
Nice find, ahab, of this apparently undocumented feature. "\dot x" followed by carriage return will do too, and more generally something like "dot anything" followed by CR centers the dot above the anything. The related documented features are the \overline, \widehat and \tilde (see Operators with variables in [1]).

ahab
1/18/11
ahab
"this apparently undocumented feature."
It may be undocumented in the help topics but I believe it was in an official Google Docs forum blog or in this forum the allowed use of LaTeX expressions was mentioned.
Bas Braams
1/18/11
Bas Braams
OK ahab, I guess that counts as documentation too. Let it hereby be documented that \ddot gives us the second derivative in fluxion notation. However, not just any LaTeX symbol is recognized as a Documents equations symbol. I've been looking for some other undocumented ones and they all were undocumented for a reason -- they don't exist in Documents equations mode.
1/18/11
Original Poster
MaximusBird
thanks for your quick help - this works
Bas Braams
1/18/11
Bas Braams
I just noticed a few other undocumented ones. The \widehat is mentioned in [1], but there is also the ordinary \hat, which doesn't grow with whatever it is covering. The binomial brackets are in the visual menu, but the \binom shortcut exists although it isn't mentioned in [1]. I haven't been able to locate the norm symbol, LaTeX \norm; a pair of double vertical bars that should grow with whatever is inside like the other brackets that are supplied in the equations menu (round brackets, square brackets, braces, and the absolute value pair). I'm also missing the angular brackets that are often used to denote an average of some kind. They too should grow with whatever is inside. The norm symbol and the angular brackets are very common; they really should be added to the collection with priority.

Bas Braams
1/19/11
Bas Braams
Some more presently undocumented mathematical symbols and their shortcuts. The \overline is in the Mathematical Equations help article and it is what you get also from the point-and-click menu, but there is also an \underline, not documented and not in the point-and-click. The overline and underline grow with to what they are attached. There is a \bar if you want a fixed-width overbar. There is also a \vec for the vector arrow, as in "\vec x". Earlier in this conversation we took note of \dot, \ddot and \hat (all undocumented and not in the point-and-click) and of the \binom keyboard shortcut.
 
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