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The WP Dot product article uses the LaTeX \cdot character for dot products. Wikipedia shows a raised decimal point example "£21·48", which uses the "middle dot" character. Wikipedia notates chemistry hydrates like "CuSO4 · 5H2O", which uses the "middle dot" character. Combined units can also be written with a dot, like "N·m".
The derivative of a vector valued function does not depend on the choice of a basis. So the second notation means nothing: \vec{v} is the function that you're differentiating. – egreg. Feb 9, 2012 at 22:44. 3. Obviously, since you are taking a derivative of a vector and the result is a vector, you should use \vec{\dot{\vec{v}}}.
10. amssymb has a \circledcirc command which outputs an empty circle inside a bigger circle, but I don't think there's a similar command where the inner circle is filled. You could however start from \circledcirc and stack a \bullet on it. \mathbin{%. \ooalign{$\circledcirc$\cr\hidewidth$\bullet$\hidewidth}%. }%.
TeX and its various derivatives (such as LaTeX) distinguish between normal prose (text mode) and mathematics (math mode). The simplest and original way to switch between the two is to use the math switch, which is $. Here is a sample document to show you how it is typically used. This is some normal text, written in text-mode.
I want something like this: gh $\blackdot$ On. I am aware of cdot but this needs to be much bolder. symbols. Share. Improve this question. edited Aug 31, 2017 at 18:02. Werner ♦. 611k 141 1.5k 2.3k.
The vertical position is fixed to center the symbol vertically around the math axis as \cdot and \bullet do. The width of the symbol is not the scaled down width of the \bullet (with scaled down side bearings), but a little larger width of \cdot. The scale and width factor can be configured by macros \bigcdot@scalefactor and \bigcdot@widthfactor.
9. Personally I use the \times symbol only in three different occasions: (1) the cross product –vector product– (e.g., \vec j \times \vec k = \vec{\imath}); (2) to write dimensions (e.g., $3 \times 3$ matrix); (3) to write numbers in scientific notation –to visually know if the whole expression is a number or a multiplication– (e.g., 2. ...
This works for all symbols, and might very well be the reason that there are no dotted symbols in amssymb. To let TeX treat such a new construct as an operator in terms of spacing though, you need to use \mathop and \mathbin, that's to say \mathop{\dot{\bigcup}} and \mathbin{\dot{\cup}}. The usual cupdot has the dot in the body of the union ...
10. According to the Comprehensive List of LateX symbols (a very useful guide, by the way), the \dotdiv command (part of the mathabx package) produces the desired operator. Share. Improve this answer. answered May 14, 2013 at 9:43.
Oct 25, 2015 at 8:56. 2. \textbullet (in text mode) and \cdot (in math mode) look pretty different; the former is much heavier. If you want a light dot, one option is just to write $\cdot$, of course. Alternatively, maybe look here or here. Interpunct on Wikipedia maybe also useful for tracking down the symbol you want.