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Bookmark or Share- Which dot character to use in which context? - TeX - TeX - LaTeX Stack ...WP Multiplication article uses \cdot for scalar multiplication. WP says the matrix dot product should be written using the "bullet operator" character, like "a ∙ b". 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.
- When should \\cdot be used to indicate multiplication?Multiplying actual numbers, as you say: 2 \cdot 2 versus 22 is obviously the way to go. More subtly, writing, say, 2 \cdot 3^4 is an improvement over 2 3^4 for the same reason. You might say "of course!" except that sometimes, if you have a pedantic input style (like me) you fool yourself: 2 {13}^2 looks like 213^2. Function notation.
- Making a thicker \cdot for dot product (that is thinner than \bullet)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.
- symbols - Automatically use \cdot - TeX - LaTeX Stack ExchangeIf you don't like to type the \cdot command, you can use a shortcut that replaces the \cdot. This can be done "outside the LaTeX environment. Like an autocorrection. I'm using these things a lot, because sometimes I'm to lazy to type, but I want to keep the "correct" syntaxis, without some extra things than I will forget in a couple of months.
- math mode - Writing multiplication dots - TeX - LaTeX Stack Exchange@bjartmar: This might be language specific. In German, for example, scalar multiplication is written with a \cdot. We also use this same symbol for the dot product, although some books prefer the \circ. And we generally use \times for the cross product (vector product). Personally, I would never write 2(2)=4 or (2)(2)=4 in a text, even as a ...
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