Which is the best font for bold math symbols?
By default, \\mathbf renders bold capital letters upright and bold lowercase letters italic, but [math-style=ISO] makes italic the default for everything, including regular-weight uppercase Greek. You can change only the behavior of bold uppercase letters with bold-style=ISO] or [bold-style=upright].
How can I get Bold math symbols in latex?
While \\bm and \\boldmath are some good options in LaTeX, modern packages for XeLaTex can give a lot more control over the fonts from the very beginning, without the need to use commands different from the standard \\mathbf that every one expects naively to work the first time one tries to write bold italic characters.
How to set not Italic or not bold font?
To override just the bold font weight, while leaving the ( italic or upright) font shape unchanged, use either extmd {…} or {\\mdseries …}: To force both normal font weight and normal font shape simultaneously, the preceding methods can be combined.
What’s the best way to make Latin letters bold?
To make Latin-letter variables bold I can use e.g. \\mathbf {a}, but while putting Greek letters or symbols such as abla inside \\mathbf doesn’t cause any errors or warnings, it also doesn’t do anything else. What is the best way to make bold math symbols, in particular Greek letters and abla?
How to make fonts bold in math environment?
The \\boldsymbol command keeps the usual italic shaped letters of the math environments.
How to write Greek letters in math mode?
Instead of extbf use \\boldsymbol (load the amsmath package to get it) to get it bold, put everything in math mode, and to get it upright use the upgreek package and \ptheta instead of theta: If you do not need it just for one theta, also see at Bold math: Automatic choice between \\mathbf and \\boldsymbol for Latin and Greek symbols?