From release version 1. Support files are supplied free-of-charge. See the Support page for details.
Leading international scientific organisations recommend math layout rules in line with the International Standard [ISO] in their style guides, e. The overall rule is that symbols representing physical quantities or variables are italic, but symbols representing units, or labels, are roman. Symbols for vectors are boldface italic, symbols for tensors are sans-serif bold italic, and symbols for matrices are boldface italic.
Texvc cannot render arbitrary Unicode characters. Those it can handle can be entered by the expressions below. For others, such as Cyrillicthey can be entered as Unicode or HTML entities in running text, but cannot be used in displayed formulas. See here for all named colors supported by LaTeX.
When mathematicians run out of symbols, they turn to other alphabets. This is common in Lie groups when you want to associate related symbols to a Lie group and its Lie algebra. By convention a Lie group is denoted by an ordinary Latin letter and its associated Lie algebra is denoted by the same letter in Fraktur font.
The isomath package enables formatting Greek and Latin letters as symbols for vectors, matrices, and tensors in the typefaces recommended for scientific papers by the International Standard ISO For this, a bold italic and a sans-serif bold italic math alphabet are defined. Some of these points are adressed by related packageshowever there is currently no package known to the author that defines the sans-serif bold italic math alphabet needed for tensor symbols.
One of the greatest motivating forces for Donald Knuth when he began developing the original TeX system was to create something that allowed simple construction of mathematical formulae, while looking professional when printed. The fact that he succeeded was most probably why TeX and later on, LaTeX became so popular within the scientific community. Typesetting mathematics is one of LaTeX's greatest strengths.
This is a difficult to track down error but also mildly amusing! Using pdflatex? Try switching to xelatex which can support up math fonts.
In most documents, Script and Calligraphic shapes can be substituted for one other pretty much as a choice of font. Accordingly when the math alphanumeric symbols were added to Unicode, the two shapes were unified. This post discusses two ways to do this is spite of the quandary that some math fonts have calligraphic letters at the existing math script code points, while others and the Unicode Standard have fancy script letters at those code points. There's a long history of such typography.