@@ -60,6 +60,15 @@ It must be included as follows:
- All symbols that appear in equations (or elsewhere) must be properly explained.
- Symbol usage must be consistent throughout your writeup, e.g. don't use `x(t)` to refer to the baseband and the passband signal.
#### Text Within Math Mode
Note: Fonts and text rendering with or without LaTeX is seemingly pretty complicated, but the following offers guidance that hopefully should deliver good results. The main goal of the section is to avoid writing text in math mode. It applies as written when using the default font setup (serif / roman fonts)
- Sub- and superscripts that are not variables, i.e. are not stand-ins for numbers/expressions, shall be set upright in the math font family, e.g. `\mathrm{word}`. Examples:
- if you have the radius of the Earth as `R_E`, the `E` shall not be cursive, because it does not replace something else (it's a name), so write `R_\mathrm{E}`
- set the summation index cursive (that is, without any special markup): `\sum_{i=1}^{N} x_i` (the `_i` shall be replaced by 1, 2, ..., N and is therefore a variable that is set cursive)
- Words or abbreviations in equations that still act as symbols are set upright in the math font family, e.g. `\mathrm{velocity} = \frac{\mathrm{distance}}{\mathrm{time}}`. This also applies to subscripts, etc. Please note that `\mathrm` is very limited and does e.g. not support (i.e. eat) spaces.
-`\text{your text here}` is used when actual text is needed in math mode, e.g. in a `cases` environment with `\text{if\ } x >0` or `\text{otherwise}`
### Units and Quantities
- When writing quantities, use a package like `siunitx` (if possible) - then you don't have to deal with the typography yourself.
- Prefer quantity equations (equations that remain valid independent of the units, e.g. `\lambda = c / f`) and make sure the units work out. Avoid numerical-value equations (equations that depend on the quantities being expressed in specific units, e.g. `\lambda in m = 300 / f in MHz`). If numerical-value equations are required or very common, give the quantity equation beforehand.
