Suppose one writes a scientific paper from Math or a related field. Should mathematical symbols be followed by nouns describing them? Should f, x, Ω, P(A) and ß be preceded by function, variable, set, probability and angle?
A rule, which I know, says that a symbol shouldn't start a sentence. Is it also wrong if it is inside a sentence? Does the same apply to the labels like Equation (2)? Is it correct to say After solving (2) we get that x=2? Or should I use Equation (2)?
I guess it's fine to omit a descriptional noun before a variable inside a logical relation like an equation, but is the same true for free variables?
Example 2: For every event in Ω or For every event in the set Ω?
Example 3: The same is true for y and z or The same is true for variables y and z?
Is there a rule of thumb about grammar? Like function f instead of a function f?