Thing is, you usually define all your variables. At least we do in engineering (of physical variety, rather than software).
Mostly because we can’t expect everyone reading the calculation to know, and that not everyone uses the same symbols.
Not explaining each variable is bad practice, other than for very simple things. (I do expect everyone and their dog reading a process eng calc to know PV=nRT, at a minimum).
Just like (in my opinion) not defining industry specific abbreviations is also bad practice.
I mean, it was rather physics that was worse in this regard.
Mathematicians do define their variable quite rigorously. Everything is so abstract, at some point you do just need to write down “this thing is a number”. Problem with maths folks is rather that they get more creative with their other symbols. So, “this thing is a number” is actually written as “∃x, x ∈ ℝ”.
But yeah, in the school/university physics I experienced, it was assumed that you knew that U is voltage, ρ (rho) is density, ω (omega) is angular velocity etc…
At one point, I had to memorize six pages of formulas and it felt like every letter (Latin, Greek, uppercase, lowercase, some Fraktur for good measure) was a shorthand for something.
Thing is, you usually define all your variables. At least we do in engineering (of physical variety, rather than software).
Mostly because we can’t expect everyone reading the calculation to know, and that not everyone uses the same symbols.
Not explaining each variable is bad practice, other than for very simple things. (I do expect everyone and their dog reading a process eng calc to know PV=nRT, at a minimum).
Just like (in my opinion) not defining industry specific abbreviations is also bad practice.
Mathematicians don’t do this? Shame on them.
I mean, it was rather physics that was worse in this regard.
Mathematicians do define their variable quite rigorously. Everything is so abstract, at some point you do just need to write down “this thing is a number”. Problem with maths folks is rather that they get more creative with their other symbols. So, “this thing is a number” is actually written as “∃x, x ∈ ℝ”.
But yeah, in the school/university physics I experienced, it was assumed that you knew that U is voltage, ρ (rho) is density, ω (omega) is angular velocity etc…
At one point, I had to memorize six pages of formulas and it felt like every letter (Latin, Greek, uppercase, lowercase, some Fraktur for good measure) was a shorthand for something.