>> I've also seen pi used more than once as a general variable, rather 
>> than a function name or a mathematical constant. This is why you see 
>> phrases like "e^(i x) where e is the base of natural logarithms and i 
>> is the imaginary unit". Because otherwise it's horrifyingly ambiguous.
> 
> I am working in an environment where the imaginary unit is j (because i 
> is for current). I have trouble adapting.

Hahaha.

Arbitrary conventions FTW!

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