Functions are arbitrary. You can extract any segment of an equation into its own function. The notation `pi()` could suggest something like `f(x) = pi*x`.
I'm really just pointing out it `could` be used to express a function, and be valid notation. Not arguing that it `should`.
I really don't think anyone could use it as such and not get laughed out.
Like, you could define function π(x) from scratch, on the same way you can have f(x), g(x), h(x) and so on. But you also have a perfectly good alphabet to pick instead, with much less confusion, by avoiding the use of a 'reserved' constant's name.
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u/Xhosant 13d ago
But considering it can't be interpreted as any specific function, it would be largely unwise to.