Is there an equation for every graph? Is it possible to write a formula for any line imaginable, for example a drawing?
I once saw this long, and complicated, formula made by a mathematician with loads of ceilings etc.
The explanation was something to do with something he was programming for computers using pixels - I'm really not sure - but basically, the entire graph had every single pixel drawing there was, and then limits were set to section off the image you wanted.
Is this possible with actual lines, not pixels.
-- I did a search and it's this: Tupper's self-referential formula

There are fantastic formulas, like the Batman equation, but in general I believe it is not possible.
If we restrict us to the graphs of continuous functions of one variable, for our formulas we usually stick to a set of elementary functions which is exhausted rapidly for more exotic cases and must be extended by special functions or integral functions, solutions of differential equations etc.
