TITLE: Mathematical Quine
QUESTION [19 upvotes]: I have recently discovered that I can create letters and any shape I want by hiding parts of curves by making them complex. To generalise if I want $x>a$ then I multiply my function by $\sqrt{\frac{|x-a|}{x-a}\,}$ and replacing $x-a$ with $b-x$ I can make $x<b$.
The challenge I put forward is this:
Create an equation or set of equations, which graph the equations themselves
Is this possible?

REPLY [2 votes]: As Ross Millikan says in the comments, Tupper's self-referential formula is a famous example.