# Mathematical Valentines Day: 1 + 1 <3

Roses are red.
Violets are approximately blue.
A paracompact manifold with a Lorentzian metric,
can be a spacetime, if it has dimension greater than or equal to two

Shakespeare, maybe not. But the course of true science never did run smooth.

 The First Heart Curve: $(x^2+y^2-1)^3=x^2.y^3$ And another pretty one (polar coordinates): $r=\frac{\sin t \sqrt{ | \cos t | }}{\sin t + 7/5} -2.\sin t + 2$