"Pick-Up Lines To Use On Mathematics Chicks" joke

You fascinate me more than the Fundamental Theorem of Calculus.
Are you a differentiable function? Because I'd like to be tangent to your curves!
You and I would add up better than a Riemann sum.
My love for you is a monotonic increasing function of time.
Wanna come back to my room and see my copy of Euclid's "Elements"?
I am equivalent to the Empty Set when you are not with me.