Hello MathML!

This mathematical formula with a big summation and the number pi:

n=1 + 1 n2 = π2 6

is easy to prove. And was easy to markup. I just stole the MathML directly from the MathML Core documentation.

The fraction 13 is not a decimal number (I got this example from Getting started with MathML and styled it using CSS).

I made this one: 1 4 2 + 3 as a solution to the last exercise on this same page.

I'm going to need a lot of Unicode characters for this math markup, and I'll use Mathematical operators and symbols in Unicode and List of logic symbols as primary resources (thanks Wikipedia!)

P ∧ Q, P ∨ Q, P → Q, P ↔ Q, ¬P → ¬Q