Hello, math fansSince you can't listen to an album of math's greatest hits, we decided to create the next best thing -- meet the Math Mug. It's a ceramic mug covered with some of history's most famous and important mathematical formulas.You get gems like Newton's Second Law, Planck's Equation, Hubble's Law, the Fourier Transform, and the mother of all equations, Einstein's General Theory of Relativity. The Math Mug is covered with formulas like this, making it an excellent gift for any mathematician, physicist, or math teacher. All in all, it makes a pretty awesome coffee mug.Holds 11 oz. Dishwasher and microwave safe.11 oz. mug. Dishwasher and microwave safe.From the Unemployed Philosophers Guild. Don't worry. We're employed, just not as philosophers. We're a small company based in Brooklyn that specializes in gifts for the sophisticated gift giver. Whatever you need, we have gifts in mind.