Mathematical Formulas Coffee Mug - Ponder Famous Math Equations While You Enjoy Your Drink - Comes in a Fun Gift Box - by The Unemployed Philosophers Guild Hey, math fans! Since you can't actually listen to a mathematics greatest hits album, we decided to create the next best thing -- meet the Math Mug. It's a deep black ceramic mug covered with some of history's most famous and important mathematical formulas. You get gems such as 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 a superb gift for any mathematician, physicist, or math teacher. All in all, it adds up to a pretty terrific coffee mug.Holds 12 oz. Dishwasher and microwave safe. 12 oz. mug. Dishwasher and microwave safe. From the Unemployed Philosophers Guild. Don't worry. We are employed, just not as philosophers. We're a small, Brooklyn based company specializing in gifts for the sophisticated gift giver. For whatever you need, we have presents of mind.