The Golden key Coffee Mug
Euler's product in relation to the zeta function, as Derbyshire refers to as the "golden key". Euler gave a thorough proof of this relation, which is an important aspect in the Riemann conjecture, relating to the distribution of primes. One of the most beautiful equations in all of maths.
$13.85
![](https://pinterest.com/pin/create/button/?url=http://findamug.com/product/mugs/The-Golden-key-Coffee-Mug/168911645315958279&media=https://rlv.zcache.com/the_golden_key_coffee_mug-r3a4aa9ccb3604323a678a87d62bfa3b2_x7jgr_8byvr_500.jpg&description=Euler's product in relation to the zeta function, as Derbyshire refers to as the "golden key". Euler gave a thorough proof of this relation, which is an important aspect in the Riemann conjecture, relating to the distribution of primes. One of the most beautiful equations in all of maths.)
