multiplicative rules for constructing it in 1570. Pascal's Traité du triangle arithmétique (Treatise on Arithmetical Triangle) was published posthumously in 1665...

(NB. The 4-bit 8421 BCD code with an extra parity bit applied as least significant bit to achieve odd parity of the resulting 5-bit code is also known...

nonzero its sign gives the parity of the number of prime factors of x, so informally the Riemann hypothesis says that the parity of the number of prime factors...