The Sieve of Eratosthenes

That is a sieve. I usually use sieves to sift my cake flour. Sifting cake flour means the bulky stuff is forced through these small holes. Thus, the flour ends up fine; finer and softer than sand. Why must I sift my cake flour? So the finished cake is light as a feather and soft […]

XOR

XOR, also known as Exclusive OR, is a logical operation often used in programming. It is referred to $\oplus$, but in programming, for simplicity, it is referred to as $^$. There are many special propreties about XOR: The order in which you calculate XOR operations does not matter, for example, $2^3^1^4$ can also be calculated […]