Franklin

Linear homogeneous recurrence relations with constant coefficients and finite order [Read More]

Here are two ideas that appear often. [Read More]

Farey sequence [Read More]

Euclid 2011, Problem 9. In this problem they gave us: [Read More]

A word is a concatenation of $0$ or more letters from a finite alphabet. Consider the alphabet $a,b$ consisting of the letters $a$ and $b$. Examples of words on this alphabet are $a,b,aab,babaa$ and the empty word $‘‘”$, which is often denoted by $ϵ$. Words can be concatenated. This means putting... [Read More]