It’s wild to think that a math puzzle from the 1200s is now helping power AI, encryption, and the digital world we live in. Every November 23, math lovers celebrate Fibonacci Day, a nod to the ...

Traders and investors in all markets can benefit from this timeless analysis technique, which is highly useful in determining entry and stop levels in multiple time frames and all market conditions.

Though generations of schoolchildren have cursed arithmetic, the world was a much more inconvenient place without it. Before the advent of modern arithmetic in the 13th century, basic calculations ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Stella Osoba is the Senior Editor of trading and investing at Investopedia. She co-founded and chaired Women in Technical Analysis. She has 15+ years of experience as a financial writer and technical ...