Like many heroes of Greek myths, the philosopher Hippasus was rumored to have been mortally punished by the gods. But what was his crime? Did he murder guests or disrupt a sacred ritual? No, Hippasus's transgression was mathematically proving the hitherto unprovable. Ganesh Pai describes the history and math behind irrational numbers. Lesson by Ganesh [...]
Let's take a look back to the hardest math problems of 2018 that went viral as the internet seems to have a bit of a love-hate relationship with math. People couldn't get enough of math questions this year as they debated the answers in Twitter threads and parenting forums. But they also lamented how much [...]
Math is full of symbols: lines, dots, arrows, English letters, Greek letters, superscripts, subscripts ... it can look like an illegible jumble. Understanding them is a matter of memorizing them until they stick, as with any language. This video from Ted-Ed explains the symbols' origins.