Say someone sets out to prove, by contradiction, that something is a joke. You would have to assume the opposite of what she’s proving is true. You would follow her thoughts logically until a ...

Mark your calendar for Monday, May 5, which marks a rare mathematical holiday. This May 5, 2025, is Square Root Day, an event that only happens nine times each century. It occurs when the day and ...

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, ...

If Mr. Murphy of “Murphy's Law” fame [1] had been a mathematician he would have had a warning something along the lines of: “Beware of Square Root of 2 errors ...

Happy Square Root Day! Apparently, April 4, 2016 is one of the unofficial holidays that occur when the month and day are the square root of the last two digits of the year. (In this case, month number ...