Even if the origins of x in algebra are uncertain, there are some instances in which historians do know why x is used. The X in Xmas as an abbreviation for Christmas definitely does come from the ...

The letter x often symbolizes something unknown, with an air of mystery that can be appealing – just look at Elon Musk with SpaceX, Tesla’s Model X, and now X as a new name for Twitter. You ...

A UNSW Sydney mathematician has discovered a new method to tackle algebra's oldest challenge—solving higher polynomial equations. Polynomials are equations involving a variable raised to powers ...

Mathematics Mathematician wins Abel prize for solving equations with geometry. Luis Caffarelli has been awarded the most prestigious prize in mathematics for his work on nonlinear partial ...

Even though “x” is one of the least-used letters in the English alphabet, it appears throughout American culture, from Stan Lee’s X-Men superheroes to the television series “The X-Files.” ...