Microsoft Excel 2010 can be a huge help for a business when it comes to crunching the businesses numbers. Excel has a number of financial functions revolving around the periodic interest rate, which ...

The original version of this story appeared in Quanta Magazine. Calculus is a powerful mathematical tool. But for hundreds of years after its invention in the 17th century, it stood on a shaky ...

In the late 19th century, Karl Weierstrass invented a fractal-like function that was decried as nothing less than a “deplorable evil.” In time, it would transform the foundations of mathematics.