Kashiwara was in the right place at the right time: Sato and his colleagues were then developing a completely new branch of mathematics that combines two distinct fields: analysis and algebra.

Petrobras (PBR) ended the recent trading session at $13.97, demonstrating a -1.34% swing from the preceding day's closing price. The stock trailed the S&P 500, which registered a daily gain of 1.77%.

Clarification: This story has been updated to clarify how University of Colorado researchers handle their data collection. A student digs into a math problem that references his favorite superhero ...

Here's everything you need to know about the three-day weekend full of spinning, snorting, dirt-flying fun that the PBR will bring to the desert. To learn a little more about the PBR show ...