In mathematics, the x-intercept of a function or equation refers to the point where the graph of the function or equation intersects the x-axis. Finding the x-intercept is a fundamental skill in ...

Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International stock ...

Due to the labour disruption at Canada Post, mail correspondence from some programs and services may be impacted. Consult the measures in place during the disruption of Canada Post services. Sometimes ...