Approximation theory of linear operators investigates the systematic approximation of functions by sequences of linear mappings acting on function spaces. Central to the field are families of positive ...

Much scientific research across a range of disciplines tries to find linear approximations of nonlinear behaviors. But what does that mean? Spend some time browsing around the web site of MIT’s ...

I've been grading calculus exams this week, and even though my students did quite well overall there were a couple of errors that I see every semester. Errors that make mathematicians' heads explode.