British-Lebanese mathematician Michael Atiyah giving a lecture on the Riemann hypothesis on Monday at the Heidelberg Laureates Forum in Germany. Screengrab: YouTube

The 90-year-old mathematician Michael Atiyah has presented what he referred to as a “simple proof” of the Riemann hypothesis, a problem which has elud(...)

An undated portrait of German mathematician Bernhard Riemann (1826-1866). Riemann established the foundations of modern differential geometry and, in 1859, formulated the hypothesis that bears his name.  Photograph: Bettmann/Getty Images

A major mathematical result has been announced by British-Lebanese mathematician Sir Michael Atiyah. In a talk at the 6th Heidelberg Laureate Forum in(...)