Roger Penrose

3 results

Christmas tree: When divided up by red, blue and gold kites and darts, no two adjacent regions are the same colour.
Christmas trees and the four-colour theorem

When decorating our Christmas trees, we aim to achieve an aesthetic balance. Let’s suppose that there is a plenitude of baubles, but that their colour(...)

US president Barack Obama presents the presidential medal of freedom to B Stephen Hawking in 2009. Photograph: Jewel Samad/Getty Images
Remarkable scientist who contributed greatly to our understanding of the universe
  • People
  • March 14, 2018, 11:59

Stephen Hawking, the brightest star in the firmament of science, whose insights shaped modern cosmology and inspired global audiences in the millions,(...)

Quessia Dessaless from Rutland National School, Dublin, with a maze illustrating the concept of probability. Photograph: Marc O’Sullivan
Count on it: Maths Week adds up to money well spent

With the new school year beginning, teachers are looking for opportunities to enrich the education of their pupils. Next month the eighth annual Maths(...)