seen from China
seen from China
seen from China
seen from Saudi Arabia
seen from United States
seen from United States
seen from Netherlands
seen from China
seen from Malaysia
seen from Serbia
seen from Netherlands
seen from Saudi Arabia
seen from Malaysia
seen from United States
seen from Saudi Arabia
seen from Italy
seen from United States
seen from Malaysia
seen from Malaysia
seen from Singapore
In the 1960’s, John Leech found the tightest regular packing of spheres in 24 dimensions. [Priority may belong to Ernst Witt.] Three previously unknown «sporadic» groups—exceptional atoms of symmetry—were then found by John Conway, analysing Leech’s special arrangement.
Mark Ronan
