[math-fun] April 2007 update of multimagie.com

The April 2007 update of www.multimagie.com/indexengl.htm is online. You will see a new page on the first bimagic square of primes, already announced through [math-fun], but also some other news. Reminder of the main unsolved problems. Intriguing, because on small objects. Is it possible to construct, using distinct integers: -a 3x3 magic square of squares? -a 3x3 semi-magic square of cubes? -a 4x4 magic square of cubes? or 5x5, 6x6, 7x7, 8x8? -a 5x5 bimagic square? -a ?x?x? multiplicative magic cube using distinct integers < 416? Christian.