[math-fun] A trillion triangles and congruent numbers

<http://www.eurekalert.org/pub_releases/2009-09/aiom-att091809.php> Mathematicians from North America, Europe, Australia, and South America have resolved the first one trillion cases of an ancient mathematics problem. ... The problem, which was first posed more than a thousand years ago, concerns the areas of right-angled triangles. The surprisingly difficult problem is to determine which whole numbers can be the area of a right- angled triangle whose sides are whole numbers or fractions. ... /Bernie\ -- Bernie Cosell Fantasy Farm Fibers mailto:bernie@fantasyfarm.com Pearisburg, VA --> Too many people, too few sheep <--