
 Horizon  Fermat's Last Theorem 
  Fermat owned a copy of this book, which is a book about numbers with lots of problems, which presumably Fermat tried to solve. 
  Fermat's original notes were lost, but they can still be read in a book published by his son. 
  So then a natural question is, the question Fermat raised: supposing you change from squares, supposing you replace the two by three, by four, by five, by six, by any whole number 'n', and Fermat said simply that you'll never find any solutions, however, however far you look you'll never find a solution. 
 www.cs.wichita.edu /~chang/fermat.html (4959 words) 
