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Science News February 3, 2001 Ivars Peterson 
Fibonacci's Chinese Calendar The curious coincidence of the Fibonacci cycle and the Chinese calendar cycle allowed Seok Sagong of Middletown, Conn., to establish a onetoone correspondence between the sequence of final digits of Fibonacci numbers and the names of years in the Chinese calendar... 
Science News January 20, 2001 Ivars Peterson 
Scheduling Random Walks Juggling competing demands in a network of feverishly calculating computers drawing on the same memory resources is like trying to avert collisions among blindfolded, randomly zigzagging ice skaters.... 
Science News January 6, 2001 Ivars Peterson 
Folding Maps Now Erik D. Demaine of the computer science department at the University of Waterloo in Ontario and his coworkers have developed an efficient method for a puzzling problem: recognizing when a creased sheet indeed is foldable into a flat package... 
Science News December 2, 2000 Ivars Peterson 
Zeroing In on Catalan's Conjecture Preda Mihailescu of the Swiss Federal Institute of Technology in Zurich has proved a theorem that is likely to lead to a solution of Catalan's conjecture, a venerable problem involving relationships among whole numbers... 
Science News November 25, 2000 Ivars Peterson 
Square of the Hypotenuse A history of the welltraveled and perpetually youthful Pythagorean Theorem... 
Science News November 4, 2000 Ivars Peterson 
Mathematical Art on Display The term "mathematical art" usually conjures up just one namethat of Dutch graphic artist M. C. Escher. But the realm of mathematical art is far wider and more diverse than most people realize... 
Science News October 28, 2000 Ivars Peterson 
Dots and Boxes The familiar pencilandpaper game of DotsandBoxes sounds exceedingly simple. Despite the simplicity of its rules, the game can be played on several different levels of sophistication... 
Science News October 14, 2000 Ivars Peterson 
Disorder in the Deck How many shuffles are enough? Different mathematical methods yield different answers as to the amount of shuffling needed to erase the residual order in a pack of playing cards... 
Science News September 30, 2000 Ivars Peterson 
Planes of Budapest From a weekly meeting of passionate Hungarian mathematicians in 1933, an elegant geometric problem emerges that continues to interest mathematicians today, nearly 70 years later... 
Science News September 16, 2000 Ivars Peterson 
Plato's Molecule The Pythagoreans believed that the dodecahedron formed the "timbers" on which the spherical bulk of the heavens was built. This Platonic solid has been an object of fascination for millennia. Now, the dodecahedron is in the news again... 
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