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Science News
May 17, 2003
Ivars Peterson |
Sequence Puzzles Neil A.J. Sloane of AT&T Shannon Labs in Florham Park, N.J., has been collecting number sequences ever since he was a graduate student at Cornell University in the 1960s.   |
Science News
June 3, 2006
Ivars Peterson |
Fibonacci's Missing Flowers The number of petals that a flower has isn't always a Fibonacci number. You have to be careful when you're building mathematical models of natural phenomena. |
Science News
August 28, 2004
Ivars Peterson |
More Progressive Primes In July, Markus Frind, Paul Jobling, and Paul Underwood announced that they had discovered the first sequence consisting of 23 prime numbers in arithmetic progression. This surpasses the previous record of 22 primes in arithmetic progression, set in 1993. |
Science News
May 28, 2005
Ivars Peterson |
Mean Median Surprise Mathematicians found, using three numbers, each M&m (mean and median) sequence they found would stabilize, eventually reaching a constant value. |
Science News
April 24, 2004
Ivars Peterson |
Progressive Primes In one step toward elucidating certain primal mysteries, two mathematicians have now apparently proved that the population of primes contains an infinite collection of arithmetic progressions. |
Science News
September 28, 2002
Ivars Peterson |
Stepping Beyond Fibonacci Numbers Trying variants of a simple mathematical rule that yields interesting results can lead to additional discoveries and curiosities. |
Science News
June 29, 2002
Ivars Peterson |
Dangerous Problems Some mathematical problems are easy to describe but turn out to be notoriously difficult to solve. Nonetheless, despite repeated warnings from those who have failed in the past, these unsolved problems continue to lure mathematicians into hours, days, and even years of futile labor. |
Science News
September 24, 2005 |
Math Music An interactive Web site, developed at Eastern Washington University, provides variety of tools for composing music based on mathematical recipes that convert sequences of numbers -- such as pi, or Fibonacci numbers -- into sounds. |
Science News
July 17, 2004
Ivars Peterson |
Waring Experiments The different ways of expressing whole numbers as sums of parts has long fascinated both professional and amateur mathematicians. |
Science News
July 16, 2005
Ivars Peterson |
Closing the Gap on Twin Primes Euclid proved that the set of primes is infinite in size more than 2000 years ago, but no one has yet proved whether there is an infinite number of twin primes, or pairs of primes that have a difference of two. There's now hope that that matter will finally be resolved. |
Science News
November 4, 2006
Ivars Peterson |
Designer Decimals Fractions can yield amazingly familiar decimal expansions. |
Science News
March 12, 2005
Ivars Peterson |
Fibonacci's Other Numbers Generalized Fibonacci arrays have attractive properties and could provide a wealth of further activities for exploration... Puzzle of the Week... |
Science News
May 4, 2002
Ivars Peterson |
Prime Spirals There is truly not only mystery but also beauty in the distribution of prime numbers... |
Financial Planning
August 1, 2013
Craig L. Israelsen |
Does the Sequence of Market Returns Matter? The markets have good years and bad years, but the impact on a client s investments depends on the timing. |
Bio-IT World
January 21, 2005
Kevin Davies |
Simulated Shades of Jurassic Park? Bioinformatics researchers have re-created part of the genome sequence of an ancestral mammal that lived 70 million to 80 million years ago. |
Chemistry World
July 13, 2011
Hayley Birch |
Naked mole-rat genome holds clue to beating cancer The recently published draft sequence of the naked mole-rat genome promises to reveal the secrets of its long and remarkably cancer-free existence, potentially providing new targets for anti-cancer drugs. |
Science News
March 4, 2006
Ivars Peterson |
The Limits of Mathematics No matter what the system of axioms or rules is, there will always be some assertion that can be neither proved nor invalidated within the system. |
Science News
March 30, 2002
Ivars Peterson |
Rainbow Randomness The branch of pure mathematics known as Ramsey theory concerns the existence of highly regular patterns in sufficiently large sets of randomly selected objects. Patterns can arise out of randomness in a variety of ways... |
Science News
June 30, 2001
Ivars Peterson |
Random Home Runs In the current issue of the Journal of Recreational Mathematics, economist Paul M. Sommers of Middlebury College, Vermont, addresses the question of whether top home-run sluggers knock out homers at random or whether they hit in streaks... |
