81. Mathematics World Wide Web Resources math problems, Puzzles, and Tutorials. unsolved mathematics problems http//mathworld A great resource for people who love to solve math problems. http://library.austincc.edu/w3/MTH/&e=747

82. [math/0010143] Thirty-Six Unsolved Problems In Number Theory mathematics, abstract math.GM/0010143. From Florentin Smarandache smarand@unm.edu Date Fri, 13 Oct 2000 221208 GMT (117kb) ThirtySix unsolved problems in http://arxiv.org/abs/math.GM/0010143&e=747

Mathematics, abstract math.GM/0010143 From: Florentin Smarandache [ view email ] Date: Fri, 13 Oct 2000 22:12:08 GMT (117kb) Thirty-Six Unsolved Problems in Number Theory Authors: Florentin Smarandache Comments: 38 pages, Published in "Only Problems, Not Solutions!", by Florentin Smarandache, Xiquan Publ. Hse., Phoeix, 1991 Subj-class: General Mathematics MSC-class: Partially or totally unsolved questions in number theory and geometry especially, such as coloration problems, elementary geometric conjectures, partitions, generalized periods of a number, length of a generalized period, arithmetic and geometric progressions are exposed. Full-text: PDF only References and citations for this submission: CiteBase (autonomous citation navigation and analysis) Which authors of this paper are endorsers? Links to: arXiv math find abs

83. AMERICAN MATHEMATICAL MONTHLY - APRIL 1998 math.brown.edu. unsolved problems Which Coronas Are Simple? by Branko GrŸnbaum grunbaum@math.washington.edu. problems AND SOLUTIONS http://www.maa.org/pubs/monthly_apr98_toc.html&e=747

84. Mathematics Competitions Listserv. mathMania. mathSoft s unsolved mathematics problems Collection of unsolved math problems and many links to similar sites. UNB http://camel.math.ca/Exams/competitions.html&e=747

85. Article About 3 Unsolved Math Problems unsolved math Mysteries math problems from the Clay Classics to Chomping Cookies Commentary By John Allen Paulos Special to ABCNEWS.com. Dec. http://garsia.math.yorku.ca/~zabrocki/math3260w03/article.html&e=747

86. Register At NYTimes.com (23) What Is the Most Important Problem in math Today? would say it s the problem they re working on, but of all the famous unsolved problems, one stands out http://www.nytimes.com/2003/11/11/science/11MATH.html&e=747

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87. Unsolved Problems From MathWorld unsolved problems from MathWorld There are many unsolved problems in mathematics. Some prominent outstanding unsolved problems (as well as some which are not necessarily so well known) include http://rdre1.inktomi.com/click?u=http://mathworld.wolfram.com/UnsolvedProblems.h

88. Flooble Perplexus Logic Puzzles, Brainteasers, Riddles And Here, we collect all sorts of puzzles, from simple logic questions and word tricks to indepth math problems like probability and geometry. http://www.flooble.com/perplexus/&e=747

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All about flooble fun stuff Get a free chatterbox ... Avatars perplexus dot info Home Welcome to perplexus.info , flooble's perplexing puzzle portal. Here, we collect all sorts of puzzles, from simple logic questions and word tricks to in-depth math problems like probability and geometry. Click around and see if your brain is up to the task! If you're new here, make sure you sign up so that you can leave comments and submit your own problems! Categories All Problem Categories Latest: Sliding Puzzle (in General Here is one of the older sliding puzzles: You have a sliding puzzle that looks like this: AB C DE You may move a block with a letter on it to the blank space by sliding it there. How many moves does it take to put D where E is and E where D is at the same time? (The other pieces don't need to be in their original spots.) No Solution Yet, Comments Submitted on 2004-06-10 by Gamer Bonus: Plus and Minus (in Numbers Rating: 3.00 Frame at least 8 different equations by inserting plus and minus signs only into 1,2,3,4,5,6,7,8,9; to give a total of 100.

90. Prime Obsession: Bernhard Riemann And The Greatest Unsolved Problem In Mathemati with both Riemann s life and that problem proof of never proved the statement, and it remains unsolved to this alternating chapters of stepby-step math and a http://edifyingspectacle.org/thanks/asinsearch_0309085497/&e=747

Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics Edifying Spectacle Thanks for helping, Richard Home Book / Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics Search All categories Baby Books Classical Music DVD Electronics Kitchen Magazines Office Products Popular Music Computers Software Toys Videos Video Games Cell Phones Books, Music, DVD Books DVD Magazines Popular Music ... Outdoor Living In association with Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics Author: John Derbyshire Binding: Hardcover Published: 23 April, 2003 ISBN: Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics by: John Derbyshire Editorial Review: Bernhard Riemann was an underdog of sorts, a malnourished son of a parson who grew up to be the author of one of mathematics' greatest problems. In Prime Obsession , John Derbyshire deals brilliantly with both Riemann's life and that problem: proof of the conjecture, "All non-trivial zeros of the zeta function have real part one-half." Though the statement itself parses as nonsense to anyone but a mathematician, Derbyshire walks readers through the decades of reasoning that led to the Riemann Hypothesis in such a way as to clear it up perfectly. Riemann himself never proved the statement, and it remains unsolved to this day. Prime Obsession offers alternating chapters of step-by-step math and a history of 19th-century European intellectual life, letting readers take a breather between chunks of well-written information. Derbyshire's style is accessible but not dumbed-down, thorough but not heavy-handed. This is among the best popular treatments of an obscure mathematical idea, inviting readers to explore the theory without insisting on page after page of formulae.

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93. CNN.com - Russian May Have Solved Great Math Mystery - Jan. 7 This is arguably the most famous unsolved problem in math and has been for some time, said Bruce Kleiner, a University of Michigan math professor reviewing http://www.cnn.com/2004/US/West/01/07/math.mystery.ap/&e=747

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