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Unsolved Problems:     more books (100)

Unsolved Problems in Number Theory (Problem Books in Mathematics) (v. 1) by Richard K. Guy, 1994-07 Old and New Unsolved Problems in Plane Geometry and Number Theory (Dolciani Mathematical Expositions) by Victor Klee, Stan Wagon, 1996-09-05 Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics by John Derbyshire, 2004-05-25 Ball Lightning: An Unsolved Problem in Atmospheric Physics by Mark Stenhoff, 2010-11-02 Unsolved Problems in Geometry (Problem Books in Mathematics / Unsolved Problems in Intuitive Mathematics) by Hallard T. Croft, Kenneth J. Falconer, et all 1991-05-28 Unsolved Problems in Mathematical Systems and Control Theory The World's 20 Greatest Unsolved Problems by John R. Vacca, 2004-07-07 The Millennium Problems: The Seven Greatest Unsolved Mathematical Puzzles Of Our Time by Keith J. Devlin, 2003-10-16 The Five Biggest Unsolved Problems in Science by Arthur W. Wiggins, Charles M. Wynn, 2003-09-12 Unsolved Problems in Astrophysics The Riemann Hypothesis: The Greatest Unsolved Problem in Mathematics by Karl Sabbagh, 2004-05-26 Unsolved Problems in Stellar Evolution (Space Telescope Science Institute Symposium Series) Unsolved Problems in Number Theory (Problem Books in Mathematics / Unsolved Problems in Intuitive Mathematics) by Richard Guy, 2004-07-13 Unsolved Problems Of Science by A.W. Haslett, 2007-03-15

lists with details

1. UNSOLVED PROBLEMS AND REWARDS
   By Clark Kimberling. Offers prizes for solutions of some problems in number theory.  
   http://faculty.evansville.edu/ck6/integer/unsolved.html
   
   Extractions: Stated below are a few challenging problems. If you are first to publish a solution, let me know, and collect your reward! 1. The Kolakoski sequence: This sequence is is identical to its own runlength sequence. Reward: $200.00 for publishing a solution of any one of the five problems stated in Integer Sequences and Arrays. The sequence originates in William Kolakoski , "Self generating runs, Problem 5304," American Mathematical Monthly 72 (1965) 674. For a proof that the Kolakoski sequence is not periodic, see the same Monthly See also Kolakoski Sequence (Eric Weisstein's The World of Mathematics

2. Favorite Unsolved Problems
   Alexandre Eremenko (Purdue University). Mainly in analysis.  
   http://www.math.purdue.edu/~eremenko/

3. Unsolved Problems In OR
   unsolved problems in OR. This page contains a list of open problems that I find intriguing. They are not as difficult or as significant as the question of  
   http://www.statslab.cam.ac.uk/~rrw1/research/unsolved.html
   
   Extractions: This page contains a list of open problems that I find intriguing. They are not as difficult or as significant as the question of whether P does or not equal NP. But these are problems that are easy to state and understand, but whose solution has defied the efforts of good researchers over a number of years. Most of these problems are in the realm of stochastic optimization. I would love to see a solution to any of these problems. This page is under construction. I plan to write something about the following problems, and others, in due course. The bomber problem See description The rendezvous problem See description Search for a moving target See abstract Non-preemptive release of stochastic jobs to uniform machines See abstract The unimportance of inserted idle time in non-preemptive stochastic scheduling to minimize flow time on parallel machines home page

4. Some Unsolved Problems
   Of course, this is not a complete list of all unsolved problems in mathematics. For instance, I omitted those problems which everybody knows anyway (like  
   http://www.math.unibas.ch/~winkel/problem.html

5. Unsolved Problems In Function Theory
   My favorite unsolved problems. Prize policies when applicable, a prize for the problem will be payed with a check in US dollars to the first person who  
   http://www.math.purdue.edu/~eremenko/uns.html
   
   Extractions: My favorite unsolved problems Prize policies: when applicable, a prize for the problem will be payed with a check in US dollars to the first person who sends me a complete solution which I will verify and recognize as correct. GEOMETRIC FUNCTION THEORY AND POTENTIAL THEORY: ps pdf Some constants studied by Littlewood (Updated Oct 2002).

6. Unsolved Problems And Conjectures
   Regarding equal sums of like powers, compiled by Chen Shuwen.  
   http://euler.free.fr/eslp/unsolve.htm
   
   Extractions: Unsolved Problems and Conjectures The Prouhet-Tarry-Escott Problem Is it solvable in integers for any n How to find new solutions for n = 10 and How to find the general solution for n How to find a new solution of the type ( k =1, 2, 3, 4, 5, 6, 7, 8 ) How to find non-symmetric ideal solutions of ( k =1, 2, 3, 4, 5, 6, 7, 8 ) and ( k =1, 2, 3, 4, 5, 6, 7, 8, 9 ) How to find a solution chain of the type ( k = 1, 2, 3, 4 ) Some other open problems are present on Questions by Lander-Parkin-Selfrige (1967) a k + a k + ... + a m k = b k + b k + ... + b n k Is ( k m n ) always solvable when m n k Is it true that ( k m n ) is never solvable when m n k For which k m n such that m n k is ( k m n ) solvable ?

7. Overview Of "Mathematician's Secret Room"
   unsolved problems in Number Theory. English and Japanese text by Hisanori Mishima.  
   http://www.asahi-net.or.jp/~KC2H-MSM/mathland/overview.htm

8. Unsolved Problem Of The Week Archive
   A list of unsolved problems published by MathPro Press during 1995.  
   http://cage.rug.ac.be/~hvernaev/problems/archive.html
   
   Extractions: Each week, for your edification, we publish a well-known unsolved mathematics problem. These postings are intended to inform you of some of the difficult, yet interesting, problems that mathematicians are investigating. We give a reference so that you can get more information about the topic. These problems can be understood by the average person. Nevertheless, we do not suggest that you tackle these problems, since mathematicians have been unsuccessfully working on these problems for many years. Should you wish to discuss aspects of these problems with others, one of the newsgroups, such as sci.math , might be the appropriate forum. 3-Sep-1995 Problem 36 : Primes of the form n^n+1 27-Aug-1995 Problem 35 : Must one of n points lie on n/3 lines? 20-Aug-1995 Problem 34 : Squares with Two Different Decimal Digits 13-Aug-1995 Problem 33 : Unit Triangles in a Given Area 6-Aug-1995 Problem 32 : Can the Cube of a Sum Equal their Product 30-Jul-1995 Problem 31 : Different Number of Distances 23-Jul-1995 Problem 30 : Sum of Four Cubes 16-Jul-1995 Problem 29 : Fitting One Triangle Inside Another 9-Jul-1995 Problem 28 : Expressing 3 as the Sum of Three Cubes 2-Jul-1995 Problem 27 : Factorial that are one less than a Square 25-Jun-1995 Problem 26 : Inscribing a Square in a Curve 18-Jun-1995 Problem 25 : The Collatz Conjecture 11-Jun-1995 Problem 24 : Primes Between Consecutive Squares 4-Jun-1995 Problem 23 : Thirteen Points on a Sphere 28-May-1995

9. Unsolved Problems -- From MathWorld
   Some prominent outstanding unsolved problems (as well as some which are not Classic texts on unsolved problems in various areas of mathematics are Croft  
   http://mathworld.wolfram.com/UnsolvedProblems.html
   
   Extractions: MATHWORLD - IN PRINT Order book from Amazon Foundations of Mathematics Mathematical Problems Unsolved Problems Unsolved Problems There are many unsolved problems in mathematics. Some prominent outstanding unsolved problems (as well as some which are not necessarily so well known) include 1. The Goldbach conjecture 2. The Riemann hypothesis 3. The 4. The conjecture that there exists a Hadamard matrix for every positive multiple of 4. 5. The twin prime conjecture (i.e., the conjecture that there are an infinite number of twin primes 6. Determination of whether NP-problems are actually P-problems 7. The Collatz problem 8. Proof that the 196-algorithm does not terminate when applied to the number 196. 9. Proof that 10 is a solitary number 10. Finding a formula for the probability that two elements chosen at random generate the symmetric group 11. Solving the

10. Unsolved Problems
    unsolved problems. You can contact Stephen C. Locke at LockeS@fau.edu. Several people have asked me about unsolved problems.  
    http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Unsolved Problems -- From MathWorld
    Full Reptend Prime Pillai s Conjecture Universal Turing Machine Gelfand s Question Poincaré Conjecture unsolved problems  
    http://mathworld.wolfram.com/topics/UnsolvedProblems.html

12. The Geometry Junkyard Open Problems
    unsolved problems. Naoki Sato lists several conundrums from elementary geometry and number theory.  
    http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

13. Welcome To Mathsoft
    s of some unsolved problems and numerous links to other collections.Compiled by Steven Finch.  
    http://www.mathsoft.com/mathresources/problems/

14. Some Unsolved Problems
    they are all unsolved. Of course, this is not a complete list of all unsolved problems in mathematics. For instance, I omitted those problems  
    http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

15. Unsolved Problems
    Including the list of 50 problems of Bondy and Murty with current status. Compiled by Stephen C. Locke.  
    http://www.math.fau.edu/locke/unsolved.htm
    
    Extractions: You can contact Stephen C. Locke at LockeS@fau.edu Several people have asked me about unsolved problems. I will take the easy way out: see the list of 50 problems in Bondy and Murty . You can now see the list as it originally appeard in the the text, Graph Theory with Applications . (May, 2004: The authors are writing the next edition of the book.) Some of these problems have been solved (and thus the title is slightly incorrect) and I won't claim to be familiar with all current results. If you find that one of them has been solved (or even that some reasonable progress has been made), please e-mail me . Also, I'm not giving you all of the references in Bondy and Murty . You should get yourself a copy of that book (or look at the online version).

16. Clay Mathematics Institute
    Are there still unsolved problems about the numbers 1, 2, 3, 4, ?, public lecture by Barry Mazur with figures by William Stein.  
    http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

17. Mathsoft Mathsoft Unsolved Problems
    s of some unsolved problems and numerous links to other collections.Compiled by Steven Finch.  
    http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

18. Unsolved Problems
    unsolved problems. You can contact Stephen C. Locke at LockeS@fau.edu. Several people have asked me about unsolved problems. I will take the easy way out  
    http://www.math.fau.edu/locke/Unsolved.htm
    
    Extractions: You can contact Stephen C. Locke at LockeS@fau.edu Several people have asked me about unsolved problems. I will take the easy way out: see the list of 50 problems in Bondy and Murty . You can now see the list as it originally appeard in the the text, Graph Theory with Applications . (May, 2004: The authors are writing the next edition of the book.) Some of these problems have been solved (and thus the title is slightly incorrect) and I won't claim to be familiar with all current results. If you find that one of them has been solved (or even that some reasonable progress has been made), please e-mail me . Also, I'm not giving you all of the references in Bondy and Murty . You should get yourself a copy of that book (or look at the online version).

19. Open Problems List
    A collection of papers outlining unsolved problems maintained at Stony Brook.  
    http://www.math.sunysb.edu/dynamics/open.html

20. Open Problems For Undergraduates
    background, and may readily be understood and worked on by anyone who is eager to think about interesting and unsolved mathematical problems.  
    http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

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