User:Noosfractal/Unsolved problems in mathematics

Unsolved problems

• Is the Euler-Mascheroni constant a rational number?
• Is π a normal number?
• Are π and e algebraically independent?

Sites listing unsolved problems

• • article at mathworld http://mathworld.wolfram.com/UnsolvedProblems.html
• category page at mathworld http://mathworld.wolfram.com/topics/UnsolvedProblems.html
• http://directory.google.com/Top/Science/Math/Research/Open_Problems/
• The Open Problems Project http://maven.smith.edu/~orourke/TOPP/
• Kirby's 360 page list of open problems in Topology http://math.berkeley.edu/~kirby/
• Graph Theory and Combinatorics http://www.math.uiuc.edu/~west/openp/
• Open Problems Column Archive http://www.math.uiuc.edu/~west/pcol/pcolink.html
• Kimberling's Open Problems http://faculty.evansville.edu/ck6/integer/unsolved.html
• Eremenko's Open Problems http://www.math.purdue.edu/~eremenko/uns.html

• Eppstein's Open Problems in Geometry http://www.ics.uci.edu/~eppstein/junkyard/open.html
• Most wanted at mathpages.com http://www.mathpages.com/home/mwlist.htm

Books discussing unsolved problems

• Fan Chung; Ron Graham (1999). Erdos on Graphs : His Legacy of Unsolved Problems. AK Peters. ISBN 156881111X.{{cite book}}: CS1 maint: multiple names: authors list (link)
• Hallard T. Croft; Kenneth J. Falconer; Richard K. Guy (1994). Unsolved Problems in Geometry. Springer. ISBN 0387975063.{{cite book}}: CS1 maint: multiple names: authors list (link)
• Richard K. Guy (2004). Unsolved Problems in Number Theory. Springer. ISBN 0387208607.
• Victor Klee; Stan Wagon (1996). Old and New Unsolved Problems in Plane Geometry and Number Theory. The Mathematical Association of America. ISBN 0883853159.{{cite book}}: CS1 maint: multiple names: authors list (link)
• Florentin Smarandache (2000). Definitions, Solved and Unsolved Problems, Conjectures, and Theorems in Number Theory and Geometry. Amer Research. ISBN 187958574X.