User:Noosfractal/Unsolved problems in mathematics

Sites listing unsolved problems

• MathWorld page on the topic - also references a number of books.
• Listing of pages in MathWorld's unsolved problems category
• Math/Research/Open_Problems/ at the Open Directory Project - with subsections on open problems in analysis, combinatorics, dynaical systems, geometry, graph theory, number theory and topology.
• The Open Problems Project at Smith
• Kirby's famous 360 page list of open problems in Topology
• Archive of the Open Problems column of the SIAM Newsletter
• Kimberling's open problems with rewards
• More open problems with rewards

Books discussing unsolved problems

• . ISBN 0387975063. {{cite book}}: Missing or empty |title= (help); Unknown parameter |Author= ignored (|author= suggested) (help); Unknown parameter |Publisher= ignored (|publisher= suggested) (help); Unknown parameter |Title= ignored (|title= suggested) (help); Unknown parameter |Year= ignored (|year= suggested) (help)
• . ISBN 0-12-345678-9. {{cite book}}: Missing or empty |title= (help); Unknown parameter |Author= ignored (|author= suggested) (help); Unknown parameter |Publisher= ignored (|publisher= suggested) (help); Unknown parameter |Title= ignored (|title= suggested) (help); Unknown parameter |Year= ignored (|year= suggested) (help)