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Open Problems

Sites referring to open problems in mathematical research. Those referring to a specific area should be submitted to that category: there is also a recereational category.

Sites in Open Problems

Mathematical Problems
In various subjects, compiled by Torsten Sillke.
Some Unsolved Problems with Elementary Formulation
Statements of some famous problems compiled by Frank Wikstrom, Ume� University.
Unsolved Problem of the Week Archive
A list of unsolved problems published by MathPro Press during 1995.
Most Wanted List
Elementary unsolved problems in mathematics, listed at the MathPages archive.
Unsolved Mathematics Problems
Compiled by Steven Finch. Descriptions of some unsolved problems and numerous links to other collections.
Millennium Prize Problems
The seven problems proposed by the Clay Mathematics Institute: P versus NP; Hodge Conjecture; Poincaré Conjecture; Riemann Hypothesis; Yang-Mills Existence and Mass Gap; Navier-Stokes Existence and Smoothness; Birch and Swinnerton-Dyer Conjecture. Resources include articles on each problem by leading researchers.

other references

Science : Math : Analysis : Open Problems Science : Math : Analysis : Open Problems
Science : Math : Combinatorics : Graph Theory : Open Problems Science : Math : Combinatorics : Graph Theory : Open Problems
Science : Math : Combinatorics : Open Problems Science : Math : Combinatorics : Open Problems
Science : Math : Differential Equations : Dynamical Systems : Open Problems Science : Math : Differential Equations : Dynamical Systems : Open Problems
Science : Math : Geometry : Open Problems Science : Math : Geometry : Open Problems
Science : Math : Number Theory : Open Problems Science : Math : Number Theory : Open Problems
Science : Math : Topology : Open Problems Science : Math : Topology : Open Problems
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