List of unsolved problems in mathematicsW
List of unsolved problems in mathematics
Beggar-my-neighbourW
Beggar-my-neighbour
Burnside problemW
Burnside problem
Divisor summatory functionW
Divisor summatory function
Invariant subspace problemW
Invariant subspace problem
Lucas numberW
Lucas number
Magic squareW
Magic square
Navier–Stokes existence and smoothnessW
Navier–Stokes existence and smoothness
P versus NP problemW
P versus NP problem
Pell numberW
Pell number
Water retention on mathematical surfacesW
Water retention on mathematical surfaces