Geometry 9 Mathematics 8 Mathematics, Greek 7 History 5 Differential equations 4 Differential equations, Partial 4 Algebra 3 Functions 3 Functions of complex variables 3 Group theory 3 Mathematical physics 3 Matrices 3 Numerical analysis 3 Vector analysis 3 Algebras, Linear 2 Calculus of tensors 2 Functional analysis 2 Iterative methods (Mathematics) 2 Mathematical recreations 2 Number theory 2 Philosophy 2 Symmetry (Physics) 2 Algebra, Boolean 1 Algorithms 1 Analytic functions 1 Approximation theory 1 Biography 1 Boundary value problems 1 Calculus of variations 1 Combinatorial optimization 1