Fourier analysis 9 Functional analysis 8 Mathematics 7 Number theory 7 Mathematical analysis 6 Geometry, Algebraic 4 Probabilities 4 Algebraic fields 3 Commutative algebra 3 Galois theory 3 Group theory 3 Lie groups 3 Mathematical optimization 3 Ergodic theory 2 Functions of complex variables 2 Lie algebras 2 Measure theory 2 Operator theory 2 Representations of groups 2 Rings (Algebra) 2 Stochastic processes 2 Topology-- Mathematics 2 Algebra 1 Algebra, Abstract 1 Algebra, Homological 1 Algebraic Geometry 1 Algebraic functions 1 Algebraic geometry 1 Algebraic number theory 1 Algebraic number theory-- Invariant theory-- P-adic numbers-- Quadratic forms-- Algebraic function 1