Harmonic analysis on Euclidean spaces 3 Approximation theory 2 Approximations and expansions 2 Differential topology 2 Functional analysis 2 Functions of a complex variable 2 Functions of complex variables 2 Geometry, Differential 2 Harmonic analysis 2 Lattice theory 2 MATHEMATICS / Mathematical Analysis 2 Mathematical analysis 2 Mathematics 2 Metric spaces 2 Number theory 2 Operator theory 2 Probability theory and stochastic processes 2 Real functions 2 Topological Structures and spaces-- Knot theory-- Sheaf theory 2 Topological spaces 2 Vector valued functions 2 Abstract harmonic analysis -- Instructional exposition (textbooks, tutorial papers, etc.) 1 Calculus 1 Combinatorial analysis 1 Combinatorial packing and covering 1 Convex bodies 1 Economics, Mathematical 1 Equilibrium (Economics) 1 Euclidean algorithm 1 Euclidean space 1