functional analysis
branch of mathematical analysis concerned with infinite-dimensional topological vector spaces, often spaces of functions
uniform algebra
mathematical concept in functional analysis
nonlinear functional analysis
branch of mathematical analysis
density functional theory
computational quantum mechanical modelling method to investigate the electronic structure
Compression as functional analysis
the restriction of an operator on a Hilbert space to a subspace, obtained by orthogonal projection
operator theory
mathematical study of linear operators on function spaces, such as differential operators and integral operators