EntityQ2637908· pop 15· linked from 48 articlesorthogonal functionsSign in to savetype of functionConnectionsmathematicsEntitydifferential equationEntitydigital object identifierEntityintegralEntityvector spaceEntityscalar productEntityFourier seriesEntityintervalEntityHilbert spaceEntityeigenvectors and eigenvaluesEntitydomain of a functionEntitybasisEntitymonomialEntityharmonic analysisEntitynormEntityrational functionEntityGram-Schmidt processEntityLegendre polynomialEntityWileyEntityHermite polynomialEntityCategoriesFunctional analysisTypes of functions