. "Dirac delta impulse" . "Dirac masses" . "point measures" . "nascent Dirac delta function" . "identity" . "delta" . "Dirac" . "impulses" . . "Dirac's \\\"function\\\"" . . "pulse" . . "sharp spike" . "Dirac delta \\\"function\\\"" . . . . "\u03B4-functions" . "Dirac delta function#nascent delta function" . . "dirac impulses" . . "Dirac delta" . "unit impulse" . "impulse signal" . "approximation to the identity" . . "Dirac's \\\"delta function\\\"" . . . . . "dirac delta function" . "Dirac Delta" . "Fourier representation of the delta function" . "impulse function" . "Dirac pulse" . "delta impulse" . "Dirac -function" . . . . "Dirac measures" . . "Dirac impulse function" . "Dirac delta function#As a measure" . . . . "delta functions" . . "Dirac delta function" . "Dirac delta function" . "unit point mass" . "Dirac impulses" . "Dirac impulse" . "sifting property" . . . . "delta function" . "Dirac_delta_function#Translation" . "-function" . . "generalizations of the Dirac delta function" . "Dirac function" . "''δ''_''x''" . "nascent delta function" . "Dirac delta distribution" . . "Dirac's delta function" . "impulse" .