characteristic function (probability theory)

GPTKB entity

Statements (29)
Predicate Object
gptkbp:instanceOf gptkb:mathematical_concept
gptkbp:alternativeTo moment generating function
gptkbp:appliesTo probability measure
random variable
gptkbp:author gptkb:Paul_Lévy
gptkbp:category mathematical analysis
probability distributions
gptkbp:codomain complex numbers
gptkbp:defines E[e^{itX}]
gptkbp:describes gptkb:organization
gptkbp:domain real numbers
gptkbp:field gptkb:probability_theory
statistics
gptkbp:heldBy Fourier transform of probability density function
https://www.w3.org/2000/01/rdf-schema#label characteristic function (probability theory)
gptkbp:inverse_transform inversion formula
gptkbp:notation φ_X(t)
gptkbp:property continuous
always exists
uniquely determines distribution
|φ_X(t)| ≤ 1
φ_X(0) = 1
gptkbp:relatedConcept gptkb:Laplace_transform
cumulant generating function
gptkbp:usedFor finding moments
proving limit theorems
studying distribution properties
gptkbp:bfsParent gptkb:Bochner's_theorem
gptkbp:bfsLayer 6