Cramér–Wold theorem

id: cram-r-wold-theorem-286-2086663
title: Cramér–Wold theorem
text: In mathematics, the Cramér–Wold theorem in measure theory states that a Borel probability measure on R k is uniquely determined by the totality of its one-dimensional projections. It is used as a method for proving joint convergence results. The theorem is named after Harald Cramér and Herman Ole Andreas Wold. Let and be random vectors of dimension k. Then X n converges in distribution to X if and only if: for each ∈ R k , that is, if every fixed linear combination of the coordinates of X n conv
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original url: https://en.wikipedia.org/wiki/Cram%C3%A9r%E2%80%93Wold_theorem
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date modified: 2023-08-21T19:39:51Z
main entity: {"identifier":"Q966837","url":"https://www.wikidata.org/entity/Q966837"}
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