Abstract
Let ξ 1, ξ2, ξ3 be independent random variables with values in a locally compact Abelian group X with nonvanishing characteristic functions, and aj, bj be continuous endomorphisms of X satisfying some restrictions. Let L1 = a1ξ 1+ a2 ξ2 + a3ξ 3, L2 = b1ξ 1 + b2ξ 2 + b3ξ 3. It was proved that the distribution of the random vector (L1, L2 ) determines the distributions of the random variables ξj up a shift. This result is a group analogue of the well-known C.R. Rao theorem. We also prove an analogue of another C.R. Rao's theorem for independent random variables with values in an a-adic solenoid.
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Feldman, G.M. On C.R. Rao’s Theorem for Locally Compact Abelian Groups. Dokl. Math. 99, 48–51 (2019). https://doi.org/10.1134/S1064562419010149
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DOI: https://doi.org/10.1134/S1064562419010149