Summary
The main aim of the paper is to prove still another version of the Lévy--Khintchine decomposition of conditionally positive definite functions on a general locally compact Abelian group. The exposition is based on the two-cones theorem proved by N. Drumm in 1976. Application of the main result to the Euclidean group shows the novelty of the approach.
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Heyer, H. On the Lévy-Khintchine decomposition of conditionally positive definite functions. Period Math Hung 52, 19–40 (2006). https://doi.org/10.1007/s10998-006-0003-6
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DOI: https://doi.org/10.1007/s10998-006-0003-6