Non‐Archimedean valued quasi‐invariant descending at infinity measures

Measures with values in non‐Archimedean fields, which are quasi‐invariant and descending at infinity on topological vector spaces over non‐Archimedean fields, are studied in this paper. Moreover, their characteristic functionals are considered. In particular, measures having convolution properties like classical Gaussian measures are investigated in the paper. Applications of such measures to pseudodifferential operators and stochastic processes are considered. Nevertheless, it is proved that there does not exist the complete non‐Archimedean analog of Gaussian measures. Theorems about either equivalence or orthogonality of measures from the considered class are proved. In addition, a pseudodifferentiability of such measures is investigated.

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