
doi: 10.1007/bf02487241
Let \(Q\) be a separable metric complete space with a Borel probability measure \(\rho\). The author treats here generalized translation operators, i.e. a family \(\{T_x\}\) of linear operators possessing the properties: \(\forall f\in C(Q)\), \(T_xf(y)= T_yf(x)\), \(x,y\in Q\), \(T_e= \text{id}.\), locality, and continuity. Character \(\chi(x,\lambda)\), \(\lambda\in N_0\) is \(0\not\equiv \chi\in C(Q)\) satisfying \(T_x\chi(y)= \chi(x)\cdot\chi(y)\), \(\chi(x,0)= 1\), where \(N_0\): a complex Hilbert space in a chain by \((N_p, N_{-p})\). Delsarte characters: \(\chi(x,\lambda)= \sum_{n=0\sim\infty}\langle \lambda^{\otimes n},\chi_n(x)\rangle\), and Appel characters: \(\sigma(x,\lambda)= \chi(x,\lambda)/\langle\langle\ell, \overline{\chi(\cdot,\lambda)}\rangle\rangle= \sum_{n= 0\sim\infty} \langle\lambda^{\otimes n}, P_n(x)\rangle/n!\). He gives Delsarte spaces \(H^\chi(p,q)\), \(H^x(-p,-q)= (H^\chi(p,q))'\) and Appel spaces \(H^P(p,q)\), \(H^P(-p,-q)\) as follows: \(\phi^n(x)= \langle\chi_n(x), a^n\rangle\), \(a^n\in N_p^{\widehat\otimes n}\), \(H^\chi(p,q)= \left\{\sum_{n= 0\sim\infty} \phi^n(x); \sum_{n= 0\sim\infty}\|\phi^n\|^2\cdot(n!)^2\cdot K^{qn}< \infty\right\}\). Appel characters turn into Delsarte characters by C-transform. Appel (Delsarte) cocharacters turn into powers by S-Tr. (T-Tr.). \(S\xi(\lambda)= \int\overline{\sigma(x, \overline\lambda)}\cdot\xi(x) d\rho(x)= \sum_{n= 0\sim\infty}\langle \lambda^{\otimes n}, \alpha^n\rangle\), \(\xi\in H^P(- p,-q)\). Wick product is also given by \(S^{-1}(S\xi(\lambda)\cdot S\eta(\lambda))\).
C-transform, Delsarte distribution, Distributions on infinite-dimensional spaces, Delsarte spaces, Probability theory on linear topological spaces, biorthogonal system, generalized translation operators, Appell system, Measures and integration on abstract linear spaces, General harmonic expansions, frames, Appel characters, generalized translation, Gaussian measure, Set functions and measures and integrals in infinite-dimensional spaces (Wiener measure, Gaussian measure, etc.), Appel spaces, Delsarte characters, white noise, Harmonic analysis on hypergroups
C-transform, Delsarte distribution, Distributions on infinite-dimensional spaces, Delsarte spaces, Probability theory on linear topological spaces, biorthogonal system, generalized translation operators, Appell system, Measures and integration on abstract linear spaces, General harmonic expansions, frames, Appel characters, generalized translation, Gaussian measure, Set functions and measures and integrals in infinite-dimensional spaces (Wiener measure, Gaussian measure, etc.), Appel spaces, Delsarte characters, white noise, Harmonic analysis on hypergroups
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