Article
Keywords:
differential operators; Clifford analysis
Summary:
In this paper we consider operators acting on a subspace $\mathcal M$ of the space $L_2(\mathbb{R}^m;\mathbb{C}_m)$ of square integrable functions and, in particular, Clifford differential operators with polynomial coefficients. The subspace ${\mathcal M}$ is defined as the orthogonal sum of spaces ${\mathcal M}_{s,k}$ of specific Clifford basis functions of $L_2(\mathbb{R}^m;\mathbb{C}_m)$. Every Clifford endomorphism of ${\mathcal M}$ can be decomposed into the so-called Clifford-Hermite-monogenic operators. These Clifford-Hermite-monogenic operators are characterized in terms of commutation relations and they transform a space ${\mathcal M}_{s,k}$ into a similar space ${\mathcal M}_{s^{\prime }\!,k^{\prime }}$. Hence, once the Clifford-Hermite-monogenic decomposition of an operator is obtained, its action on the space ${\mathcal M}$ is known. Furthermore, the monogenic decomposition of some important Clifford differential operators with polynomial coefficients is studied in detail.
References:
[1] F. Brackx, R. Delanghe, F. Sommen:
Clifford Analysis. Pitman Publ., Boston-London-Melbourne, 1982.
MR 0697564
[2] F. Brackx, N. De Schepper, K. I. Kou, and F. Sommen: The Mehler formula for the generalized Clifford-Hermite polynomials. Acta Mathematica Sinica, Accepted.
[3] R. Delanghe, F. Sommen, and V. Souček:
Clifford Algebra and Spinor-Valued Functions. Kluwer Acad. Publ., Dordrecht, 1992.
MR 1169463