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Quaternionic Stockwell transform. (English) Zbl 1341.42005

Summary: In this article, we extend the Stockwell transform to the space of all square integrable quaternion-valued functions on the real line, using the convolution of quaternion-valued functions. We prove that the extended Stockwel transform satisfies the Parseval’s formula, inversion formula, and uncertainty principle. We also characterize the range of the Stockwell transform on \(L^2(\mathbb{R},\mathbb{H})\) and prove a convolution theorem for the extended Stockwell transform. Applying the convolution theorem, we extend the transform to a suitable Boehmian space of quaternion-valued functions.

MSC:

42A38 Fourier and Fourier-Stieltjes transforms and other transforms of Fourier type
44A15 Special integral transforms (Legendre, Hilbert, etc.)
44A35 Convolution as an integral transform
Full Text: DOI

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