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arXiv · 2611.01128

Some Characterisations of the Strichartz Fourier Transform on the Heisenberg Group

R. Lakshmi Lavanya
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Abstract

Recently, Thangavelu introduced a scalar-valued Fourier transform on the Heisenberg group, built from the joint spectral theory of the sublaplacian and the central vector field. Around the same time, Krukowski characterised the classical Fourier transform on various groups from a small number of structural properties, paired with a normalisation hypothesis. In this paper, we obtain analogous results for the Strichartz Fourier transform on the Heisenberg group. Here, the spectral property is formulated jointly for the sublaplacian and the central vector field, and the translation property is based on a twisted form of left translation. The joint spectral property, paired with the twisted translation property and a normalisation at a single explicit test function, characterises the Strichartz Fourier transform on each ray of the underlying spectral set, the Heisenberg fan. The twisted translation property alone, paired with a Dirac delta property, already suffices. We also characterise the radial kernel of the transform on each ray by a Laguerre-type differential equation.

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R. Lakshmi Lavanya. 2026-10-31. Some Characterisations of the Strichartz Fourier Transform on the Heisenberg Group. https://arxiv.org/abs/2611.01128

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