Spectrality of Moran-Type Measures Generated by Two-Element and Three-Element Digit Sets
Classical Analysis and ODEs
2026-07-25 v1 Combinatorics
Dynamical Systems
Functional Analysis
Abstract
The necessary and sufficient conditions for the Moran-type measures generated by two-element and three-element digit sets to be spectral have been given. The main result indicates that the spectrality of such a Moran-type measure is completely determined by the number of 2-factors and 3-factors in the zero set of the Fourier transform of each term in the convolution. The proof shows that, without the existence of Hadamard triples, the problem becomes much more complicated and difficult than the case with the existence of Hadamard triples.
Cite
@article{arxiv.2607.23071,
title = {Spectrality of Moran-Type Measures Generated by Two-Element and Three-Element Digit Sets},
author = {Yong-Shen Cao and Qi-Rong Deng and Ming-Tian Li},
journal= {arXiv preprint arXiv:2607.23071},
year = {2026}
}