Riesz basis of exponentials for a union of cubes in R^{d}

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/107523We extend to several dimensions the result of K. Seip and Y.I. Lyubarskii that proves the existence of Riesz basis of exponentials for a finite union of intervals with equals lengths.18 pages, 1 figureFunctional AnalysisGeneral Mathematics94A20; 30E05; 46E22; 30H05Riesz basis of exponentials for a union of cubes in R^{d}text