{
  "abstract": "We provide characterizations for when an exponential system with a structured spectrum forms a frame, a Riesz sequence, a Riesz basis, or an orthogonal basis on unions of translated domains. These characterizations are expressed in terms of the mapping properties of an associated matrix, with periodic spectra included as a special case.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Applied Mathematics, Pukyong National University, Busan 48513, Republic of Korea"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Dae Gwan Lee",
      "orcid": "0000-0002-0991-738X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/523mkmsrtyatn.bib",
  "cited_by": 0,
  "doi": "10.3390/math14213917",
  "fulltext_url": null,
  "id": "523mkmsrtyatn",
  "issns": [
    "2227-7390"
  ],
  "landing_url": "https://www.mdpi.com/2227-7390/14/21/3917",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2604|Mathematical Analysis and Transform Methods"
    ]
  ],
  "openalex": "W7224022228",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/523mkmsrtyatn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:29Z",
      "native_id": "10.3390/math14213917",
      "source": "crossref",
      "url": "https://www.mdpi.com/2227-7390/14/21/3917"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "openalex:2604|Mathematical Analysis and Transform Methods",
      "subfield": "general"
    }
  ],
  "title": "Characterization of Structured Exponential Systems",
  "title_text": "Characterization of Structured Exponential Systems",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:29Z",
  "url": "https://research.draconitic.com/paper/523mkmsrtyatn",
  "venue": "Mathematics",
  "versions": []
}