Unresolvable Identifier

arXiv:2604.17904 · detector doi_compliance · cross_source · 2026-05-20 04:36:46.098884+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1016/j.na.2025.1139211' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.

Paper page Integrity report arXiv Try DOI

Evidence text

Nugraheni, S., & Giordano, P. (2026a). Dirac delta as a generalized holomorphic function. Nonlinear Analysis, 262.https://doi.org/10.1016/j.na.2025.1139211, 2, 5, 16, 20, 22, 23, 25, 31, 32

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1016/j.na.2025.1139211",
  "raw_excerpt": "Nugraheni, S., & Giordano, P. (2026a). Dirac delta as a generalized holomorphic function. Nonlinear Analysis, 262.https://doi.org/10.1016/j.na.2025.1139211, 2, 5, 16, 20, 22, 23, 25, 31, 32",
  "ref_index": 9,
  "verdict_class": "cross_source"
}