Unresolvable Identifier

arXiv:2605.17847 · detector doi_compliance · cross_source · 2026-05-20 01:04:53.196750+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.22049/cco.2023.28238.148' 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

N. Annamalai, On Zero-Divisor Graph of the ring Fp + uFp + u2Fp, Com- munications in Combinatorics and Optimization, 10(1), 151-163, 202 5, DOI: 10.22049/cco.2023.28238.148

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.22049/cco.2023.28238.148",
  "raw_excerpt": "N. Annamalai, On Zero-Divisor Graph of the ring Fp + uFp + u2Fp, Com- munications in Combinatorics and Optimization, 10(1), 151-163, 202 5, DOI: 10.22049/cco.2023.28238.148",
  "ref_index": 3,
  "verdict_class": "cross_source"
}