Recoverable Identifier

arXiv:2604.23409 · detector doi_compliance · incontrovertible · 2026-05-19 23:06:17.808538+00:00

advisory doi_compliance recoverable_identifier

DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.4064/fm-16-1-140-15023) was visible in the surrounding text but could not be confirmed against doi.org as printed.

Paper page Integrity report arXiv Try DOI

Evidence text

S. M. Ulam. Zur Maßtheorie in der allgemeinen Mengenlehre.Funda- menta Mathematicae. 1930. Vol.16, No.1. Pp.140–150. DOI: 10.4064/fm- 16-1-140-150 23

Evidence payload

{
  "printed_excerpt": "S. M. Ulam. Zur Ma\u00dftheorie in der allgemeinen Mengenlehre.Funda- menta Mathematicae. 1930. Vol.16, No.1. Pp.140\u2013150. DOI: 10.4064/fm- 16-1-140-150 23",
  "reconstructed_doi": "10.4064/fm-16-1-140-15023",
  "ref_index": 11,
  "resolved_title": null,
  "verdict_class": "incontrovertible"
}