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arXiv ID

identifier of a document in arXiv pre-print archive

Data type

External identifier

Statements

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Prior to April 2007, the identifiers included a classification, an optional two-letter subdivision, and a 7-digit YYMMNNN year, month, and sequence number of submission in that category. E.g. gr-qc/0610068 or math.GT/0309136. After April 2007, the format was changed to a YYMM.NNNN, from 2015 an additional digit was added making the format YYMM.NNNNN (English)
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http://api.semanticscholar.org/arXiv:$1
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(\d{4}.\d{4,5}|[a-z\-]+(\.[A-Z]{2})?\/\d{7})(v\d+)?
without any "arXiv:" prefix (English)
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Understanding the arXiv identifier (English)
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