arXiv ID (P818)

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identifier of a document in arXiv pre-print archive
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arXiv ID
identifier of a document in arXiv pre-print archive

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    External identifier

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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 simple YYMM.NNNN. (English)
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    (\d{4}.\d{4,5}|[a-z\-]+(\.[A-Z]{2})?/\d{5}\d*)(v\d+)?
    without any "arXiv:" prefix (English)
    Understanding the arXiv identifier (English)
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