Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
arXiv
open-in-new
<p>arXiv (pronounced as "<a href="/facts/Archive/BgCG3dxa">archive</a>"—the X represents the <a href="/facts/Chi_(letter)/pj4UT8Pf">Greek letter chi</a> ⟨χ⟩) is an <a href="/facts/Open-access_repository/Uqv57rH5">open-access repository</a> of electronic <a href="/facts/Preprint/ryoUUpCg">preprints</a> and <a href="/facts/Postprints/1dySf2Q1">postprints</a> (known as <a href="/facts/E-prints/kEyHn9Mt">e-prints</a>) approved for posting after moderation, but not <a href="/facts/Scholarly_peer_review/ufyrXAkW">peer reviewed</a>. It consists of <a href="/facts/Scientific_papers/nJh0Bx22">scientific papers</a> in the fields of <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, <a href="/facts/Physics/a7aH2y08">physics</a>, <a href="/facts/Astronomy/0ArJVM1p">astronomy</a>, <a href="/facts/Electrical_engineering/YYXW1KLW">electrical engineering</a>, <a href="/facts/Computer_science/lN3pEyPz">computer science</a>, <a href="/facts/Quantitative_biology/515qUp7w">quantitative biology</a>, <a href="/facts/Statistics/DNPsKGYU">statistics</a>, <a href="/facts/Mathematical_finance/P9otEltQ">mathematical finance</a>, and <a href="/facts/Economics/HYctA2Dn">economics</a>, which can be accessed online. In many fields of mathematics and physics, almost all scientific papers are <a href="/facts/Self-archiving/yPp2AAea">self-archived</a> on the arXiv repository before publication in a peer-reviewed journal. Some publishers also grant permission for authors to archive the peer-reviewed <a href="/facts/Postprint/1dySf2Q1">postprint</a>. Begun on August 14, 1991, arXiv.org passed the half-million-article milestone on October 3, 2008, had hit a million by the end of 2014 and two million by the end of 2021. As of November 2024, the submission rate is about 24,000 articles per month. </p>