See Cauchy sequence in All languages combined, or Wiktionary
{ "etymology_text": "Named after French mathematician Augustin-Louis Cauchy (1789–1857), who made pioneering contributions to analysis.", "forms": [ { "form": "Cauchy sequences", "tags": [ "plural" ] } ], "head_templates": [ { "args": {}, "expansion": "Cauchy sequence (plural Cauchy sequences)", "name": "en-noun" } ], "lang": "English", "lang_code": "en", "pos": "noun", "senses": [ { "categories": [ { "kind": "other", "name": "English entries with incorrect language header", "parents": [ "Entries with incorrect language header", "Entry maintenance" ], "source": "w" }, { "kind": "other", "name": "Entries with translation boxes", "parents": [], "source": "w" }, { "kind": "other", "name": "Pages with 1 entry", "parents": [], "source": "w" }, { "kind": "other", "name": "Pages with entries", "parents": [], "source": "w" }, { "kind": "other", "name": "Terms with Danish translations", "parents": [], "source": "w" }, { "kind": "other", "name": "Terms with Finnish translations", "parents": [], "source": "w" }, { "kind": "other", "name": "Terms with German translations", "parents": [], "source": "w" }, { "kind": "other", "name": "Terms with Italian translations", "parents": [], "source": "w" }, { "kind": "other", "name": "Terms with Serbo-Croatian translations", "parents": [], "source": "w" }, { "kind": "other", "name": "Terms with Swedish translations", "parents": [], "source": "w" }, { "kind": "topical", "langcode": "en", "name": "Functional analysis", "orig": "en:Functional analysis", "parents": [ "Mathematical analysis", "Mathematics", "Formal sciences", "Sciences", "All topics", "Fundamental" ], "source": "w" }, { "kind": "topical", "langcode": "en", "name": "Mathematical analysis", "orig": "en:Mathematical analysis", "parents": [ "Mathematics", "Formal sciences", "Sciences", "All topics", "Fundamental" ], "source": "w" } ], "derived": [ { "tags": [ "adjective" ], "word": "Cauchy" } ], "examples": [ { "ref": "1955, [Van Nostrand], John L. Kelley, General Topology, Springer, published 1975, page 174:", "text": "However, it is possible to derive topological results from statements about Cauchy sequences; for example, a subset A of the space of real numbers is closed if and only if each Cauchy sequence in A converges to some point of A.", "type": "quote" }, { "ref": "2000, George Bachman, Lawrence Narici, Functional Analysis, page 52:", "text": "In the case of the real line, every Cauchy sequence converges; that is, being a Cauchy sequence is sufficient to guarantee the existence of a limit. In the general case, however, this is not so. If a metric space does have the property that every Cauchy sequence converges, the space is called a complete metric space.", "type": "quote" }, { "ref": "2012, David Applebaum, Limits, Limits Everywhere: The Tools of Mathematical Analysis, Oxford University Press, page 153:", "text": "Cantor first redefined Cauchy sequences using rational numbers only.[…]Cantor's idea was to define the real number line as the collection of all (rational) Cauchy sequences.", "type": "quote" } ], "glosses": [ "Any sequence x_n in a metric space with metric d such that for every ϵ>0 there exists a natural number N such that for all k,m>N, d(x_k,x_m)<ϵ." ], "id": "en-Cauchy_sequence-en-noun-cSaZasNj", "links": [ [ "mathematical analysis", "mathematical analysis" ], [ "metric space", "metric space" ] ], "raw_glosses": [ "(mathematical analysis) Any sequence x_n in a metric space with metric d such that for every ϵ>0 there exists a natural number N such that for all k,m>N, d(x_k,x_m)<ϵ." ], "related": [ { "word": "Cauchy convergence" }, { "word": "Cauchy filter" }, { "word": "Cauchy net" }, { "word": "Cauchy space" } ], "topics": [ "mathematical-analysis", "mathematics", "sciences" ], "translations": [ { "code": "da", "lang": "Danish", "sense": "sequence in a normed vector space", "tags": [ "common-gender" ], "word": "Cauchyfølge" }, { "code": "fi", "lang": "Finnish", "sense": "sequence in a normed vector space", "word": "Cauchyn jono" }, { "code": "de", "lang": "German", "sense": "sequence in a normed vector space", "tags": [ "feminine" ], "word": "Cauchy-Folge" }, { "code": "de", "lang": "German", "sense": "sequence in a normed vector space", "tags": [ "feminine" ], "word": "Cauchyfolge" }, { "code": "it", "lang": "Italian", "sense": "sequence in a normed vector space", "tags": [ "feminine" ], "word": "successione di Cauchy" }, { "code": "sh", "lang": "Serbo-Croatian", "sense": "sequence in a normed vector space", "tags": [ "masculine" ], "word": "Cauchyjev niz" }, { "code": "sv", "lang": "Swedish", "sense": "sequence in a normed vector space", "word": "Cauchyföljd" } ], "wikipedia": [ "Augustin-Louis Cauchy", "Cauchy sequence" ] } ], "word": "Cauchy sequence" }
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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-12-21 from the enwiktionary dump dated 2024-12-04 using wiktextract (d8cb2f3 and 4e554ae). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.
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