An Etymological Dictionary of Astronomy and AstrophysicsEnglish-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 4 Search : legend
 legend   چیروک   cirokFr.: légende   1) A non-historical or unverifiable story handed down by tradition from earlier times and popularly accepted as historical. 2) The body of stories of this kind, especially as they relate to a particular people, group, or clan (Dictionary.com).M.E. legende "written account of a saint's life," from O.Fr. legende and directly from M.L. legenda literally, "(things) to be read," noun use of feminine of L. legendus, gerund of legere "to read" (on certain days in church).Cirok, from Kurd. cirok "story, fable," related to Kurd. cir-, cirin "to sing, [to recite?];" Av. kar- "to celebrate, praise;" Proto-Ir. *karH- "to praise, celebrate;" cf. Skt. kar- "to celebrate, praise;" O.Norse herma "report;" O.Prussian kirdit "to hear;" PIE *kerH2- "to celebrate" (Cheung 2007). legendary   چیروکی   cirokiFr.: légendaire   Of, relating to, or of the nature of a legend.→ legend; → -ary. Legendre equation   هموگش ِ لوژاندر   hamugeš-e LegendreFr.: équation de Legendre   The → differential equation of the form: d/dx(1 - x2)dy/dx) + n(n + 1)y = 0. The general solution of the Legendre equation is given by y = c1Pn(x) + c2Qn(x), where Pn(x) are Legendre polynomials and Qn(x) are called Legendre functions of the second kind.Named after Adrien-Marie Legendre (1752-1833), a French mathematician who made important contributions to statistics, number theory, abstract algebra, and mathematical analysis; → equation. Legendre transformation   ترادیسش ِ لوژاندر   tarâdiseš-e LegendreFr.: transformation de Legendre   A mathematical operation that transforms one function into another. Two differentiable functions f and g are said to be Legendre transforms of each other if their first derivatives are inverse functions of each other: df(x)/dx = (dg(x)/dx)-1. The functions f and g are said to be related by a Legendre transformation.