# 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: 3 Search : nested
 nested   تو-در-تو   tu-dar-tuFr.: imbriqué   Math.: Of an ordered collection of terms, having the property that each term is contained in the preceding one. → nested function, → nested multiplication.From nest, from M.E., O.E. nest "bird's nest;" cf. M.L.G., M.Du. nest, Ger. Nest, ultimately from PIE *nizdo- (cf. Skt. nidah "resting place, nest," L. nidus "nest," O.C.S. gnezdo, O.Ir. net, Breton nez "nest"), probably from → ni- (PIE) + *sed- "sit" (cf. Pers. nešastan "to sit"), → lander.Tu-dar-tu literally "inside in inside," from tu "inside, in;" dar, → in-. nested function   کریای ِ تو-در-تو   karyâ-ye tu-dar-tuFr.: fonction imbriquée   In computer programing, a function that is defined inside the definition of another function.→ nested; → function. nested multiplication   بستایش ِ تو-در-تو   bastâyeš-e tu-dar-tuFr.: multiplication imbriquée   A method in the evaluation of polynomials which involves fewer basic operations and allows simpler computation, especially for polynomials of high degree. More specifically, the polynomial P(x) = a0 + a1x + a2x2 + a3x3 + ... + anxn can be written in the nested form as: P(x) = a0 + x(a1 + x(a2 + ... + x(an - 1 + anx) ...)). For example, the polynomial P(x) = x3 - 5x2 + 10x - 3 has the following nested form: P(x) = ((x - 5)x + 10)x - 3. Same as the → Ruffini-Horner method.→ nested; → multiplication.