An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

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-.

In computer programing, a function that is defined inside the definition of another function.

→ nested; → function.

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 + ... + a_nxⁿ can be written in the nested form as: P(x) = a₀ + x(a₁ + x(a₂ + ... + x(a_{n - 1} + a_nx) ...)). 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.