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  2. Nonlinearity (journal) - Wikipedia

    en.wikipedia.org/wiki/Nonlinearity_(journal)

    Nonlinearity is a peer-reviewed scientific journal published by IOP Publishing and the London Mathematical Society. The journal publishes papers on nonlinear mathematics, mathematical physics , experimental physics , theoretical physics and other areas in the sciences where nonlinear phenomena are of fundamental importance.

  3. Non-linear least squares - Wikipedia

    en.wikipedia.org/wiki/Non-linear_least_squares

    Non-linear least squares is the form of least squares analysis used to fit a set of m observations with a model that is non-linear in n unknown parameters (m ≥ n). It is used in some forms of nonlinear regression. The basis of the method is to approximate the model by a linear one and to refine the parameters by successive iterations.

  4. Nonlinear system - Wikipedia

    en.wikipedia.org/wiki/Nonlinear_system

    In mathematics and science, a nonlinear system (or a non-linear system) is a system in which the change of the output is not proportional to the change of the input. [1] [2] Nonlinear problems are of interest to engineers, biologists, [3] [4] [5] physicists, [6] [7] mathematicians, and many other scientists since most systems are inherently nonlinear in nature. [8]

  5. Nonlinear regression - Wikipedia

    en.wikipedia.org/wiki/Nonlinear_regression

    In statistics, nonlinear regression is a form of regression analysis in which observational data are modeled by a function which is a nonlinear combination of the model parameters and depends on one or more independent variables. The data are fitted by a method of successive approximations (iterations).

  6. Journal entry - Wikipedia

    en.wikipedia.org/wiki/Journal_entry

    A journal entry is the act of keeping or making records of any transactions either economic or non-economic. Transactions are listed in an accounting journal that shows a company's debit and credit balances. The journal entry can consist of several recordings, each of which is either a debit or a credit. The total of the debits must equal the ...

  7. Nonlinear optics - Wikipedia

    en.wikipedia.org/wiki/Nonlinear_optics

    Structure of KTP crystal, viewed down b axis, used in second harmonic generation.. Nonlinear optics (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the polarization density P responds non-linearly to the electric field E of the light.

  8. White test - Wikipedia

    en.wikipedia.org/wiki/White_test

    Conversely, a “large" R 2 (scaled by the sample size so that it follows the chi-squared distribution) counts against the hypothesis of homoskedasticity. An alternative to the White test is the Breusch–Pagan test, where the Breusch-Pagan test is designed to detect only linear forms of heteroskedasticity. Under certain conditions and a ...

  9. Wikipedia : WikiProject Mathematics/List of mathematics ...

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    Notakto-- Notation for differentiation-- Notation in probability and statistics-- Nothing up my sleeve number-- Notices of the American Mathematical Society-- Notre Dame Journal of Formal Logic-- Nottingham group-- Nouvelles Annales de Mathématiques-- Nouvelles tables d'intégrales définies-- Nova fractal-- Nova Methodus pro Maximis et ...

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