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Perturbation or perturb may refer to: * Perturbation theory, mathematical methods that give approximate solutions to problems that cannot be solved exactly * Perturbation (geology), changes in the nature of alluvial deposits over time * Perturbation (astronomy), alterations to an object's orbit—e.g., caused by gravitational interactions with other bodies * Perturbation theory (quantum mechanics), a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one * Perturbation (biology), an alteration of the function of a biological system, induced by external or internal mechanisms * Perturbation (transport), operation of a transport system outside of timetable such that delays in arrival and departure from defined locations are present. * Perturbation function, mathematical function which relates the primal and dual problems. ==See also== * Annoy, annoyance * Disturbance (disambiguation) * Non-perturbative 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Perturbation」の詳細全文を読む スポンサード リンク
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