Definition of "nonlinearity" []

• The state of being nonlinear (noun)
• A deviation from linearity (noun)

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• "Perhaps you may want to move at least some of "nonlinearity" earlier into the section."
• ""nonlinearity" only means "not being/using linear functions", and there is no proposal what should be put there."
• "The result of a system-nonlinearity can be represented by a simple polynomial, where the “variable” is the function representing the waveform (f (t))."