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関数
Wikipedia definition
1. Ramp functionThe ramp function is an elementary unary real function, easily computable as the mean of its independent variable and its absolute value. This function is applied in engineering (e.g. , in the theory of DSP). The name ramp function can be derived by the look of its graph.
Read “Ramp function” on English Wikipedia
Read “ランプ関数” on Japanese Wikipedia
Read “Ramp function” on DBpedia

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