1. Sign functionIn mathematics, the sign function is an odd mathematical function that extracts the sign of a real number. To avoid confusion with the sine function, this function is often called the signum function. In mathematical expressions the sign function is often represented as sgn.
Read “Sign function” on English Wikipedia
Read “符号関数” on Japanese Wikipedia
Read “Sign function” on DBpedia
Read “Sign function” on English Wikipedia
Read “符号関数” on Japanese Wikipedia
Read “Sign function” on DBpedia
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