🌐فارسیEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسیहिन्दीไทย한국어中文日本語EntityQ236813· pop 46· linked from 111 articlesتابع علامتAlso known as signum function, sgn, signumتابعی فرد در ریاضیاتGallery (2)Available in 45 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةहिन्दीAlbanianConnectionsstep functionEntitysubderivativeEntityCategoriesSpecial functionsUnary operations