🌐EnglishEnglishDeutschFrançaisItalianoNederlandsPolskiРусский한국어中文EntityQ361254· pop 12· linked from 23 articlesCharacteristic functionWikimedia disambiguation pageAvailable in 12 languagesFrançaisDeutsch中文РусскийItalianoCatalanEsperantoPolskiSlovakSlovenianConnectionsmathematicsEntitylinear algebraEntity