🌐ไทยEnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsРусскийالعربيةไทย한국어中文日本語EntityQ780239· pop 17· linked from 135 articlesสัญกรณ์หลายดัชนีmathematical notationAvailable in 17 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةBulgarianCatalanConnectionsdifferential formEntitynatural numberEntityCategoriesCombinatoricsMathematical notation