🌐العربيةEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTürkçeРусскийالعربيةفارسی한국어中文日本語EntityQ599027· pop 31· linked from 176 articlesدالة توافقيةfunction with vanishing LaplacianAvailable in 31 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةBasqueCatalanConnectionsDirichlet's principleEntitymathematicsEntityCategoriesHarmonic functions