🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtРусскийالعربيةفارسی한국어日本語EntityQ105769· pop 6· linked from 7 articlessystematicsstudy of systems and their application to the problem of understanding ourselves and the worldAvailable in 5 languagesAfrikaansBelarusianEstonianUkrainianvia Wikidata sitelinks · CC0Connectionssystems theoryEntitytype theoryEntityCategoriesFourth WaySystems theory