🌐EnglishEnglishDeutschFrançaisItalianoNederlandsPortuguêsРусскийفارسی한국어中文日本語EntityQ1855669· pop 16· linked from 161 articlesinvariant theorymathematical study of invariants under symmetriesConnectionsInternational Standard Book NumberEntityDavid HilbertEntityCategoriesInvariant theory