🌐EnglishEnglishPortuguêsTürkçe日本語EntityQ5358906· pop 5· linked from 316 articleselementary function arithmeticsystem of arithmetic in proof theiryAvailable in 5 languages日本語PortuguêsCzechTürkçevia Wikidata sitelinks · CC0Connectionssemantic theory of truthEntitymathematical logicEntityCategoriesConjecturesFormal theories of arithmeticProof theory