Question: Name a mathematical function whose notation is made with a radical sign and that contains the word "root" in its name
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q47279819 . ?sbj wdt:P913 wd:Q11536248 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'root')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25