Jisho

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正葉線
Wikipedia definition
1. Folium of DescartesIn geometry, the Folium of Descartes is an algebraic curve defined by the equation . It forms a loop in the first quadrant with a double point at the origin and asymptote . It is symmetrical about . The name comes from the Latin word folium which means "leaf". The curve was featured, along with a portrait of Descartes, on an Albanian stamp in 1966.
Read “Folium of Descartes” on English Wikipedia
Read “デカルトの正葉線” on Japanese Wikipedia
Read “Folium of Descartes” on DBpedia

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