In algebraic geometry, the lemniscate of Gerono, or lemniscate of Huygens, or figure-eight curve, is a plane algebraic curve of degree four and genus zero and is a lemniscate curve shaped like an ∞ {\displaystyle \infty } symbol, or figure eight. It has equation x 4 − x 2 + y 2 = 0.
In algebraic geometry, the lemniscate of Gerono, or lemniscate of Huygens, or figure-eight curve, is a plane algebraic curve of degree four and genus zero and is a lemniscate curve shaped like an ∞ {\displaystyle \infty } symbol, or figure eight. It has equation x 4 − x 2 + y 2 = 0.
Source: Wikipedia "Lemniscate of Gerono" · CC BY-SA 4.0
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