noun
lemniscate
A mathematical term for a figure-eight or infinity-shaped curve. Also referred to as 連珠形 (renjukei) in Japanese.
See also: 連珠形
ベルヌーイのレムニスケートは、極座標で r² = a² cos 2θ と表される。
The lemniscate of Bernoulli is expressed in polar coordinates as r² = a² cos 2θ.