Robuta

https://mathworld.wolfram.com/Crookedness.html Crookedness -- from Wolfram MathWorld Let a knot K be parameterized by a vector function v(t) with t in S^1, and let w be a fixed unit vector in R^3. Count the number of local minima of the... wolframmathworld https://mg.wiktionary.org/wiki/crookedness crookedness - Wikibolana, raki-bolana malalaka wikibolanaraki