olemus
ruumilise kõverusega joon
= a curve which does not lie in a plane

näiteid
https://duckduckgo.com/?t=h_&q=twisted+curve&iax=images&ia=images

ülevaateid
https://www.universiteitleiden.nl/binaries/content/assets/science/mi/scripties/master/algant/2017-2018/monavari-master-thesis.pdf
https://www.johndcook.com/blog/2019/07/23/twisted-elliptic-curves/