olemus
algebraliste rühmade epimorfism, mille tuum on lõplik

Wiktionary:
2. (algebraic geometry, category theory) an epimorphism of group schemes that is surjective and has a finite kernel

ülevaateid
https://mathworld.wolfram.com/Isogeny.html

https://encyclopediaofmath.org/wiki/Isogeny

https://en.wikipedia.org/wiki/Isogeny

https://www.sagemath.org/files/thesis/shumow-thesis-2009.pdf

rakendusi
- isogeenkrüptograafia