isogeny

- group, ∞-group
- group object, group object in an (∞,1)-category
- abelian group, spectrum
- group action, ∞-action
- representation, ∞-representation?
- progroup
- homogeneous space

A homomorphism between algebraic groups that is a surjection and has a finite kernel.

- Wikipedia,
*Isogeny*

Examples of sporadic (exceptional) isogenies from spin groups onto orthogonal groups are discussed in

- Paul Garrett,
*Sporadic isogenies to orthogonal groups*, July 2013 (pdf)

Last revised on June 13, 2014 at 04:36:34. See the history of this page for a list of all contributions to it.