English
superrigidity
From super- + rigidity.
Proto-Indo-European *Hreyǵ-
Proto-Italic *rigēō
Latin rigeō ‘to be stiff’
Latin rigidus ‘stiff, rigid, hard, inflexible’
Latin rigiditas ‘stiffness, rigidity’
English rigidity
Today it means
noun In the theory of discrete groups, a concept designed to show how a linear representation ρ of a discrete group Γ inside an algebraic group G can, under some circumstances, be as good as a representation of G itself.
Sources
Sources: Wiktionary, “superrigidity”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / superrigidity