counitary en · ADJ
Pronunciation
- /koʊˈjuːnɪtɛri/
Etymology
From co- + unitary.
Meanings
-
(not-comparable) Having a counit, which is a map that serves as an identity-like element in a coalgebra, analogous to the unit in an algebra.
For instance the counitary property immediately implies that ρ is a monomorphism.
2002, William Chin, “A BRIEF INTRODUCTION TO COALGEBRA REPRESENTATION THEORY”, in William Chin, page 6:… the fᵢ - 0 for i = 1,2,3, and the eᵢ are cononical isomorphisms; and f₄ = 0 as P - P²Λ is a right (counitary) Λ-comodule.
1968, David W. Jonah, Cohomology of Coalgebras (Memoirs of the American Mathematical Society; 82), American Mathematical Soc., page 64:(counitary) (#92;varepsilon#92;otimesId#95;M)#92;circ#92;psi#61;Id#95;M
2024 May 27, Wikipedia contributors, “Comodule over a Hopf algebroid”, in English Wikipedia, Wikimedia Foundation: