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Foncteurs polynomiaux et foncteurs de Mackey non linéaires

Hans-Joachim Baues, Winfried Dreckmann, Vincent Franjou, Teimuraz Pirashvili (2001)

Bulletin de la Société Mathématique de France

On décrit les foncteurs polynomiaux, des groupes abéliens libres vers les groupes abéliens, comme des diagrammes de groupes abéliens dont on explicite les relations.

Free A -categories.

Lyubashenko, Volodymyr, Manzyuk, Oleksandr (2006)

Theory and Applications of Categories [electronic only]

From left modules to algebras over an operad: application to combinatorial Hopf algebras

Muriel Livernet (2010)

Annales mathématiques Blaise Pascal

The purpose of this paper is two fold: we study the behaviour of the forgetful functor from 𝕊 -modules to graded vector spaces in the context of algebras over an operad and derive the construction of combinatorial Hopf algebras. As a byproduct we obtain freeness and cofreeness results for those Hopf algebras.Let 𝒪 denote the forgetful functor from 𝕊 -modules to graded vector spaces. Left modules over an operad 𝒫 are treated as 𝒫 -algebras in the category of 𝕊 -modules. We generalize the results obtained...

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