HOPF QUIVERS
Claude CIBILS
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DVI
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| We classify graded Hopf algebras
structures over path coalgebras, that is over free pointed coalgebras,
using Hopf quivers which are analogous to Cayley graphs.
The description involves formulas for the product besides the canonical formulas for the coproduct.This makes explicit the quantum shuffle product making use of natural elements in a Hopf bimodule having a simple "geometrical" interpretation in the quiver sense, rather than working systematically with right or left coinvariants. |
C.C.
Dép. de Mathématiques, Université de Montpellier 2. |
| M.R.
Dép. de mathématiques et applications, École normale supérieure. |
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