منابع مشابه
Incidence Hopf algebras
1 The classical Möbius function 1.1 Arithmetic functions and Dirichlet series. Write N (meant to encode some arithmetic feature of each number n). To each arithmetic function f one associates a Dirichlet series F (s) = n≥1 f (n) n s thought of as a function defined on some open set of the complex plane. Analytic number theory is to a large extent the study of arithmetic functions in terms of th...
متن کاملHopf algebra structure of incidence algebras
The incidence algebra of a partially ordered set (poset) supports in a natural way also a coalgebra structure, so that it becomes a m-weak bialgebra even a m-weak Hopf algebra with Möbius function as antipode. Here mweak means that multiplication and comultiplication are not required to be coalgebraor algebra-morphisms, respectively. A rich theory is obtained in computing modulo an equivalence ...
متن کاملGalois Connections for Incidence Hopf Algebras of Partially Ordered Sets
An important well-known result of Rota describes the relationship between the Möbius functions of two posets related by a Galois connection. We present an analogous result relating the antipodes of the corresponding incidence Hopf algebras, from which the classical formula can be deduced. To motivate the derivation of this more general result, we first observe that a simple conceptual proof of ...
متن کاملBaxter Algebras and Hopf Algebras
George E. Andrews Department of Mathematics Pennsylvania State University University Park, PA 16802, USA ([email protected]) Li Guo Department of Mathematics and Computer Science Rutgers University at Newark Newark, NJ 07102, USA ([email protected]) William Keigher Department of Mathematics and Computer Science Rutgers University at Newark Newark, NJ 07102, USA ([email protected]...
متن کاملBraided Hopf Algebras Obtained from Coquasitriangular Hopf Algebras
Let (H, σ) be a coquasitriangular Hopf algebra, not necessarily finite dimensional. Following methods of Doi and Takeuchi, which parallel the constructions of Radford in the case of finite dimensional quasitriangular Hopf algebras, we define Hσ , a sub-Hopf algebra of H, the finite dual of H. Using the generalized quantum double construction and the theory of Hopf algebras with a projection, we...
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ژورنال
عنوان ژورنال: Journal of Pure and Applied Algebra
سال: 1994
ISSN: 0022-4049
DOI: 10.1016/0022-4049(94)90105-8