We show that the Hopf algebra dual of the polynomials in one variable appears often in analysis, but under different disguises that include proper rational functions, exponential polynomials, shift invariant operators, Taylor functionals, and linearly recurrent sequences. The isomorphisms from the p
Real and discrete holomorphy: Introduction to an algebraic approach
✍ Scribed by Sylvain Barré; Abdelghani Zeghib
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 399 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0021-7824
No coin nor oath required. For personal study only.
✦ Synopsis
We consider spaces for which there is a notion of harmonicity for complex valued functions defined on them. For instance, this is the case of Riemannian manifolds on one hand, and (metric) graphs on the other hand. We observe that it is then possible to define an "amusing" notion of holomorphic functions on them, and show how rigid it is in some cases.
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