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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Differential calculus and integration of generalized functions over membranes

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Author(s):
Aragona, Jorge [1] ; Fernandez, Roseli [1] ; Juriaans, Stanley O. [1] ; Oberguggenberger, Michael [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Matemat & Estat, BR-05314970 Sao Paulo - Brazil
[2] Univ Innsbruck, Arbeitsbereich Tech Math, A-6020 Innsbruck - Austria
Total Affiliations: 2
Document type: Journal article
Source: MONATSHEFTE FUR MATHEMATIK; v. 166, n. 1, p. 1-18, APR 2012.
Web of Science Citations: 6
Abstract

In this paper we continue the development of the differential calculus started in Aragona et al. (Monatsh. Math. 144: 13-29, 2005). Guided by the so-called sharp topology and the interpretation of Colombeau generalized functions as point functions on generalized point sets, we introduce the notion of membranes and extend the definition of integrals, given in Aragona et al. (Monatsh. Math. 144: 13-29, 2005), to integrals defined on membranes. We use this to prove a generalized version of the Cauchy formula and to obtain the Goursat Theorem for generalized holomorphic functions. A number of results from classical differential and integral calculus, like the inverse and implicit function theorems and Green's theorem, are transferred to the generalized setting. Further, we indicate that solution formulas for transport and wave equations with generalized initial data can be obtained as well. (AU)