On the construction of functional equations with prescribed general solution

Verfasser / Beitragende:
[Jens Schwaiger]
Ort, Verlag, Jahr:
2015
Enthalten in:
Aequationes mathematicae, 89/1(2015-02-01), 23-40
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00010-014-0314-2  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00010-014-0314-2 
100 1 |a Schwaiger  |D Jens  |u Institut für Mathematik und Wiss. Rechnen, Karl-Franzens-Universität Graz, Heinrichstraße 36, 8010, Graz, Austria  |4 aut 
245 1 0 |a On the construction of functional equations with prescribed general solution  |h [Elektronische Daten]  |c [Jens Schwaiger] 
520 3 |a Given rational vector spaces V, W a mapping $${f \colon V \to W}$$ f : V → W is called a generalized polynomial of degree at most n, if there are homogeneous generalized polynomials f i of degree i such that $${f = \sum_{i = 0}^n f_i}$$ f = ∑ i = 0 n f i . Homogeneous generalized polynomials f i of degree i are mappings of the form $${f_i (x) = f_i^*(x, x, \ldots , x)}$$ f i ( x ) = f i ∗ ( x , x , ... , x ) with $${f_i^* \colon V^i \to W i}$$ f i ∗ : V i → W i -linear. In the literature one may find quite a lot of functional equations such that their general solution is of the form f n or $${f_n + f_{n - 1}}$$ f n + f n - 1 where n is a small positive integer (≤ 6 or ≤ 4 respectively). In this paper, given an arbitrary positive integer n and an arbitrary subset $${L \subseteq \{0, 1, \ldots, n\}}$$ L ⊆ { 0 , 1 , ... , n } such that $${n \in L}$$ n ∈ L , a method is described to find (many) functional equations, such that their general solution is given by $${\sum_{i \in L} f_i}$$ ∑ i ∈ L f i . For the cases $${L = \{n\}}$$ L = { n } and $${L = \{n - 1, n\}}$$ L = { n - 1 , n } additional equations are given. 
540 |a Springer Basel, 2014 
690 7 |a Functional equations with prescribed general solution  |2 nationallicence 
690 7 |a generalized polynomials  |2 nationallicence 
773 0 |t Aequationes mathematicae  |d Springer Basel  |g 89/1(2015-02-01), 23-40  |x 0001-9054  |q 89:1<23  |1 2015  |2 89  |o 10 
856 4 0 |u https://doi.org/10.1007/s00010-014-0314-2  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00010-014-0314-2  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 100  |E 1-  |a Schwaiger  |D Jens  |u Institut für Mathematik und Wiss. Rechnen, Karl-Franzens-Universität Graz, Heinrichstraße 36, 8010, Graz, Austria  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Aequationes mathematicae  |d Springer Basel  |g 89/1(2015-02-01), 23-40  |x 0001-9054  |q 89:1<23  |1 2015  |2 89  |o 10