Geodesic
On zero-testing and interpolation of sums of characters
Séminaire lotharingien de combinatoire, Tome 21 (1989) Cet article a éte moissonné depuis la source Séminaire Lotharingien de Combinatoire website

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Motivated by an amazing result of D. Y. Grigoriev and M. Karpinski, the interpolation problem for k-sparse multivariate polynomials has received some attention in recent years. In this note we want to show that essentially all of the results obtained so far hold more generally for k-sparse sums of characters of abelian monoids, thereby providing a useful unified approach to this active field of research. As it turns out the basic ingredients of this approach are the construction of distinction sets for characters and zero-test sets for k-sparse character sums. 

@article{SLC_1989_21_a0,
     author = {Andreas Dress and Johannes Grabmeier},
     title = {On zero-testing and interpolation of sums of characters},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {1989},
     volume = {21},
     url = {http://geodesic.mathdoc.fr/item/SLC_1989_21_a0/}
}
TY  - JOUR
AU  - Andreas Dress
AU  - Johannes Grabmeier
TI  - On zero-testing and interpolation of sums of characters
JO  - Séminaire lotharingien de combinatoire
PY  - 1989
VL  - 21
UR  - http://geodesic.mathdoc.fr/item/SLC_1989_21_a0/
ID  - SLC_1989_21_a0
ER  - 
%0 Journal Article
%A Andreas Dress
%A Johannes Grabmeier
%T On zero-testing and interpolation of sums of characters
%J Séminaire lotharingien de combinatoire
%D 1989
%V 21
%U http://geodesic.mathdoc.fr/item/SLC_1989_21_a0/
%F SLC_1989_21_a0
Andreas Dress; Johannes Grabmeier. On zero-testing and interpolation of sums of characters. Séminaire lotharingien de combinatoire, Tome 21 (1989). http://geodesic.mathdoc.fr/item/SLC_1989_21_a0/