Mathematics – Rings and Algebras
Scientific paper
2011-04-04
Mathematics
Rings and Algebras
11 pages
Scientific paper
The authors' previous results on the arity gap of functions of several variables are refined by considering polynomial functions over arbitrary fields. We explicitly describe the polynomial functions with arity gap at least 3, as well as the polynomial functions with arity gap equal to 2 for fields of characteristic 0 and finite fields of characteristic 2. These descriptions are given in the form of decomposition schemes of polynomial functions.
Couceiro Miguel
Lehtonen Erkko
Waldhauser Tamás
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