Abstract
In this paper, we consider a finite-dimensional vector space P over the Galois field GF(p), with p being an odd prime, and the family Bxk of all k-sets of elements of P summing up to a given element x. The main result of the paper is the characterization, for x=0, of the permutations of P inducing permutations of B0k as the invertible linear mappings of the vector space P if p does not divide k, and as the invertible affinities of the affine space P if p divides k. The same question is answered also in the case where the elements of the k-sets are required to be all nonzero, and, in fact, the two cases prove to be intrinsically inseparable.
Lingua originale | English |
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Numero di pagine | 11 |
Rivista | Forum Mathematicum |
Stato di pubblicazione | Published - 2020 |
All Science Journal Classification (ASJC) codes
- Mathematics(all)
- Applied Mathematics