English

New maximum scattered linear sets of the projective line

Combinatorics 2017-09-05 v1

Abstract

In [2] and [19] are presented the first two families of maximum scattered Fq\mathbb{F}_q-linear sets of the projective line PG(1,qn)\mathrm{PG}(1,q^n). More recently in [23] and in [5], new examples of maximum scattered Fq\mathbb{F}_q-subspaces of V(2,qn)V(2,q^n) have been constructed, but the equivalence problem of the corresponding linear sets is left open. Here we show that the Fq\mathbb{F}_q-linear sets presented in [23] and in [5], for n=6,8n=6,8, are new. Also, for qq odd, q±1,0(mod5)q\equiv \pm 1,\,0 \pmod 5, we present new examples of maximum scattered Fq\mathbb{F}_q-linear sets in PG(1,q6)\mathrm{PG}(1,q^6), arising from trinomial polynomials, which define new Fq\mathbb{F}_q-linear MRD-codes of Fq6×6\mathbb{F}_q^{6\times 6} with dimension 1212, minimum distance 5 and middle nucleus (or left idealiser) isomorphic to Fq6\mathbb{F}_{q^6}.

Keywords

Cite

@article{arxiv.1709.00926,
  title  = {New maximum scattered linear sets of the projective line},
  author = {Bence Csajbók and Giuseppe Marino and Ferdinando Zullo},
  journal= {arXiv preprint arXiv:1709.00926},
  year   = {2017}
}