2 citations · 3 across the 10 of their papers we have counts for
4 papers · 1 filter
On a class of combinatorial group invariants
Arthur Fernandes, Claudio Qureshi, Lucas Reis +1
In this paper, we explore group invariants arising from combinatorial structures associated with finite groups, including the functional graphs of power maps and the well-studied p…
On the non-existence of perfect codes in the Niederreiter-Rosenbloom-Tsfasman metric
Viviana Gubitosi, Aldo Portela, Claudio Qureshi
In this paper we consider codes in with packing radius regarding the NRT-metric (i.e. when the underlying poset is a disjoint union of chains with th…
Periods of iterations of functions with restricted preimage sizes
Rodrigo S. V. Martins, Daniel Panario, Claudio Qureshi +1
We consider random mappings on n = kr nodes with preimage sizes restricted to a set of the form {0,k}, where k = k(r) is greater than 1. We prove that T, the least common multiple…
On Cube Tilings of Tori and Classification of Perfect Codes in the Maximum Metric
Claudio Qureshi, Sueli I. R. Costa
We describe odd-length-cube tilings of the n-dimensional q-ary torus what includes q-periodic integer lattice tilings of R^n. In the language of coding theory these tilings corresp…