Solar evolution implies, for contemporary albedos and atmospheric composition, global mean temperatures below the freezing point of seawater less than 2.3 aeons ago, contrary to geologic andâ€¦ (More)

Motivated by recent interest in permutation arrays, we introduce and investigate the more general concept of frequency permutation arrays (FPAs). An FPA of length n = mÎ» and distance d is a set T ofâ€¦ (More)

D. Wan very recently proved an asymptotic version of a conjecture of Hansen and Mullen concerning the distribution of irreducible polynomials over finite fields. In this note we prove that theâ€¦ (More)

We provide upper bounds for the cardinality of the value set of a polynomial map in several variables over a finite field. These bounds generalize earlier bounds for univariate polynomials.

Applicable Algebra in Engineering, Communicationâ€¦

1992

In this note we provide a number of polynomial formulas for the discrete logarithm problem in an arbitrary multiplicative subgroup of a finite field. These formulas generalize previous formulas forâ€¦ (More)

A covering array CA(N ; t, k, v) is an N Ã— k array such that every N Ã— t sub-array contains all t-tuples from v symbols at least once, where t is the strength of the array. Covering arrays are usedâ€¦ (More)

Reversed Dickson polynomials over finite fields are obtained from Dickson polynomials Dn(x, a) over finite fields by reversing the roles of the indeterminate x and the parameter a. We study reversedâ€¦ (More)