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Now showing items 241-248 of 248

#### An exploratory survey of reference source instruction in LIS courses

(Reference & User Services Quarterly, 2006)

We surveyed 40 reference instructors at 28 North American ALA-accredited programs of library and information studies about instructional methods they used in teaching about reference sources in print and electronic formats. ...

#### Education for library service to youth in five countries

(Review of Children's Literature and Librarianship, 2006)

Youth services instructors from five countries (Australia, Canada, New Zealand, the United Kingdom, and the United States) were surveyed as to the content of youth-oriented courses they had taught between 2000 and 2003. A ...

#### Non-residues and primitive roots in Beatty sequences

(Australian Mathematical Society, 2006)

We study multiplicative character sums taken on the values of a non-homogeneous Beatty sequence Bα,β = {⌊αn + β⌋ : n = 1,2,3,…}, where α,β ∈ R, and α is irrational. In particular, our bounds imply that for every fixed ε > ...

#### Coincidences in the values of the Euler and Carmichael functions

(Polish Academy of Sciences, Institute of Mathematics, 2006)

The Euler function has long been regarded as one of the most basic of the arithmetic functions. More recently, partly driven by the rise in importance of computational number theory, the Carmichael function has drawn an ...

#### Arithmetic properties of φ(n)/λ(n) and the structure of the multiplicative group modulo n

(European Mathematical Society, 2006)

For a positive integer n, we let φ(n) and λ(n) denote the Euler function and the Carmichael function, respectively. We define ξ(n) as the ratio φ(n)/λ(n) and study various arithmetic properties of ξ(n).

#### On integers with a special divisibility property

(Masarykova Universita, 2006)

In this note, we study those positive integers n which are divisible by the Carmichael function.

#### Incomplete exponential sums and Diffie-Hellman triples

(Cambridge University Press, 2006)

Let p be a prime and 79 an integer of order t in the multiplicative group modulo p. In this paper, we continue the study of the distribution of Diffie-Hellman triples (V-x, V-y, V-xy) by considering the closely related ...