Currently displaying 1 – 20 of 34

Showing per page

Order by Relevance | Title | Year of publication

An elliptic curve having large integral points

Yanfeng HeWenpeng Zhang — 2010

Czechoslovak Mathematical Journal

The main purpose of this paper is to prove that the elliptic curve E : y 2 = x 3 + 27 x - 62 has only the integral points ( x , y ) = ( 2 , 0 ) and ( 28844402 , ± 154914585540 ) , using elementary number theory methods and some known results on quadratic and quartic Diophantine equations.

On the mean value of Dedekind sum weighted by the quadratic Gauss sum

Tingting WangWenpeng Zhang — 2013

Czechoslovak Mathematical Journal

Various properties of classical Dedekind sums S ( h , q ) have been investigated by many authors. For example, Wenpeng Zhang, On the mean values of Dedekind sums, J. Théor. Nombres Bordx, 8 (1996), 429–442, studied the asymptotic behavior of the mean value of Dedekind sums, and H. Rademacher and E. Grosswald, Dedekind Sums, The Carus Mathematical Monographs No. 16, The Mathematical Association of America, Washington, D.C., 1972, studied the related properties. In this paper, we use the algebraic method to...

Some new sums related to D. H. Lehmer problem

Han ZhangWenpeng Zhang — 2015

Czechoslovak Mathematical Journal

About Lehmer’s number, many people have studied its various properties, and obtained a series of interesting results. In this paper, we consider a generalized Lehmer problem: Let p be a prime, and let N ( k ; p ) denote the number of all 1 a i p - 1 such that a 1 a 2 a k 1 mod p and 2 a i + a ¯ i + 1 , i = 1 , 2 , , k . The main purpose of this paper is using the analytic method, the estimate for character sums and trigonometric sums to study the asymptotic properties of the counting function N ( k ; p ) , and give an interesting asymptotic formula for it.

Two identities related to Dirichlet character of polynomials

Weili YaoWenpeng Zhang — 2013

Czechoslovak Mathematical Journal

Let q be a positive integer, χ denote any Dirichlet character mod q . For any integer m with ( m , q ) = 1 , we define a sum C ( χ , k , m ; q ) analogous to high-dimensional Kloosterman sums as follows: C ( χ , k , m ; q ) = a 1 = 1 q ' a 2 = 1 q ' a k = 1 q ' χ ( a 1 + a 2 + + a k + m a 1 a 2 a k ¯ ) , where a · a ¯ 1 mod q . The main purpose of this paper is to use elementary methods and properties of Gauss sums to study the computational problem of the absolute value | C ( χ , k , m ; q ) | , and give two interesting identities for it.

Page 1 Next

Download Results (CSV)