K. Leung

发表

New restrictions on possible orders of circulant Hadamard matrices

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2012, Des. Codes Cryptogr..

Proper partial geometries with Singer groups and pseudogeometric partial difference sets

Siu Lun Ma, Bernhard Schmidt, Ka Hin Leung, 2008, J. Comb. Theory, Ser. A.

On commutative Noetherian rings which satisfy the radical formula

K. Leung, S. H. Man, 1997, Glasgow Mathematical Journal.

Invariant and semi-invariant polynomials in skew polynomial rings

T. Lam, A. Leroy, J. Matczuk, 1989 .

Forms and Baer ordered *-fields

K. Leung, 2000 .

On Vanishing Sums of Roots of Unity

T. Lam, K. H. Leung, K. Leung, 1995, math/9511209.

On the nonexistence of semi-regular relative difference sets

Bernhard Schmidt, Tao Zhang, K. Leung, 2023, J. Comb. Theory, Ser. A.

A Trace Conjecture and Flag-Transitive Affine Planes

R. D. Baker, Gary L. Ebert, Qing Xiang, 2001, J. Comb. Theory, Ser. A.

On schur rings over cyclic groups

Ka Hin Leung, Shing Hing Man, K. Leung, 1998 .

On Schur Rings over Cyclic Groups, II

Ka Hin Leung, Shing Hing Man, K. Leung, 1996 .

Partial Difference Sets with Paley Parameters

Siu Lun Ma, S. L. Ma, K. H. Leung, 1995 .

Constructions of Partial Difference Sets and Relative Difference Sets on p-Groups

Siu Lun Ma, S. L. Ma, K. H. Leung, 1990 .

New Partial Difference Sets in Ztp2 and a Related Problem about Galois Rings

K. H. Leung, Xiang-dong Hou, Qing Xiang, 2001 .

Finite quotients of the automorphism group of a free group

Ka Hin Leung, Mong Lung Lang, Yan Loi Wong, 1995 .

Positive semidefinite forms over ordered skew fields

K. Leung, 1989 .

On Mathon's construction of maximal arcs in Desarguesian planes II

F. Fiedler, K. H. Leung, Qing Xiang, 2004, J. Comb. Theory, Ser. A.

Constructions of Relative Difference Sets with Classical Parameters and Circulant Weighing Matrices

Siu Lun Ma, Bernhard Schmidt, Ka Hin Leung, 2002, J. Comb. Theory, Ser. A.

On vanishing sums of $\,m\,$th roots of unity in finite fields

T. Lam, K. H. Leung, K. Leung, 1996, math/9605216.

Upper Bounds for Cyclotomic Numbers

Bernhard Schmidt, T. D. Duc, K. Leung, 2019, 1903.07314.

New constructions of Hadamard matrices

Koji Momihara, Ka Hin Leung, K. Momihara, 2018, J. Comb. Theory, Ser. A.

On the Cyclotomic Polynomial Φpq (X)

T. Y. Lam, T. Lam, K. H. Leung, 1996 .

The Real Spectrum of a Noncommutative Ring

M. Marshall, Yufei Zhang, K. Leung, 1997 .

Determination of all possible orders of weight 16 circulant weighing matrices

Ali Nabavi, K. T. Arasu, Siu Lun Ma, 2006, Finite Fields Their Appl..

Binary cyclic codes with two primitive nonzeros

Tao Feng, K. Leung, Qing Xiang, 2013, Science China Mathematics.

Binary cyclic codes with two primitive nonzeros

Tao Feng, Qing Xiang, Ka Hin Leung, 2013, ArXiv.

Nonexistence of Abelian difference sets: Lander's conjecture for prime power orders

Siu Lun Ma, Bernhard Schmidt, S. L. Ma, 2003 .

Unique sums and differences in finite Abelian groups

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2021, Journal of Number Theory.

The anti-field-descent method

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2016, J. Comb. Theory, Ser. A.

The Field Descent Method

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2005, Des. Codes Cryptogr..

Nonexistence results on generalized bent functions Zqm→Zq with odd m and q ≡ 2 ( mod 4)

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2019, J. Comb. Theory, Ser. A.

Structure of group invariant weighing matrices of small weight

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2018, J. Comb. Theory, Ser. A.

A multiplier theorem

Siu Lun Ma, Bernhard Schmidt, Ka Hin Leung, 2014, J. Comb. Theory, Ser. A.

Hadamard difference sets related to Lander's conjecture

Bernhard Schmidt, K. H. Leung, Tao Feng, 2014 .

Finiteness of circulant weighing matrices of fixed weight

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2011, J. Comb. Theory, Ser. A.

On Lander’s conjecture for difference sets whose order is a power of 2 or 3

Siu Lun Ma, Bernhard Schmidt, Ka Hin Leung, 2010, Des. Codes Cryptogr..

Asymptotic Nonexistence of Difference Sets in Dihedral Groups

Bernhard Schmidt, Ka Hin Leung, Bernhard Schmidt, 2002, J. Comb. Theory, Ser. A.

Partial Difference Triples

Siu Lun Ma, S. L. Ma, K. H. Leung, 1993 .

Difference sets in dihedral groups

Siu Lun Ma, Ka Hin Leung, Yan Loi Wong, 1991, Des. Codes Cryptogr..

Abelian Divisible Difference Sets with Multiplier - 1

Siu Lun Ma, Ka Hin Leung, Victor Tan, 1992, J. Comb. Theory, Ser. A.

Constructions of Semi-regular Relative Difference Sets

Siu Lun Ma, S. L. Ma, K. H. Leung, 2001 .

A Construction of Partial Difference Sets in $${\mathbb{Z}}_{p^{2 \times } } {\mathbb{Z}}_{p^{2 \times \cdot \cdot \cdot \times } } {\mathbb{Z}}_{p^2 } $$

Siu Lun Ma, K. H. Leung, K. Leung, 1996 .

A Construction of Partial Difference Sets in \Z_{p^{2}}\times\Z_{p^{2}}\times\cdots\times\Z_{p^{2}}

Siu Lun Ma, K. Leung, 1996 .

On the groups of units of finite commutative chain rings

Xiang-dong Hou, Siu Lun Ma, Ka Hin Leung, 2003 .

A Construction of Partial Difference Sets in {\mathbb{Z}_{{{p^2}}}} \times {\mathbb{Z}_{{{p^2}}}} \times ... \times {\mathbb{Z}_{{{p^2}}}}

Siu Lun Ma, K. Leung, 1996 .

No lattice tiling of Zn by Lee sphere of radius 2

Yue Zhou, Ka Hin Leung, Yue Zhou, 2020, J. Comb. Theory, Ser. A.

There is no lattice tiling of $\mathbb{Z}^n$ by Lee spheres of radius $2$ for $n\geq 3$

Ka Hin Leung, Yue Zhou, Yue Zhou, 2018, 1808.08520.

New binary linear codes from algebraic curves

Chaoping Xing, San Ling, Ka Hin Leung, 2002, IEEE Trans. Inf. Theory.

Planar Functions from Zn to Zn

Siu Lun Ma, Ka Hin Leung, Victor Tan, 2000 .

New restrictions on possible orders of circulant Hadamard matrices

Bernhard Schmidt, K. Leung, 2011, Designs, Codes and Cryptography.

New Hadamard matrices of order 4p2 obtained from Jacobi sums of order 16

Siu Lun Ma, Bernhard Schmidt, Ka Hin Leung, 2006, J. Comb. Theory, Ser. A.

On a generalization of Albert’s theorem

K. Leung, 1990 .