On the structure and classification of SOMAs: Generalizations of mutually orthogonal Latin squares.
On the structure of a triangle-free infinite-chromatic graph of Gyarfas.
On the Structure of Affine Designs.
On the Structure of Finite Collineation Groups Containing Symmetries of Generalized Quadrangles.
On the structure of -connected graphs.
On the structure of multipliers of .
On the structure of path-like trees
We study the structure of path-like trees. In order to do this, we introduce a set of trees that we call expandable trees. In this paper we also generalize the concept of path-like trees and we call such generalization generalized path-like trees. As in the case of path-like trees, generalized path-like trees, have very nice labeling properties.
On the structure of plane graphs of minimum face size 5
A subgraph of a plane graph is light if the sum of the degrees of the vertices of the subgraph in the graph is small. It is known that a plane graph of minimum face size 5 contains light paths and a light pentagon. In this paper we show that every plane graph of minimum face size 5 contains also a light star and we present a structural result concerning the existence of a pair of adjacent faces with degree-bounded vertices.
On the structure of sets with many k-term arithmetic progressions
On the structure of the point arboricity critical graphs
On the structure of the Steiner triple systems derived from the Steiner quadruple systems
On the subspace of .
On the sum of dilations of a set
We show that for any relatively prime integers 1 ≤ p < q and for any finite A ⊂ ℤ one has .
On the sum of powers of Laplacian eigenvalues of bipartite graphs
For a bipartite graph and a non-zero real , we give bounds for the sum of the th powers of the Laplacian eigenvalues of using the sum of the squares of degrees, from which lower and upper bounds for the incidence energy, and lower bounds for the Kirchhoff index and the Laplacian Estrada index are deduced.
On the Symbolic Evaluation of Determinants
On the symmetries of the -Bernoulli polynomials.
On the symmetry classes of the first covariant derivatives of tensor fields.
On the symmetry of the distribution of -crossings and -nestings in graphs.
On the system of all maximal chains (antichains) of a graph.
On the -core of an -core partition.