Proofs by counting

Cubes of symmetric designs

Young's lattice

The permanent

Proofs of Cayley's formula

Quasi-symmetric 2-(28,12,11) designs with an automorphism of order 5

Combinatorics in the school curriculum

Recursion in teaching of computer science

Incidence algebras

Schematic 4-designs

Three-dimensional Hadamard matrices of Paley type

Association schemes

Equiangular lines

Non-embeddable quasi-residual quasi-symmetric designs

Strongly regular configurations

Distance regular graphs

Spherical geometry

Mathematical paradoxes

Quadrilaterals in the hyperbolic plane

Strongly regular configurations

A new partial geometry pg(5,5,2)

Quasi-symmetric designs on 56 points

Area and volume in the new curriculum of Matematics

Matrix products of binomial coefficients and unsigned Stirling numbers

The probabilistic method in combinatorics

Partial geometries

The Johnson scheme

Constructing partial geometries with prescribed automorphism groups

The Pfaffian and perfect matchings

Network coding

Generalized polygons

Gray codes

Spectral graph theory

Generating orbits for quasi-symmetric designs

More quasi-symmetric 2-(56,16,6) designs

Constructing quasi-symmetric designs from orbits

Cliquer

Erdös-Ko-Rado theorem

Strongly regular graphs

SRG configurations

Pythagorean triples and some similar Diophantine equations

Geometric $v_k$ configurations

Euclidean, hyperbolic and spherical trigonometry

Spherical and hyperbolic trigonometry

An updated and extended table of exceptional quasi-symmetric designs

Some new quasi-symmetric designs on 56 points

Some new designs with prescribed automorphism groups

Quasi-symmetric designs

Optimization on matroids

An updated table of quasi-symmetric designs

Finite fields

New Small 4-Designs with Nonabelian Automorphism Groups

Finite Minkowski planes

New quasi-symmetric designs and unitals with prescribed automorphism groups

New quasi-symmetric designs by the Kramer-Mesner method

New quasi-symmetric designs by the Kramer-Mesner method

On cyclic unitals

The Kramer-Mesner method for quasi-symmetric designs

Conformal models of the hyperbolic plane

Laguerre geometry

q-analogues of combinatorial numbers and identities

Blocking sets of the classical unital

Tiling Groups with Difference Sets

Cryptomorphisms of matroids

Resolvable designs

The fundamental theorem of algebra

Equations for coefficients of tactical decomposition matrices for t-designs

Inequalities for parameters of codes

Finite lattices

The programming language Python and its application in teaching

Kramer-Mesner method enhancements for constructions of finite incidence structures

Perfect graphs

Standard deviation as assessment of diabetes regulation

Hadamard codes

Arrow's theorem

Napoleon's quasigroups

The Kramer–Mesner method with tactical decompositions: some new unitals on 65 points

Pedal sets of unitals in projective planes of order 9 and 16

Election paradoxes

The Schreier-Sims algorithm

Quadratic sets in projective spaces

Partially ordered sets

Algorithms for the travelling salesman problem

The shortest path problem

The programming language Scratch and its application in teaching

MDS codes

Tilings of groups with difference sets

Orthogonal arrays and their application in statistics

The intersection problem for Steiner triple systems

The linear algebraic method

Generalizations of the Golden ratio

Generating random Latin squares

The metallic means

Delaunay triangulation and algorithms

The matrix tree theorem

The maximum network flow problem

Generating functions in combinatorics

Approximation algorithms for the Bin-packing problem

Helly's theorem and its generalizations

Semiaffine linear spaces

Latin squares

On unitals (65, 5, 1)

Lotto sets

The maximum clique problem and Keller's conjecture

LiveGraphics3D

Frequency squares of orders 7 and 8

Two games and their generalization

Stinson's algorithm for the construction of Steiner triple systems

A note on medial quasigroups

Some new Steiner 2-designs S(2, 4, 37)

A new generalization of the golden ratio

Finite linear spaces consisting of two symmetric configurations

A class of quasigroups associated with a cubic Pisot number

Construction and classification of finite structures by computer

Orbit matrices for TSC spaces

Finite linear spaces consisting of two symmetric configurations

Linear spaces consisting of two symmetric configurations

Game theory - mathematical modelling of conflict situations

On the size of the Moon

Steiner 2-designs S(2, 4, 28) with Nontrivial Automorphisms

Steiner 2-designs S(2, 5, 41) with automorphisms of order 3

A new Steiner S(2,5,41) design

Steiner 2-designs S(k,2k^2-2k+1)