AbstractWe improve the constructions of S. Bagchi and B. Bagchi for Steiner 2-designs which are point-regular over the additive group of a Galois ring. As a consequence, we get new cyclotomic conditions leading to point-regular Steiner 2-designs with block sizek∈ {7, 9, 11, 13, 17}
A Steiner 2-design is said to be G-invariantly resolvable if admits an automorphism group G and a re...
AbstractBy a (v, k, λ)-difference family in an additive abelian group G of order v, we mean a family...
AbstractLet CS(2, k, υ) denote a cyclic Steiner 2-design of order υ with block size k. Our main resu...
We improve the constructions of S. Bagchi and B. Bagchi for Steiner 2-designs which are point-regula...
AbstractWe improve the constructions of S. Bagchi and B. Bagchi for Steiner 2-designs which are poin...
A design is additive under an abelian group $G$ (briefly, $G$-additive) if, up to isomorphism, its p...
AbstractA general construction for Steiner 2-designs with prime power block size (and with a point-r...
A general construction for Steiner 2-designs with prime power block size (and with a point-regular a...
In this article designs with parameters S(2,4,28) and nontrivial automorphism groups are classified....
In this article designs with parameters S(2,4,28) and nontrivial automorphism groups are classified....
AbstractWe consider a slight generalization of ordinary difference families that in the case λ = 1 c...
AbstractWe give a construction of a 2-(mn2+1,mn,(n+1)(mn−1)) design starting from a Steiner system S...
AbstractLet q be a prime power. For every ν satisfying necessary arithmetic conditions we construct ...
AbstractA CB(v,k,λ) means a cyclic 2-design of block size k coincidence number λ, and with v points....
We show that symmetric block designs D=(P, B) can be embedded in a suitable commutative group G_D in...
A Steiner 2-design is said to be G-invariantly resolvable if admits an automorphism group G and a re...
AbstractBy a (v, k, λ)-difference family in an additive abelian group G of order v, we mean a family...
AbstractLet CS(2, k, υ) denote a cyclic Steiner 2-design of order υ with block size k. Our main resu...
We improve the constructions of S. Bagchi and B. Bagchi for Steiner 2-designs which are point-regula...
AbstractWe improve the constructions of S. Bagchi and B. Bagchi for Steiner 2-designs which are poin...
A design is additive under an abelian group $G$ (briefly, $G$-additive) if, up to isomorphism, its p...
AbstractA general construction for Steiner 2-designs with prime power block size (and with a point-r...
A general construction for Steiner 2-designs with prime power block size (and with a point-regular a...
In this article designs with parameters S(2,4,28) and nontrivial automorphism groups are classified....
In this article designs with parameters S(2,4,28) and nontrivial automorphism groups are classified....
AbstractWe consider a slight generalization of ordinary difference families that in the case λ = 1 c...
AbstractWe give a construction of a 2-(mn2+1,mn,(n+1)(mn−1)) design starting from a Steiner system S...
AbstractLet q be a prime power. For every ν satisfying necessary arithmetic conditions we construct ...
AbstractA CB(v,k,λ) means a cyclic 2-design of block size k coincidence number λ, and with v points....
We show that symmetric block designs D=(P, B) can be embedded in a suitable commutative group G_D in...
A Steiner 2-design is said to be G-invariantly resolvable if admits an automorphism group G and a re...
AbstractBy a (v, k, λ)-difference family in an additive abelian group G of order v, we mean a family...
AbstractLet CS(2, k, υ) denote a cyclic Steiner 2-design of order υ with block size k. Our main resu...
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