9 search results - page 1 / 2 » Simplicity of the automorphism groups of some Hrushovski con... |
EJC
2010
13 years 4 months ago
2010
Two different constructions are given of a rank 8 arc-transitive graph with 165 vertices and valency 8, whose automorphism group
JSYML
2000
13 years 4 months ago
2000
The notion of a D-ring, generalizing that of a differential or a difference ring, is introduced. Quantifier elimination and a version of the AxKochen-Ershov principle is proven for...
COMBINATORICS
2000
13 years 4 months ago
2000
Two tournaments T1 and T2 on the same vertex set X are said to be switching equivalent if X has a subset Y such that T2 arises from T1 by switching all arcs between Y and its comp...
TIT
1998
13 years 4 months ago
1998
—A length n group code over a group G is a subgroup of Gn under component-wise group operation. Group codes over dihedral groups DM, with 2M elements, that are two-level construc...
COMBINATORICS
2006
13 years 4 months ago
2006
The group PGL(2, q), q = pn, p an odd prime, is 3-transitive on the projective line and therefore it can be used to construct 3-designs. In this paper, we determine the sizes of o...