Svetlana Todorova Topalova
associate professor
Institute of Mathematics and Informatics, Bulgarian Academy of Sciences.
Research Interests: construction and study of combinatorial designs and error-correcting codes, resolvable designs, orthogonal resolutions, spreads and packings of projective spaces, automorphism groups of designs and codes
Where I work - the institute, the town of Veliko Tarnovo, the colleagues
Address
Svetlana Topalova
Institute of Mathematics and Informatics
P.O.Box 323
5000 V.Tarnovo
Bulgaria
e-mail svetlana@moi.math.bas.bg
Hadamard matrices of order 44 with automorphisms of order 7
Hadamard 2-(63,31,15) designs invariant under the dihedral group of order 10