Stela
Dimitrova Zhelezova
Institute of Mathematics and
Informatics, Bulgarian Academy of Sciences
Research
Interests:
construction
and study of combinatorial resolvable designs, orthogonal resolutions, spreads
and parallelisms of projective spaces, cryptographic properties of boolean functions and S-boxes
Address:
Institute of
Mathematics and Informatics
P.O.Box 323
5000 V.Tarnovo
Bulgaria
e-mail : stela@math.bas.bg
(v,c
x u,lambda)-splitting BIBDs
KTS(45) with
automorphisms of order 15
Some
properties of cyclic STS(45)
Cyclically
Resolvable 2-(64, 4, 1) designs
Cyclic parallelisms of PG(5,2)
2-parallelisms of PG(5,2)
with automorphisms of order 31
Transitive 2-parallelisms of PG(5,2)
Regular parallelisms of PG(3,4) with deficiency m=5
Parallelisms of PG(3,4) with
automorphisms of order 3
Parallelisms of PG(3,4) with cyclic automorphism group of order 4
All Parallelisms of PG(3,4) with full
automorphism group of order 4
Parallelisms of PG(3,4)
with full automorphism group of order 4m, m > 1
Parallelisms of PG(3,4) with
automorphisms of order 5
Parallelisms of PG(3,4) with automorphisms of order 7
Parallelisms of PG(3,5) with
automorphism of order 13
Parallelisms of PG(3,5) with cyclic automorphism group of order 8 and
specific structure
Parallelisms of PG(3,5) with an automorphism
group of order 25
Transitive
deficiency one parallelisms of PG(3,7)