Anka Golemac

  • Citations Per Year
Learn More
The correspondence between a (96, 20, 4) symmetric design having regular automorphism group and a difference set with the same parameters has been used to obtain difference sets in groups of order 96. Starting from eight such symmetric designs constructed by the tactical decomposition method, 55 inequivalent (96, 20, 4) difference sets are distinguished.(More)
All groups of type E25 · E4 are considered as possible automorphism groups of a (100; 45; 20) symmetric design. New designs are constructed, and those among them leading to Bush-type Hadamard matrices of order 100 are singled out. Further, the full automorphism groups of the constructed designs are given. c © 2002 Elsevier Science B.V. All rights reserved.
Using the list of 2607 so far constructed (96,20,4) difference sets as a source, we checked the related symmetric designs upon isomorphism and analyzed their full automorphism groups. New (96,20,4,4) and (96,19,2,4) regular partial difference sets are constructed, together with the corresponding strongly regular graphs.
The Traveling Salesman Problem (TSP) is one of the most famous and most studied problems of combinatorial optimization. Its mathematical model consists of finding a minimum-weight Hamiltonian cycle in a weighted graph. This paper gives an overview of the TSP problem and its complexity throughout its history, variants, solution methods, and applications.
  • 1