1 citations · 1 across the 5 of their papers we have counts for
5 papers
Orthogonal designs and symmetric Hadamard matrices
Dragomir Ž. Djoković
Our main result is the construction of symmetric Hadamard matrices of order q(1 + q) where q is a prime power congruent to 3 mod 8.
Two classes of Hadamard matrices of Goethals-Seidel type
Dragomir Ž. Đoković
We introduce two classes of Hadamard matrices of Goethals-Seidel type and construct many matrices in these classes.
Hadamard matrices: skew of orders 276, 292 and symmetric 372
Dragomir Ž. Djoković
The smallest integer v>0 for which no skew-Hadamard matrix of order 4v is known is v=69. We show how to construct several such matrices. We also construct presumably the first exam…
A few new orders for D-optimal matrices
Dragomir Ž. Djoković
The first examples of D-optimal matrices of orders 222, 234, 258 and 278 are constructed.
A heuristic algorithm for computing the Poincaré series of the invariants of binary forms
Dragomir Ž. Djoković
We propose a heuristic algorithm for fast computation of the Poincaré series of the invariants of binary forms of degree , viewed as rational functions. The algorithm i…