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Distance-preserving subgraphs of hypercubes

- D. Djoković
- Mathematics
- 1 June 1973

Abstract We give a characterization of connected subgraphs G of hypercubes H such that the distance in G between any two vertices a, b ϵ G is the same as their distance in H. The hypercubes are… Expand

Classification of trivectors of an eight-dimensional real vector space

- D. Djoković
- Mathematics
- 1 March 1983

(1983). Classification of trivectors of an eight-dimensional real vector space. Linear and Multilinear Algebra: Vol. 13, No. 1, pp. 3-39.

Automorphisms of graphs and coverings

- D. Djoković
- Mathematics
- 1 June 1974

Abstract We apply the theory of covering spaces to show how one can construct infinitely many finite s -transitive or locally s -transitive graphs. N. Biggs has used for similar purpose a special… Expand

Closures of conjugacy classes in classical real linear Lie groups

- D. Djoković
- Mathematics
- 1 March 1982

By a classical group we mean one of the groups GLJ(R), GLn(C), GL,(H), U(p, q), OQ(C), O(p, q), SO*(2n), Sp21(C), Sp2n(R), or Sp(p, q). Let G be a classical group and L its Lie algebra. For each x E… Expand

Hermitian matrices over polynomial rings

- D. Djoković
- Mathematics
- 1 December 1976

Abstract Let R be a twisted polynomial ring F[X; S, D] where F is a division ring, S is an automorphism of F and D is an S-derivation of F. Thus Xα = αSX + αD holds for every α ϵ F. Let ∗ be an… Expand

Distillability and PPT entanglement of low-rank quantum states

- Lin Chen, D. Djoković
- Mathematics, Physics
- 26 January 2011

It is known that he bipartite quantum states, with rank strictly smaller than the maximum of the ranks of its two reduced states, are distillable by local operations and classical communication. Our… Expand

Qubit-qudit states with positive partial transpose

- Lin Chen, D. Djoković
- Physics, Mathematics
- 29 September 2012

We show that the length of a qubit-qutrit separable state is equal to the max(r,s), where r is the rank of the state and s is the rank of its partial transpose. We refer to the ordered pair (r,s) as… Expand

Normal forms of elements of classical real and complex Lie and Jordan algebras

- D. Djoković, J. Patera, P. Winternitz, H. Zassenhaus
- Mathematics
- 1 June 1983

Elements of the classical complex and real Lie and Jordan algebras with involutions are classified into conjugacy classes under the action of the corresponding classical Lie group. Normal forms of… Expand

Normal Forms and Tensor Ranks of Pure States of Four Qubits

- Oleg Chterental, D. Djoković
- Physics, Mathematics
- 21 December 2006

We examine the SLOCC classification of the (non-normalized) pure states of four qubits obtained by F. Verstraete et al. The rigorous proofs of their basic results are provided and necessary… Expand

Extensions of certain homomorphisms of subsemigroups to homomorphisms of groups

- J. Aczél, J. Baker, D. Djoković, P. Kannappan, F. Radó
- Mathematics
- 1 February 1971

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