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1.
Semiregular automorphisms in vertex-transitive graphs with a solvable group of automorphisms
Dragan Marušič, 2017, izvirni znanstveni članek

Opis: It has been conjectured that automorphism groups of vertex-transitive (di)graphs, and more generally 2-closures of transitive permutation groups, must necessarily possess a fixed-point-free element of prime order, and thus a non-identity element with all orbits of the same length, in other words, a semiregular element. The known affirmative answers for graphs with primitive and quasiprimitive groups of automorphisms suggest that solvable groups need to be considered if one is to hope for a complete solution of this conjecture. It is the purpose of this paper to present an overview of known results and suggest possible further lines of research towards a complete solution of the problem.
Ključne besede: solvable group, semiregular automorphism, fixed-point-free automorphism, polycirculant conjecture
Objavljeno v RUP: 02.01.2022; Ogledov: 1106; Prenosov: 18
.pdf Celotno besedilo (235,26 KB)

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Bicirculants via imprimitivity block systems
Dragan Marušič, 2021, izvirni znanstveni članek

Ključne besede: semiregular group, imprimitive group, arc-transitive graph, bicirculant
Objavljeno v RUP: 06.05.2021; Ogledov: 1128; Prenosov: 31
URL Povezava na celotno besedilo

4.
Hamilton cycles in primitive vertex-transitive graphs of order a product of two primes - the case PSL(2, q[sup]2) acting on cosets of PGL(2, q)
Shao Fei Du, Klavdija Kutnar, Dragan Marušič, 2020, izvirni znanstveni članek

Opis: A step forward is made in a long standing Lovász problem regarding hamiltonicity of vertex-transitive graphs by showing that every connected vertex-transitive graph of order a product of two primes arising from the group action of the projective special linear group PSL▫$(2, q^2)$▫ on cosets of its subgroup isomorphic to the projective general linear group PGL$(2, q)$ contains a Hamilton cycle.
Ključne besede: vertex-transitive graph, Hamilton cycle, automorphism group, orbital graph
Objavljeno v RUP: 19.07.2020; Ogledov: 1717; Prenosov: 47
.pdf Celotno besedilo (365,31 KB)

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Polynomials of degree 4 over finite fields representing quadratic residues
Shao Fei Du, Klavdija Kutnar, Dragan Marušič, 2019, izvirni znanstveni članek

Ključne besede: finite field, polynomial, quadratic residues
Objavljeno v RUP: 10.02.2020; Ogledov: 2029; Prenosov: 75
.pdf Celotno besedilo (317,71 KB)

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Lovász Hamiltonicity Problem
Klavdija Kutnar, Shao Fei Du, Dragan Marušič, 2019, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)

Ključne besede: Lovász problem, Hamilton cycle, vertex-transitive graph
Objavljeno v RUP: 06.08.2019; Ogledov: 2058; Prenosov: 89
.pdf Celotno besedilo (19,29 KB)
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