Combinatorics '04

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Vito Abatangelo, University of Bari, Italy

 

Marién Abreu, University of Basilicata, Potenza, Italy

      DU(k) and U(k) - Part I

 

 

Angela Aguglia, University of Bari, Italy

      Minimal covering of all chords of a conic in PG(2,q), q even

 

Maria Teresa Alves Homem de Gouveia, University of Madeira, Funchal, Portugal

      Symplectic Polynomials

 

 

Alberto Amato, University of Catania, Italy

 

 

Laura Bader, University of Napoli, Italy

 

 

 

Giorgio Balconi, University of Pavia, Italy

 

János Bárat, Technical University of Denmark

     Square-free coloring of graphs

 

Elena Barbieri, University of Modena e Reggio Emilia, Italy

 

Claudio Bartolone, University of Palermo, Italy

 

 

Francesco Belardo, University of Messina, Italy

     The largest eigenvalue of caterpillars

 

Anna Benini, University of Brescia, Italy

 

Luigia Berardi, University of L'Aquila, Italy

 

 

Alessandro Bichara, University La Sapienza, Roma, Italy

 

Mauro Biliotti, University of Lecce, Italy

 

Paola Biondi, University of Napoli, Italy

 

Andrea Blunck, Universitaet Hamburg, Germany

      Isomorphisms of projective lines

 

 

Marko Boben, University of Ljubljana, Slovenia

 

 

Maddalena Bonanzinga, University of Messina, Italy

 

 

Arrigo Bonisoli, University of Modena and Reggio Emilia, Italy

      Graph decompositions with some symmetry

 

Giovanna Bonoli, Second University of Napoli, Caserta, Italy

      Linear blocking sets in PG(2,qn)

 

Simona Bonvicini, University of Modena and Reggio Emilia, Italy

      Frattini-based starters in 2-groups

 

 

Ljiljana Brankovic, The University of Newcastle, Australia

      Combinatorial aspects of privacy

 

 

 

Julia M. N. Brown, York University, Toronto, Canada

 

 

Filippo Cammaroto, University of Messina, Italy

      Combinatorial view of same topological properties

 

 

Philippe Cara,  Vrje Universiteit Brussel, Belgium

      On the unique independent set of four elements in PSL(2,31)

 

 

Ilaria Cardinali, University of Siena, Italy

      Semifield spreads of  PG(3,q2) with center Fq. Part I

 

 

Maria Rita Casali, Universiy of Modena and Reggio Emilia, Italy

 

Raffaello Caserta, University of Palermo, Italy

 

 

Alberto Cavicchioli, University of Modena and Reggio Emilia, Italy

      SL(2,C)-representations of knot groups

 

Pier Vittorio Ceccherini, University La Sapienza Roma, Italy

 

 

Yanxun Chang, Jiaotong University Beijing, People's Republic of China

      Large sets of resolvable MTSs and DTSs

 

Miroslava Cimrakova, Ghent University, Belgium

      Searching for minimal blocking sets in generalized quadrangles

 

 

Francesco Ciraulo, University of Palermo, Italy

 

 

 

 

 

Minerva Cordero, University of Texas at Arlington, U.S.A.

     Semifield planes of order p4 and kernel GF(p2)

 

 

Frank De Clerck, Ghent University, Belgium

 

Massimo De Finis, University La Sapienza Roma, Italy

 

 

Vincenzo De Toma, University of Bari, Italy

 

 

 

Stefaan De Winter, Ghent University, Belgium

 

 

 

      Generalized quadrangles admitting a regular abelian group

 

 

 

 

 

An  De Wispelaere, Ghent University, Belgium

 

    Hölz design in H(q)

 

 

 

 

 

 

Jan Degraer, Ghent University, Belgium

      The Strongly Regular Subgraphs of  the McLaughlin Graph

 

 

Alberto Del Fra, University La Sapienza Roma, Italy

 

 

 

 

Alfonso Di Bartolo, University of Palermo, Italy

 

 

      Imprimitive groups acting 2-transitively on blocks

 

 

 

 

 

 

 

 

 

Roberta Di Gennaro, University of Napoli, Italy

 

 

Giorgio Donati, University of Napoli, Italy

 

 

      A subset of the Hermitian surface

 

 

 

William Mark Dukes, Third University of Roma, Italy

      The points-lines-planes conjecture and Knuth's random matroids algorithm

 

 

 

Nicola Durante, University of Napoli, Italy

      On the intersection of two Hermitian surfaces

 

 

Gary L. Ebert, University of Delaware, Newark, U.S.A.

      Higher Dimensional Circle Geometries and Subregular Translation Planes

 

 

Hikoe Enomoto, Hiroshima University, Japan

 

 

Veerle Fack, Ghent University, Belgium

     Maximal partial ovoids in symplectic generalized quadrangles

 

 

 

 

 

 

 

 

 

 

Giovanni Falcone, University of Palermo, Italy

 

 

     k-rational generators of elliptic curves and abelian varieties

 

 

 

 

 

 

 

 

Eva Ferrara Dentice,  Second University of Napoli, Caserta, Italy

 

 

      On planar embeddings

 

 

Daniela Ferrarello, University of Catania, Italy

      Ideals and Graph Theory

 

Carla Fiori, University of Modena and Reggio Emilia, Italy

 

 

Giovanni Fiorito, University of Catania, Italy

      On a recursive formula for the sequence of primes and applications to the twin prime problem

 

 

Anna Franchetta, University La Sapienza Roma, Italy

 

Eliana Francot, University of Lecce, Italy

 

Sveva Freni, Second University of Napoli, Caserta, Italy

 

Dalibor Froncek, University of Minnesota Duluth, U.S.A.

      Covering Km,n-M by bicliques

 

Martin Funk, University of Basilicata, Potenza, Italy

      Tactical (de)-composition of symmetric configuration                  

 

 

Andras Gacs, ELTE, Budapest, Hungary

 

Cyril W.L. Garner, Carleton University, Ottawa, Canada

 

Giuseppe Gentile, University of Messina, Italy

 

John Georges, Trinity College, Hartford, Connecticut, U.S.A.

      Recent Results on Graphs with Non-Surjective Minimum L(2,1)-labelings

 

Gerhard Gerlich, Technische Universitat Braunscheig, Germany

    Counterexamples to a generalization of the multiplier conjecture

 

Dina Ghinelli,  University La Sapienza Roma, Italy

 

Helen Giggins, The University of Newcastle, Australia

      Applications of Spectral Graph Theory to the Security of Genetic Databases

 

Lucia Gionfriddo, University of Catania, Italy

      Strong difference families and their applications to graph-decompositions

 

Mario Gionfriddo, University of Catania, Italy

 

Salvatore Giuffrida, University of Catania, Italy

 

Massimo Giulietti, University of Perugia, Italy

      On the number of concurrent chords of an affinely regular polygon in AG(2,q)

 

Luca Giuzzi, University of Brescia, Italy

      Caps in irregular nearfield planes

 

Patrick Govaerts, Ghent University, Belgium

      Cameron-Liebler line classes in PG(3,4)

 

Harald Gropp, Universitaet Heidelberg, Germany

       1)  Martinetti and de Pasquale  ---  Combinatorics in Sicily 100 years ago

        2)  Colourings of  configurations as mixed hypergraphs

 

Nele Haelvoet, Ghent University, Belgium

 

Willem Haemers, Tilburg University, The Netherlands

      Eigenvalues and perfect matchings

 

Mariko Hagita, Ochanomizu University, Tokyo, Japan

      Error-Correcting Sequence over GF(q)

 

 

Werner Heise,  Technsche Universitaet Muenchen, Germany

 

 

Pavol Hell, SFU, Burnaby B.C., Canada

      Graph partitions

 

 

Anthony Hilton,  Reading University, England

      (r,r+1)-factorizations of (d,d+1)-graphs

 

 

James Hirshfeld, University of Sussex, Brighton, United Kingdom

 

Vikram Jha, Caledonian University, Glasgow, Scotland

      Automorphism Groups of Connected Square Partial Linear Spaces

 

Helmut Karzel, University Cattolica del Sacro Cuore, Brescia, Italy

      The Capodaglio - and the K-derivations of symmetric permutation sets an their use for coordinatizations of hyperbolic geometry

 

Gholamreza B. Khosrovshahi, ICRAM, Iran

      On the ranks of adjacency matrices

 

 

Hubert Kiechle, University of Hamburg, Germany

       Automorphisms of certain design groups

 

Gyorgy Kiss, Eostous Lovand University, Budapest, Hungary

 

 

Gabor Korchmaros, University of Basilicata, Potenza, Italy

 

 

Florica Kramer, Niedernhausen, Germany

      A survey on the distance-colouring of graphs 1

 

 

Horst Kramer, Niedernhausen, Germany

      A survey on the distance-colouring of graphs 2

 

 

Hans-Joachim Kroll, Technsche Universitaet Muenchen, Germany

      Antiblocking systems and PD-sets

 

Selda Kucukcifci, Koc University, Istanbul, Turkey

      The intersection problem for PBD(5*,3)s

 

Domenico Labbate, University of Bari,  Italy

      DU(k) and U(k) - Part II

 

Bambina Larato, University of Bari, Italy

 

Reinhard Laue, University of Bayreuth, Germany

      Simple 8-Designs from PSL(3,5) and PSL(4,3)

 

Josef Lauri, University of Malta

      An invitation to two-fold orbital digraphs: The disconnected case

 

Enzo Maria Li Marzi, University of Messina, Italy

 

Curt Lindner, Auburn University, Alabama, U.S.A.

      Dexagon Triple Systems

 

 

Petr Lisonek, Simon Fraser University, Burnaby, Canada

      Caps with Free Pairs of Points

 

 

Angelo Lizzio, University of Catania, Italy

 

Giovanni Lo Faro, University of Messina, Italy

 

Pia Lo Re, University of Napoli, Italy

 

Guglielmo Lunardon, University of Napoli, Italy

 

Lorraine Lurie, PACE University,

      A graph-theory analysis of renal gromerular microvascular networks

 

Deirdre Luyckx, Ghent University, Belgium

      Maximal partial spreads of  H(4n+1,q2)

 

Francesca Maggioni, University of Milano Bicocca, Italy

 

 

Angelo Maimone, University of Messina, Italy

 

 

Mario Marchi, University Cattolica del Sacro Cuore, Brescia, Italy

 

Giuseppe Marino, Second University of Napoli, Caserta, Italy

     On the Geometry of Commuting Polarities

 

 

Maria Corinna Marino, University of Messina, Italy

 

 

Luis Martinez, University of the Basque Country, Bilbao, Spain

      Difference Sets, Difference Families and Cyclotomy

 

 

Hajime Matsumura, Keio University, Yokohama, Japan

 

 

Giuseppe Mazzuoccolo, University of Modena and Reggio Emilia, Italy

      Doubly transitive  2-factorizations

 

 

Nicola Melone, Second University of Napoli, Caserta, Italy

 

 

Carlo Meloni, University of Bari, Italy

 

 

Francesca Merola,  University La Sapienza Roma, Italy

      The cycle index of a permutation group and its factorisability

 

Giuseppe Micelli, University of Lecce, Italy

 

Renato Migliorato, University of Messina, Ialy

 

Lorenzo Milazzo, University of Catania, Italy

      Embedding partial bipartite directed cycle systems

 

Salvatore Milici, University of Catania, Italy

 

Dara Moazzami, University of Tehran, Iran

      Twards a measure of vulnerability; The tenacity of a graph

 

 

 

Elisa Montanucci, University of Perugia, Italy

      Abstract ovals of small order

 

 

Alessandro Montinaro, University of Lecce, Italy

      Projective planes of order n having a 2-transitive point-orbit of length at least n/2

 

 

Tim Mussche, Technische Universiteit Eindhoven, The Netherlands

 

 

Silvia Musumeci, University of Palermo, Italy

 

 

Yukiyasu Mutoh, Nagoya University, Japan

      The existence of 4x4 grid-block designs

 

Gábor Nagy, University of Szeged, Hungary

       Direct construction of code loops

 

Vito Napolitano, University of Basilicata, Potenza, Italy

      Semiperspective sets in Galois planes of even order

 

Domenico Olanda, University of Napoli, Italy

 

Fernanda Pambianco, University of Perugia, Italy

       Minimal 1-saturating sets and complete caps in binary projective spaces

 

Bruno Pansera, University of Messina, Italy

 

Stefano Pasotti, University of Trento, Italy

 

Giuseppe Paxia, University of Catania, Italy

 

Silvia Pellegrini, University of Brescia, Italy

 

Jean Claude Petit,

 

Vojislav Petrovic, University of Novi Sad, Serbia and Montenegro

     Kings in multipartite tournaments

 

Silvia Pianta, University Cattolica del Sacro Cuore, Brescia, Italy

 

 

Giustina Pica, University of Napoli, Italy

 

 

 

Alberto Picone, University of Palermo, Italy

 

 

 

Olga Polverino,  Second University of Napoli, Caserta, Italy

      Translation spreads of H(q) and the twisted cubic of PG(3,q)

 

 

Donald Preece, University of Kent, UK

      Da Capo Power-sequence terraces for Zn+1 , with n an odd prime power

 

 

Lou Pretorius, University of Pretoria, South Africa

     Sylvester-Gallai Theorems for Complex Numbers and Quaternions

 

 

Alan Prince, Heriott-Watt University, Edinburgh Scotland, UK

 

 

Gaetano Quattrocchi, University of Catania, Italy

 

 

Pasquale Quattrocchi, Modena, Italy

 

Jorn Quistorff, University of Applied Sciences, Berlin, Germany

      Extremal Sets in the Hamming Permutation Space

 

 

Zoran Radosavljevi'c, University of Belgrade, Serbia and Montenegro

      Decomposition of Smith graphs in maximal reflexive cactuses

Grazia Raguso, University of Bari, Italy

 

Luigia Rella, University of Bari, Italy

 

 

Gloria Rinaldi, University of Modena and Reggio Emilia, Italy

      G-regular 2-factorizations of the complete graph

 

Rosaria Rota, Third University of Roma, Italy

 

 

Janos Ruff, University of Szeged, Hungary

      Note on small semiovals

 

 

Mateja Sajna, University of Ottawa, Canada

      Almost self-complementary graphs

 

Maria Scafati Tallini, University La Sapienza Roma, Italy

 

 

Andrea Scagliola, University of Milano, Italy

      On double graphs

 

 

Ralph-Hardo Schulz, Free University Berlin, Germany

      Decomposition of divisible designs

 

Antonella Sciacca, University of Palermo, Italy

      Actions of Unitary Groups associated with a quadratic field extension

 

Irene Sciriha, University of Malta, Malta

      Singular Graph, Nuts and Fullerenes

 

Alessandro Siciliano, University of Basilicata, Potenza, Italy

 

Angelo Sonnino, University of Basilicata, Potenza, Italy

       Computational results on transitive hyperovals

 

 

Fulvia Spaggiari, University of Modena and Reggio Emilia, Italy

        On the combinatorics of  piecewise-linear manifolds

 

 

Antonino Giorgio Spera, University of Palermo, Italy

        Automorphisms of  Generalized Algebraic-Geometry Codes

 

 

Milos Stojakovic, ETH Zurich, Switzerland

        Positional games on random graphs

 

   

 

Violet R. Syrotiuk, Arizona State University, Tempe, U.S.A.

       Complete Directed Bipartite Graph Decompositions and Energy-Limited Sensor Networks

 

 

Pèter Sziklai, Eotvos University, Budapest, Hungary

      Partial flocks of the quadratic cone

 

 

Tamàs Szonyi, Eotvos Lorand University, Budapest, Hungary

        On some stability theorems in finite geometry

 

 

Luca Tallini, University of Teramo, Italy

        On decoding some binary error control codes

 

 

 

Behruz Tayfeh-Rezai, IPM Tehran, Iran

       3-designs from projective special linear groups

 

Momme Johs Thomsen, Universitaet der Bundeswehr Hamburg, Germany

 

 

Cristina Tonesi, Ghent University, Belgium

 

      Distance-regular (0,a)-reguli

 

 

Antoinette Tripodi, University of Messina, Italy

      The Doyen-Wilson theorem for l-fold kite systems

 

 

Rocco Trombetti, University of Napoli, Italy

      Semifield spreads of  PG(3,q2) with center Fq. Part II

 

 

Alessandra Vaccaro, University of Palermo, Italy

 

 

 

 

 

 

Pieter Vandecasteele, Ghent University, Belgium

 

 

Preben Vestergaard, University of Aalborg, Denmark

      Equipackable graphs

 

 

Merce Villanueva,

 

 

Rita Vincenti, University of Perugia, Italy

     Characterization of linear codes and related classical varieties

 

 

Alfred Wassermann, University of Bayreuth, Germany

      Optimal Linear Codes From Projective Groups

 

 

Zsuzsa Weiner, Renyi Institute of the Hungarian Academy of Science, Budapest, Hungary

      On some stability theorems in finite geometry

 

 

Joost Winne, Ghent University, Belgium

    Construction techniques for incidence structures

 

 

Norma Zagaglia, University of Milano, Italy

      On particular graphic matroids

 

 

Joseph Zaks, University of Haifa, Israel

      On the Beckman-Quarles theorem for rational spaces

 

 

Corrado Zanella, University of Padova, Italy

 

 

Elena Zizioli, University of Brescia, Italy

 

 

Fulvio Zuanni, University of L'Aquila, Italy

      Constructions for cyclic Steiner k-cycle systems

 

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