Research

These are a few of my papers available in electronic format:  Vertex-deleted and edge-deleted subgraphs , Collected Papers (A collection of papers by members of the University of Malta on the occasion of its quartercentenary celebrations), edited by R.Ellul-Micallef & S.Fiorini, Malta, 1992. Figures for this paper are in separate files: Fig2.1 , Fig3.1 , Fig5.1 , Fig6.1 , Fig7.1 . Pseudsosimilarity in graphs---A survey , Ars Combinatoria 46 (1997) 77--95. On a formula for the number of Euler trails for a class of digraphs , Discrete Math. 163 (1997) 307--312. Cayley graphs, pseudosimilar edges and line-graphs , to appear in J. Combin. Math. & Combin. Computing On a determinant formula for enumerating Euler trails in a class of digraphs , 5th Workshop in Combinatorics, University of Messina, Italy, November 1999. Constructing graphs with several pseudosimilar edges or vertices , Combinatorics 2000, Gaeta, Italy, May-June 2000. On disconnected graphs with large reconstruction number, (jointly with Kevin Asciak) to appear in Ars Combinatoria. Two-fold Orbital Digraphs, (jointly with Russell Mizzi & Raffaele Scapellato); Slides on TODs presented at Combinatorics04, Catania. Some open problems .

home | course notes | past papers | other links Email: josef.lauri@um.edu.mt Tel (Office): +(356) 32902101 Tel (Home): +(356) 21384696 Fax: +(356) 21312110 +(356) 21389859 Mob: +(356) 79384696 Department of Mathematics University of Malta Tal-Qroqq Msida MALTA Last update: Sep 2004 University of Malta  home page