Math Links

AMS  American Mathematical Society-(Mathematics Research and Scholarship)
CMS  Canadian Mathematical Society
EMS  The European Mathematical Society-(European Mathematical Information Service)
DBW  Links to Combinatorial Conferences - Douglas West
PJC  British Combinatorial Committee-(British Combinatorial Conferences) - Peter Cameron

EJC  The Electronic Journal of Combinatorics
ELA  Electronic Journal of LINEAR ALGEBRA-(Published by ILAS - The International Linear Algebra Society)
JGT  Journal of Graph Theory
SIAM JDM  SIAM Journal on Discrete Mathematics
JCTA   Journal of Combinatorial Theory, Series A
JCTB   Journal of Combinatorial Theory, Series B
DM   Discrete Mathematics
DAM  Discrete Applied Mathematics
EURJC   European Journal of Combinatorics
CCA  Combinatorica
LAA  Linear Algebra and its Applications
GC  Graphs and Combinatorics
CPC Combinatorics, Probability and Computing
RSA  Random Structures and Algorithms

  Papers & Preprints

• Covering complete hypergraphs with cuts of minimum total size, with Andre Kundgen, submitted.
• Asymptotic results on the spectral radius and the diameter of graphs, with Edwin van Dam, Jack Koolen and Jae-Ho Lee , Linear Algebra and its Applications, to appear.
• Eigenvalues and edge-connectivity of regular graphs, Linear Algebra and its Applications, to appear.
• A lower bound for the spectral radius of graphs with fixed diameter, with Edwin van Dam, Jack Koolen and Jae-Ho Lee , European Journal of Combinatorics, to appear.
• Some applications of eigenvalues of graphs, Chapter in Structural Analysis of Complex Networks, Birkhauser, to appear.
  
• A first course in graph theory and combinatorics, with Ram Murty, Hindustan Book Agency, 186pp monograph (2009).
• On decompositions of complete hypergraphs, with Andre Kundgen and Jacques Verstraete, J. Combin. Theory, Series A, (2009).
• Matchings in regular graphs from eigenvalues, with David Gregory and Willem Haemers, J. Combin. Theory, Series B, (2009).
• Expander graphs and gaps between primes, with Ram Murty, Forum Mathematicum, (2008).
• The minimum degree distance of graphs with given order and size, with Orest Bucicovschi, Discrete Applied Math., (2008).
• Zero forcing sets and the minimum rank of graphs, Linear Algebra and its Applications, with 18 co-authors, (2008).
• Spectral independence number and densest subgraph of a graph, with Reid Andersen, Journal of Universal Computer Science, (2007).
• The spectral radius and the maximum degree of irregular graphs, The Electronic Journal of Combinatorics, (2007).
• Principal eigenvectors of irregular graphs, with David Gregory, Electronic Journal of Linear Algebra, (2007).
• Extreme eigenvalues of nonregular graphs, with David Gregory and Vlado Nikiforov, J. Combin. Theory, Series B, (2007).
• Large matchings from eigenvalues, with David Gregory, Linear Algebra and its Applications, (2007).
• Closed walks and eigenvalues of Abelian Cayley graphs, Comptes Rendus Mathematique, (2006).
• Eigenvalues of graphs and a simple proof of a theorem of Greenberg, Linear Algebra and its Applications, (2006).
• On the extreme eigenvalues of regular graphs, J. Combin. Theory, Series B, (2006).
• Sums of powers of the degrees of a graph, Discrete Mathematics, (2006).
• Eigenvalues, Expanders and Gaps between Primes, Ph.D. Thesis (2006), +90pp.
• Perfect matchings, eigenvalues and expansion , Comptes Rendus Mathematiques,Vol.27 (2005).
• Bounds on the Turan density of PG(3,2), The Electronic Journal of Combinatorics, 11, (2004).
• Problem 11066, American Math. Monthly 111 (2004). Solution
• The NP-completness of some edge partitioning problems, M.Sc. Thesis, (2002).

• Banff Workshop, Matrices described by Patterns, Jan 31-Feb 5, 2010
• AMS Conference, San Francisco, January  13-16, 2010
  
• AMS-KMS Conference, South Korea, December 16-20, 2009
  
• Spectral Graph Theory in Rio, December 2008
• AMS Meeting Worcester, April 2009
• 2nd CanaDAM Conference, Montreal, May 2009

Current Courses/Seminars

• Discrete Mathematics Seminar University of Delaware
• Math 672, Vector Spaces, Fall 2009
  

Recent Courses/Seminars  

• Math243, Spring 2009