Willem H. Haemers

59 papers A* 1Journal 56Unranked 1
YearRankTypeTitle / Venue / Authors
2025 J jnl
Divisible design graphs from the symplectic graph.
Des. Codes Cryptogr.
Bart De Bruyn, Sergey Goryainov, Willem H. Haemers, Leonid Shalaginov
2024 J jnl
The signed graphs with two eigenvalues unequal to ±1.
Appl. Math. Comput.
Willem H. Haemers, Hatice Topcu
2022 J jnl
Spectral symmetry in conference matrices.
Des. Codes Cryptogr.
Willem H. Haemers, Leila Parsaei-Majd
2021 J jnl
Spectra of strongly Deza graphs.
Discret. Math.
Saieed Akbari, Willem H. Haemers, Mohammad Ali Hosseinzadeh, Vladislav V. Kabanov, Elena V. Konstantinova, Leonid Shalaginov
2021 J jnl
The chromatic index of strongly regular graphs.
Ars Math. Contemp.
Sebastian M. Cioaba, Krystal Guo, Willem H. Haemers
2020 J jnl
Cospectral pairs of regular graphs with different connectivity.
Discuss. Math. Graph Theory
Willem H. Haemers
2020 J jnl
On NP-hard graph properties characterized by the spectrum.
Discret. Appl. Math.
Omid Etesami, Willem H. Haemers
2020 J jnl
On sign-symmetric signed graphs.
Ars Math. Contemp.
Ebrahim Ghorbani, Willem H. Haemers, Hamid Reza Maimani, Leila Parsaei-Majd
2019 J jnl
Graph switching, 2-ranks, and graphical Hadamard matrices.
Discret. Math.
Aida Abiad, Steve Butler, Willem H. Haemers
2019 J jnl
On the Spectral Characterization of Mixed Extensions of P
Electron. J. Comb.
Willem H. Haemers, Sezer Sorgun, Hatice Topcu
2019 J jnl
Spectral characterization of mixed extensions of small graphs.
Discret. Math.
Willem H. Haemers
2019 J jnl
The graphs cospectral with the pineapple graph.
Discret. Appl. Math.
Hatice Topcu, Sezer Sorgun, Willem H. Haemers
2017 J jnl
Preface to the special issue dedicated to Andries E. Brouwer.
Des. Codes Cryptogr.
Aart Blokhuis, Edwin R. van Dam, Willem H. Haemers, Jack H. Koolen
2017 J jnl
The graphs with all but two eigenvalues equal to -2 or 0.
Des. Codes Cryptogr.
Sebastian M. Cioaba, Willem H. Haemers, Jason R. Vermette
2016 J jnl
Switched symplectic graphs and their 2-ranks.
Des. Codes Cryptogr.
Aida Abiad, Willem H. Haemers
2015 J jnl
Cospectral regular graphs with and without a perfect matching.
Discret. Math.
Zoltán Blázsik, Jay Cummings, Willem H. Haemers
2014 J jnl
Regular graphs with maximal energy per vertex.
J. Comb. Theory B
Edwin R. van Dam, Willem H. Haemers, Jack H. Koolen
2014 J jnl
Spectral characterizations of almost complete graphs.
Discret. Appl. Math.
Marc Cámara, Willem H. Haemers
2014 J jnl
Walk-regular divisible design graphs.
Des. Codes Cryptogr.
Dean Crnkovic, Willem H. Haemers
2012 J jnl
Cospectral Graphs and Regular Orthogonal Matrices of Level 2.
Electron. J. Comb.
Aida Abiad, Willem H. Haemers
2012 J jnl
Preface: Geometric and algebraic combinatorics.
Des. Codes Cryptogr.
Edwin R. van Dam, Willem H. Haemers
2012 J jnl
The graph with spectrum 141 240 (-4)10 (-6)9.
Des. Codes Cryptogr.
Aart Blokhuis, Andries E. Brouwer, Willem H. Haemers
2012 J jnl
The maximum order of adjacency matrices of graphs with a given rank.
Des. Codes Cryptogr.
Willem H. Haemers, M. J. P. Peeters
2011 J jnl
An odd characterization of the generalized odd graphs.
J. Comb. Theory B
Edwin R. van Dam, Willem H. Haemers
2011 J jnl
Divisible design graphs.
J. Comb. Theory A
Willem H. Haemers, Hadi Kharaghani, Maaike A. Meulenberg
2011 — ch.
Matrices for graphs, designs and codes.
Information Security, Coding Theory and Related Combinatorics
Willem H. Haemers
2010 J jnl
Preface: Geometric and Algebraic Combinatorics.
Eur. J. Comb.
Edwin R. van Dam, Willem H. Haemers
2010 J jnl
Strongly regular graphs with parameters (4m
Eur. J. Comb.
Willem H. Haemers, Qing Xiang
2009 J jnl
Developments on spectral characterizations of graphs.
Discret. Math.
Edwin R. van Dam, Willem H. Haemers
2009 J jnl
Matchings in regular graphs from eigenvalues.
J. Comb. Theory B
Sebastian M. Cioaba, David A. Gregory, Willem H. Haemers
2007 J jnl
Geometric and algebraic combinatorics.
Eur. J. Comb.
Edwin R. van Dam, Willem H. Haemers
2007 J jnl
On 3-chromatic distance-regular graphs.
Des. Codes Cryptogr.
Aart Blokhuis, Andries E. Brouwer, Willem H. Haemers
2006 J jnl
5-chromatic strongly regular graphs.
Discret. Math.
Nick C. Fiala, Willem H. Haemers
2006 J jnl
Characterizing distance-regularity of graphs by the spectrum.
J. Comb. Theory A
Edwin R. van Dam, Willem H. Haemers, Jacobus H. Koolen, Edward Spence
2006 J jnl
Self-dual, not self-polar.
Discret. Math.
Andries E. Brouwer, Peter J. Cameron, Willem H. Haemers, Donald A. Preece
2005 J jnl
Preface.
Des. Codes Cryptogr.
Aart Blokhuis, Willem H. Haemers
2004 J jnl
Enumeration of cospectral graphs.
Eur. J. Comb.
Willem H. Haemers, Edward Spence
2004 J jnl
Johan Jacob Seidel 1919-2001.
Eur. J. Comb.
Eiichi Bannai, Willem H. Haemers, Patrick Solé
2001 J jnl
Bicliques and Eigenvalues.
J. Comb. Theory B
Willem H. Haemers
2001 J jnl
The Pseudo-geometric Graphs for Generalized Quadrangles of Order (3,
Eur. J. Comb.
Willem H. Haemers, Edward Spence
2000 J jnl
Preface.
Des. Codes Cryptogr.
Aart Blokhuis, Willem H. Haemers
2000 J jnl
The Search for Pseudo Orthogonal Latin Squares of Order Six.
Des. Codes Cryptogr.
Frans C. Bussemaker, Willem H. Haemers, Edward Spence
1999 J jnl
Binary Codes of Strongly Regular Graphs.
Des. Codes Cryptogr.
Willem H. Haemers, René Peeters, Jeroen M. van Rijckevorsel
1999 J jnl
Minimum resolvable coverings with small parallel classes.
Discret. Math.
Willem H. Haemers
1998 J jnl
Graphs with constant µ and µ_.
Discret. Math.
Edwin R. van Dam, Willem H. Haemers
1997 J jnl
Disconnected Vertex Sets and Equidistant Code Pairs.
Electron. J. Comb.
Willem H. Haemers
1996 J jnl
Spreads in Strongly Regular Graphs.
Des. Codes Cryptogr.
Willem H. Haemers, Vladimir D. Tonchev
1995 J jnl
Quasi-Symmetric Designs Related to the Triangular Graph.
Des. Codes Cryptogr.
Matthijs J. Coster, Willem H. Haemers
1993 J jnl
A Design and a Code Invariant under the Simple Group Co
J. Comb. Theory A
Willem H. Haemers, Christopher Parker, Vera Pless, Vladimir D. Tonchev
1993 J jnl
The Gewirtz Graph: An Exercise in the Theory of Graph Spectra.
Eur. J. Comb.
Andries E. Brouwer, Willem H. Haemers
1992 J jnl
Some 2-ranks.
Discret. Math.
Andries E. Brouwer, Henny A. Wilbrink, Willem H. Haemers
1992 J jnl
Structure and uniqueness of the (81, 20, 1, 6) strongly regular graph.
Discret. Math.
Andries E. Brouwer, Willem H. Haemers
1991 J jnl
Divisible designs with
J. Comb. Theory A
Willem H. Haemers
1991 J jnl
Regular 2-Graphs and Extensions of Partial Geometries.
Eur. J. Comb.
Willem H. Haemers
1989 J jnl
A (49, 16, 3, 6) Strongly Regular Graph Does Not Exist.
Eur. J. Comb.
Frans C. Bussemaker, Willem H. Haemers, R. Matron, Henny A. Wilbrink
1989 J jnl
On (
J. Comb. Theory A
Frans C. Bussemaker, Willem H. Haemers, J. J. Seidel, Edward Spence
1985 A* conf
Access Control at the Netherlands Postal and Telecommunications Services.
CRYPTO
Willem H. Haemers
1984 — conf
A Contribution to the Techniques of Traffic Engineering in Communications Networks With Waiting Facilities.
ICC (1)
B. Sanders, Willem H. Haemers, R. Wilcke
1979 J jnl
On Some Problems of Lovász Concerning the Shannon Capacity of a Graph.
IEEE Trans. Inf. Theory
Willem H. Haemers