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Authors |
Title |
Venue |
Year |
Link |
Author keywords |
| 1 | Sebastian M. Cioaba, Kijung Kim, Jack H. Koolen |
On a conjecture of Brouwer involving the connectivity of strongly regular graphs.  |
J. Comb. Theory, Ser. A  |
2012 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Jongyook Park |
Distance-regular graphs with a2 or c2 at least half the valency. |
J. Comb. Theory, Ser. A |
2012 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Alice Lesser, Vincent Moulton, Taoyang Wu |
Injective optimal realizations of finite metric spaces. |
Discrete Mathematics |
2012 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner |
Basic Phylogenetic Combinatorics. |
|
2012 |
RDF |
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| 1 | Aleksandar Jurisic, Jack H. Koolen |
Classification of the family AT4(qs, q, q) of antipodal tight graphs. |
J. Comb. Theory, Ser. A |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Sebastian M. Cioaba, Kijung Kim, Jack H. Koolen |
On a conjecture of Brouwer regarding the connectivity of strongly regular graphs |
CoRR |
2011 |
DBLP BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
Blocks and Cut Vertices of the Buneman Graph. |
SIAM J. Discrete Math. |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Sebastian M. Cioaba, Edwin R. van Dam, Jack H. Koolen, Jae-Ho Lee |
A lower bound for the spectral radius of graphs with fixed diameter. |
Eur. J. Comb. |
2010 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Jongyook Park |
Shilla distance-regular graphs. |
Eur. J. Comb. |
2010 |
DBLP DOI BibTeX RDF |
|
| 1 | S. Bang, Akira Hiraki, Jack H. Koolen |
Delsarte Set Graphs with Small c2. |
Graphs and Combinatorics |
2010 |
DBLP DOI BibTeX RDF |
|
| 1 | Jacobus H. Koolen, Sejeong Bang |
On distance-regular graphs with smallest eigenvalue at least -m. |
J. Comb. Theory, Ser. B |
2010 |
DBLP DOI BibTeX RDF |
|
| 1 | Greg Markowsky, Jacobus H. Koolen |
A Conjecture of Biggs Concerning the Resistance of a Distance-Regular Graph. |
Electr. J. Comb. |
2010 |
DBLP BibTeX RDF |
|
| 1 | Saieed Akbari, Ebrahim Ghorbani, Jacobus H. Koolen, Mohammad Reza Oboudi |
On Sum of Powers of the Laplacian and Signless Laplacian Eigenvalues of Graphs. |
Electr. J. Comb. |
2010 |
DBLP BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner |
An Algorithm for Computing Cutpoints in Finite Metric Spaces. |
J. Classification |
2010 |
DBLP DOI BibTeX RDF |
|
| 1 | Sejeong Bang, Tatsuya Fujisaki, Jack H. Koolen |
The spectra of the local graphs of the twisted Grassmann graphs. |
Eur. J. Comb. |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Alice Lesser, Vincent Moulton |
Optimal realizations of generic five-point metrics. |
Eur. J. Comb. |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Andries E. Brouwer, Jack H. Koolen |
The vertex-connectivity of a distance-regular graph. |
Eur. J. Comb. |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Ebrahim Ghorbani, Jack H. Koolen, Jae Young Yang |
Bounds for the Hückel Energy of a Graph. |
Electr. J. Comb. |
2009 |
DBLP BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
A graph-theoretical invariant of topological spaces. |
Appl. Math. Lett. |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | S. Grünewald, Jacobus H. Koolen, W. S. Lee |
Quartets in maximal weakly compatible split systems. |
Appl. Math. Lett. |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Jacobus H. Koolen, W. S. Lee, William J. Martin |
Arithmetic completely regular codes |
CoRR |
2009 |
DBLP BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner |
An algorithm for computing cutpoints in finite metric spaces |
CoRR |
2009 |
DBLP BibTeX RDF |
|
| 1 | Sejeong Bang, Hyun Kwang Kim, Jack H. Koolen, Mitsugu Hirasaka, Sung Yell Song |
Preface. |
Discrete Mathematics |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Aleksandar Jurisic, Jack H. Koolen, Arjana Zitnik |
Triangle-free distance-regular graphs with an eigenvalue multiplicity equal to their valency and diameter 3. |
Eur. J. Comb. |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Kris Coolsaet, Aleksandar Jurisic, Jack H. Koolen |
On triangle-free distance-regular graphs with an eigenvalue multiplicity equal to the valency. |
Eur. J. Comb. |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
Compatible decompositions and block realizations of finite metrics. |
Eur. J. Comb. |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Y. B. Choe, Katharina T. Huber, Jacobus H. Koolen, Y. S. Kwon, Vincent Moulton |
Counting vertices and cubes in median graphs of circular split systems. |
Eur. J. Comb. |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
Block realizations of finite metrics and the tight-span construction I: The embedding theorem. |
Appl. Math. Lett. |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
Cut points in metric spaces. |
Appl. Math. Lett. |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner |
Characterizing Cell-Decomposable Metrics. |
Electr. J. Comb. |
2008 |
DBLP BibTeX RDF |
|
| 1 | Jack H. Koolen, Alice Lesser, Vincent Moulton |
Concerning the Relationship between Realizations and Tight Spans of Finite Metrics. |
Discrete & Computational Geometry |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Sejeong Bang, Jacobus H. Koolen, Vincent Moulton |
Two theorems concerning the Bannai-Ito conjecture. |
Eur. J. Comb. |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Sejeong Bang, Akira Hiraki, Jacobus H. Koolen |
Delsarte clique graphs. |
Eur. J. Comb. |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
An Algorithm for Computing Virtual Cut Points in Finite Metric Spaces. |
COCOA |
2007 |
DBLP DOI BibTeX RDF |
Mathematics Subject Classification codes 05C05, 05C12, 92B10 |
| 1 | Hans-Jürgen Bandelt, Victor Chepoi, Andreas W. M. Dress, Jack H. Koolen |
Combinatorics of lopsided sets. |
Eur. J. Comb. |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Edwin R. van Dam, Willem H. Haemers, Jacobus H. Koolen, Edward Spence |
Characterizing distance-regularity of graphs by the spectrum. |
J. Comb. Theory, Ser. A |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Sejeong Bang, Akira Hiraki, Jacobus H. Koolen |
Improving diameter bounds for distance-regular graphs. |
Eur. J. Comb. |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
On the structure of the tight-span of a totally split-decomposable metric. |
Eur. J. Comb. |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Aleksandar Jurisic, Jack H. Koolen, Stefko Miklavic |
Triangle- and pentagon-free distance-regular graphs with an eigenvalue multiplicity equal to the valency. |
J. Comb. Theory, Ser. B |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Akira Hiraki, Jack H. Koolen |
A generalization of an inequality of Brouwer-Wilbrink. |
J. Comb. Theory, Ser. A |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Barbara Holland, Katharina T. Huber, Jack H. Koolen, Vincent Moulton, Jan Weyer-Menkhoff |
Delta additive and Delta ultra-additive maps, Gromov's trees, and the Farris transform. |
Discrete Applied Mathematics |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Sejeong Bang, Jack H. Koolen |
Some Interlacing Results for the Eigenvalues of Distance-regular graphs. |
Des. Codes Cryptography |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
The tight span of an antipodal metric space - Part I: : Combinatorial properties. |
Discrete Mathematics |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Vincent Moulton, Dragan Stevanovic |
The structure of spherical graphs. |
Eur. J. Comb. |
2004 |
DBLP DOI BibTeX RDF |
|
| 1 | Akira Hiraki, Jack H. Koolen |
A Note on Regular Near Polygons. |
Graphs and Combinatorics |
2004 |
DBLP DOI BibTeX RDF |
Regular near polygon, Distance-regular graph |
| 1 | Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
The Tight Span of an Antipodal Metric Space: Part II--Geometrical Properties. |
Discrete & Computational Geometry |
2004 |
DBLP DOI BibTeX RDF |
|
| 1 | Andries E. Brouwer, C. D. Godsil, Jack H. Koolen, William J. Martin |
Width and dual width of subsets in polynomial association schemes. |
J. Comb. Theory, Ser. A |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Andries E. Brouwer, Jack H. Koolen, Mikhail H. Klin |
A Root Graph that is Locally the Line Graph of the Peterson Graph. |
Discrete Mathematics |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Jack H. Koolen, Vincent Moulton |
Addendum to "on line arrangements in the hyperbolic plane" [European J. Combin.23 (2002) 549-557]. |
Eur. J. Comb. |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Sejeong Bang, Jack H. Koolen, Vincent Moulton |
A bound for the number of columns l(c, a, b) in the intersection array of a distance-regular graph. |
Eur. J. Comb. |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Vincent Moulton |
Maximal Energy Bipartite Graphs. |
Graphs and Combinatorics |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Jack H. Koolen, Vincent Moulton |
On Line Arrangements in the Hyperbolic Plane. |
Eur. J. Comb. |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Vincent Moulton |
On a Conjecture of Bannai and Ito: There are Finitely Many Distance-regular Graphs with Degree 5, 6 or 7. |
Eur. J. Comb. |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Vincent Moulton |
Hyperbolic Bridged Graphs. |
Eur. J. Comb. |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Aleksandar Jurisic, Jacobus H. Koolen |
Krein parameters and antipodal tight graphs with diameter 3 and 4. |
Discrete Mathematics |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton |
Six Points Suffice: How to Check for Metric Consistency. |
Eur. J. Comb. |
2001 |
DBLP DOI BibTeX RDF |
|
| 1 | Aleksandar Jurisic, Jack H. Koolen |
Nonexistence of some Antipodal Distance-regular Graphs of Diameter Four. |
Eur. J. Comb. |
2000 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Vincent Moulton, Udo Tönges |
A Classification of the Six-point Prime Metrics. |
Eur. J. Comb. |
2000 |
DBLP DOI BibTeX RDF |
|
| 1 | Aleksandar Jurisic, Jack H. Koolen |
A Local Approach to 1-Homogeneous Graphs. |
Des. Codes Cryptography |
2000 |
DBLP BibTeX RDF |
|
| 1 | Jack H. Koolen, Monique Laurent, Alexander Schrijver |
Equilateral Dimension of the Rectilinear Space. |
Des. Codes Cryptography |
2000 |
DBLP BibTeX RDF |
|
| 1 | Sandi Klavzar, Jack H. Koolen, Henry Martyn Mulder |
Graphs which Locally Mirror the Hypercube Structure. |
Inf. Process. Lett. |
1999 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Vincent Moulton, Udo Tönges |
The coherency index. |
Discrete Mathematics |
1998 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen |
The Distance-regular Graphs with Intersection Number a1!=0 and with an Eigenvalue -1-(b1/2). |
Combinatorica |
1998 |
DBLP DOI BibTeX RDF |
AMS Subject Classification (1991) Classes: 05C |
| 1 | Jacobus H. Koolen |
A Characterization of the Doob Graphs. |
J. Comb. Theory, Ser. B |
1995 |
DBLP DOI BibTeX RDF |
|
| 1 | Jack H. Koolen, Sergey V. Shpectorov |
Distance-regular Graphs the Distance Matrix of which has Only One Positive Eigenvalue. |
Eur. J. Comb. |
1994 |
DBLP DOI BibTeX RDF |
|
| 1 | Andries E. Brouwer, Jacobus H. Koolen |
A new infinite series of regular uniformly geodetic code graphs. |
Discrete Mathematics |
1993 |
DBLP DOI BibTeX RDF |
|
| 1 | Jacobus H. Koolen |
On uniformly geodetic graphs. |
Graphs and Combinatorics |
1993 |
DBLP DOI BibTeX RDF |
|
| 1 | J. M. van den Akker, Jacobus H. Koolen, Rob J. M. Vaessens |
Perfect modes with distinct protective radii. |
Discrete Mathematics |
1990 |
DBLP DOI BibTeX RDF |
|
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