|
+
PDF
Chat
|
List homomorphisms to separable signed graphs
|
2024
|
Jan Bok
R.L. Brewster
Tomás Feder
Pavol Hell
Nikola Jedličková
|
|
+
PDF
Chat
|
Trees with minimum weighted Szeged index
|
2024
|
Pavol Hell
César Hernández‐Cruz
Seyyed Aliasghar Hosseini
|
|
+
|
Min Orderings and List Homomorphism Dichotomies for Graphs and Signed Graphs
|
2024
|
Jan Bok
Richard C. Brewster
Pavol Hell
Nikola Jedličková
Arash Rafiey
|
|
+
PDF
Chat
|
Strong Cocomparability Graphs and Slash-Free Orderings of Matrices
|
2024
|
Pavol Hell
Jing Huang
Jephian C.-H. Lin
|
|
+
|
List homomorphisms to separable signed graphs
|
2023
|
Jan Bok
R.L. Brewster
Tomás Feder
Pavol Hell
Nikola Jedličková
|
|
+
PDF
Chat
|
List homomorphism problems for signed trees
|
2022
|
Jan Bok
Richard C. Brewster
Tomás Feder
Pavol Hell
Nikola Jedličková
|
|
+
PDF
Chat
|
Describing hereditary properties by forbidden circular orderings
|
2022
|
Santiago Guzmán-Pro
Pavol Hell
César Hernández‐Cruz
|
|
+
PDF
Chat
|
On the Kernel and Related Problems in Interval Digraphs
|
2022
|
Mathew C. Francis
Pavol Hell
Dalu Jacob
|
|
+
|
List Homomorphisms to Separable Signed Graphs
|
2022
|
Jan Bok
Richard C. Brewster
Tomás Feder
Pavol Hell
Nikola Jedličková
|
|
+
|
Min orderings and list homomorphism dichotomies for signed and unsigned graphs
|
2022
|
Jan Bok
R.L. Brewster
Pavol Hell
Nikola Jedličková
Arash Rafiey
|
|
+
|
Strong cocomparability graphs and Slash-free orderings of matrices
|
2022
|
Pavol Hell
Jing Huang
Jephian C.-H. Lin
|
|
+
PDF
Chat
|
Min Orderings and List Homomorphism Dichotomies for Signed and Unsigned Graphs
|
2022
|
Jan Bok
Richard C. Brewster
Pavol Hell
Nikola Jedličková
Arash Rafiey
|
|
+
PDF
Chat
|
Describing hereditary properties by forbidden circular orderings
|
2021
|
Santiago Guzmán-Pro
Pavol Hell
César Hernández‐Cruz
|
|
+
|
Graph homomorphisms
|
2021
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
In praise of homomorphisms
|
2021
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
On the Kernel and Related Problems in Interval Digraphs
|
2021
|
Mathew C. Francis
Pavol Hell
Dalu Jacob
|
|
+
|
Describing hereditary properties by forbidden circular orderings
|
2021
|
Santiago Guzmán-Pro
Pavol Hell
César Hernández‐Cruz
|
|
+
|
Distance-two colourings of Barnette graphs
|
2020
|
Tomás Feder
Pavol Hell
Carlos Subi
|
|
+
|
Minimum Weighted Szeged Index Trees
|
2020
|
Pavol Hell
César Hernández‐Cruz
Seyyed Aliasghar Hosseini
|
|
+
PDF
Chat
|
List homomorphism problems for signed graphs
|
2020
|
Jan Bok
Richard C. Brewster
Tomás Feder
Pavol Hell
Nikola Jedličková
|
|
+
|
Hamiltonian cycles in covering graphs of trees
|
2020
|
Pavol Hell
Hiroshi Nishiyama
Ladislav Stacho
|
|
+
|
Partitioning Cographs into Two Forests and One Independent Set
|
2020
|
Pavol Hell
César Hernández‐Cruz
Anurag Sanyal
|
|
+
|
List homomorphism problems for signed trees
|
2020
|
Jan Bok
Richard C. Brewster
Tomás Feder
Pavol Hell
Nikola Jedličková
|
|
+
|
Minimum Weighted Szeged Index Trees
|
2020
|
Pavol Hell
César Hernández‐Cruz
Seyyed Aliasghar Hosseini
|
|
+
|
Strongly chordal digraphs and $\Gamma$-free matrices.
|
2019
|
Pavol Hell
César Hernández‐Cruz
Jing Huang
Jephian C.-H. Lin
|
|
+
|
Vertex arboricity of cographs.
|
2019
|
Sebastián González Hermosillo de la Maza
Pavol Hell
César Hernández‐Cruz
Seyyed Aliasghar Hosseini
Payam Valadkhan
|
|
+
|
Complexity of acyclic colorings of graphs and digraphs with degree and girth constraints.
|
2019
|
Tomás Feder
Pavol Hell
Carlos Subi
|
|
+
|
Comparability and Cocomparability Bigraphs
|
2019
|
Pavol Hell
Jing Huang
Jephian C.-H. Lin
Ross M. McConnell
|
|
+
|
Strongly chordal digraphs and $Γ$-free matrices
|
2019
|
Pavol Hell
César Hernández‐Cruz
Jing Huang
Jephian C.-H. Lin
|
|
+
|
Complexity of acyclic colorings of graphs and digraphs with degree and girth constraints
|
2019
|
Tom' as Feder
Pavol Hell
Carlos Subi
|
|
+
|
Vertex arboricity of cographs
|
2019
|
Sebastián González Hermosillo de la Maza
Pavol Hell
César Hernández Cruz
Seyyed Aliasghar Hosseini
Payam Valadkhan
|
|
+
|
Interval-Like Graphs and Digraphs
|
2018
|
Pavol Hell
Jing Huang
Ross M. McConnell
Arash Rafiey
|
|
+
|
Minimal obstructions to 2-polar cographs
|
2018
|
Pavol Hell
César Hernández‐Cruz
Cláudia Linhares Sales
|
|
+
|
Distance-Two Colorings of Barnette Graphs
|
2018
|
Tomás Feder
Pavol Hell
Carlos Subi
|
|
+
|
Interval-Like Graphs and Digraphs
|
2018
|
Pavol Hell
Jing Huang
Ross M. McConnell
Arash Rafiey
|
|
+
PDF
Chat
|
The complexity of tropical graph homomorphisms
|
2017
|
Florent Foucaud
Ararat Harutyunyan
Pavol Hell
Sylvain Legay
Yannis Manoussakis
Reza Naserasr
|
|
+
|
Complexity of Correspondence Homomorphisms
|
2017
|
Tomás Feder
Pavol Hell
|
|
+
|
Minimal obstructions to $2$-polar cographs
|
2017
|
Pavol Hell
César Hernández‐Cruz
Cláudia Linhares Sales
|
|
+
|
Hamiltonian Cycles in Covering Graphs of Trees
|
2017
|
Pavol Hell
Hiroshi Nishiyama
Ladislav Stacho
|
|
+
|
Complexity of Correspondence Homomorphisms
|
2017
|
Tomás Feder
Pavol Hell
|
|
+
|
Minimal obstructions to $2$-polar cographs
|
2017
|
Pavol Hell
César Hernández‐Cruz
Cláudia Linhares Sales
|
|
+
|
Colourings, homomorphisms, and partitions of transitive digraphs
|
2016
|
Tomás Feder
Pavol Hell
César Hernández‐Cruz
|
|
+
|
The complexity of signed graph and edge-coloured graph homomorphisms
|
2016
|
Richard C. Brewster
Florent Foucaud
Pavol Hell
Reza Naserasr
|
|
+
|
Bi-Arc Digraphs and Conservative Polymorphisms
|
2016
|
Pavol Hell
Arash Rafiey
|
|
+
|
Minimum Cost Homomorphisms with Constrained Costs
|
2016
|
Pavol Hell
Mayssam Mohammadi Nevisi
|
|
+
|
Minimal digraph obstructions for small matrices
|
2016
|
Pavol Hell
César Hernández‐Cruz
|
|
+
PDF
Chat
|
Minimum Cost Homomorphisms with Constrained Costs
|
2016
|
Pavol Hell
Mayssam Mohammadi Nevisi
|
|
+
|
Bi-Arc Digraphs and Conservative Polymorphisms
|
2016
|
Pavol Hell
Akbar Rafiey
Arash Rafiey
|
|
+
|
Minimum Cost Homomorphisms with Constrained Costs
|
2016
|
Pavol Hell
Mayssam Mohammadi Nevisi
|
|
+
|
Complexity of coloring graphs without paths and cycles
|
2015
|
Pavol Hell
Shenwei Huang
|
|
+
|
Colourings, Homomorphisms, and Partitions of Transitive Digraphs
|
2015
|
Tomás Feder
Pavol Hell
César Hernández‐Cruz
|
|
+
|
Ferrers dimension of grid intersection graphs
|
2015
|
Steven Chaplick
Pavol Hell
Yota Otachi
Toshiki Saitoh
Ryuhei Uehara
|
|
+
|
Influence diffusion in social networks under time window constraints
|
2015
|
Luisa Gargano
Pavol Hell
Joseph G. Peters
Ugo Vaccaro
|
|
+
|
Colourings, Homomorphisms, and Partitions of Transitive Digraphs
|
2015
|
Tomás Feder
Pavol Hell
César Hernández‐Cruz
|
|
+
|
Forbidden structure characterization of circular-arc graphs and a certifying recognition algorithm
|
2014
|
Mathew C. Francis
Pavol Hell
Juraj Stacho
|
|
+
|
Point determining digraphs, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" display="inline" overflow="scroll"><mml:mrow><mml:mo>{</mml:mo><mml:mn>0</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn><mml:mo>}</mml:mo></mml:mrow></mml:math>-matrix partitions, and dualities in full homomorphisms
|
2014
|
Pavol Hell
César Hernández‐Cruz
|
|
+
|
Ordering without forbidden patterns
|
2014
|
Pavol Hell
Bojan Mohar
Arash Rafiey
|
|
+
|
H-coloring degree-bounded (acyclic) digraphs
|
2014
|
Pavol Hell
Aurosish Mishra
|
|
+
|
Connected obstructions to full graph homomorphisms
|
2014
|
Pavol Hell
Aleš Pultr
|
|
+
PDF
Chat
|
Complexity of Coloring Graphs without Paths and Cycles
|
2014
|
Pavol Hell
Shenwei Huang
|
|
+
|
Intersection Dimension of Bipartite Graphs
|
2014
|
Steven Chaplick
Pavol Hell
Yota Otachi
Toshiki Saitoh
Ryuhei Uehara
|
|
+
PDF
Chat
|
Ordering without Forbidden Patterns
|
2014
|
Pavol Hell
Bojan Mohar
Arash Rafiey
|
|
+
|
Blocking Quadruple: A New Obstruction to Circular-Arc Graphs
|
2014
|
Mathew C. Francis
Pavol Hell
Juraj Stacho
|
|
+
|
Ordering without forbidden patterns
|
2014
|
Pavol Hell
Bojan Mohar
Arash Rafiey
|
|
+
|
Forbidden structure characterization of circular-arc graphs and a certifying recognition algorithm
|
2014
|
Mathew C. Francis
Pavol Hell
Juraj Stacho
|
|
+
PDF
Chat
|
Space complexity of list <i>H</i>-colouring: a dichotomy
|
2013
|
László Egri
Pavol Hell
Benoît Larose
Arash Rafiey
|
|
+
|
A simple combinatorial interpretation of certain generalized Bell and Stirling numbers
|
2013
|
Pietro Codara
Ottavio M. D’Antona
Pavol Hell
|
|
+
|
Semilattice polymorphisms and chordal graphs
|
2013
|
Pavol Hell
Mark Siggers
|
|
+
|
Matrix partitions of split graphs
|
2013
|
Tomás Feder
Pavol Hell
Oren Shklarsky
|
|
+
PDF
Chat
|
Obstructions to chordal circular-arc graphs of small independence number
|
2013
|
Mathew C. Francis
Pavol Hell
Juraj Stacho
|
|
+
|
Space complexity of list H-colouring: a dichotomy
|
2013
|
László Egri
Pavol Hell
Benoît Larose
Arash Rafiey
|
|
+
|
Point determining digraphs, $\{0,1\}$-matrix partitions, and dualities in full homomorphisms
|
2013
|
Pavol Hell
César Hernández‐Cruz
|
|
+
|
Graph partitions with prescribed patterns
|
2013
|
Pavol Hell
|
|
+
|
Matrix Partitions of Split Graphs
|
2013
|
Tomás Feder
Pavol Hell
Oren Shklarsky
|
|
+
PDF
Chat
|
Influence Diffusion in Social Networks under Time Window Constraints
|
2013
|
Luisa Gargano
Pavol Hell
Joseph G. Peters
Ugo Vaccaro
|
|
+
|
Complexity of Coloring Graphs without Paths and Cycles
|
2013
|
Pavol Hell
Shenwei Huang
|
|
+
PDF
Chat
|
Small H-Coloring Problems for Bounded Degree Digraphs
|
2013
|
Pavol Hell
Aurosish Mishra
|
|
+
|
Point determining digraphs, $\{0,1\}$-matrix partitions, and dualities in full homomorphisms
|
2013
|
Pavol Hell
César Hernández‐Cruz
|
|
+
|
Matrix Partitions of Split Graphs
|
2013
|
Tomás Feder
Pavol Hell
Oren Shklarsky
|
|
+
|
Space complexity of list H-colouring: a dichotomy
|
2013
|
László Egri
Pavol Hell
Benoît Larose
Arash Rafiey
|
|
+
|
Influence Diffusion in Social Networks under Time Window Constraints
|
2013
|
Luisa Gargano
Pavol Hell
Joseph G. Peters
Ugo Vaccaro
|
|
+
|
Small H-coloring problems for bounded degree digraphs
|
2012
|
Aurosish Mishra
Pavol Hell
|
|
+
|
Obstructions to chordal circular-arc graphs of small independence number
|
2012
|
Mathew C. Francis
Pavol Hell
Juraj Stacho
|
|
+
|
On edge-sets of bicliques in graphs
|
2012
|
Marina Groshaus
Pavol Hell
Juraj Stacho
|
|
+
|
The Dichotomy of Minimum Cost Homomorphism Problems for Digraphs
|
2012
|
Pavol Hell
Arash Rafiey
|
|
+
|
Monotone Proper Interval Digraphs and Min-Max Orderings
|
2012
|
Pavol Hell
Arash Rafiey
|
|
+
|
Counting Partitions of Graphs
|
2012
|
Pavol Hell
Miki Hermann
Mayssam Mohammadi Nevisi
|
|
+
|
Algebraic graph theory - a volume dedicated to Gert Sabidussi on the occasion of his 80th birthday
|
2012
|
Wilfried Imrich
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
Obstructions to chordal circular-arc graphs of small independence number
|
2012
|
Mathew C. Francis
Pavol Hell
Juraj Stacho
|
|
+
|
Small H-coloring problems for bounded degree digraphs
|
2012
|
Aurosish Mishra
Pavol Hell
|
|
+
|
Dichotomy for tree-structured trigraph list homomorphism problems
|
2011
|
Tomás Feder
Pavol Hell
David G. Schell
Juraj Stacho
|
|
+
|
The dichotomy of list homomorphisms for digraphs
|
2011
|
Pavol Hell
Arash Rafiey
|
|
+
PDF
Chat
|
The Dichotomy of List Homomorphisms for Digraphs
|
2011
|
Pavol Hell
Arash Rafiey
|
|
+
|
Dichotomy for tree-structured trigraph list homomorphism problems
|
2010
|
Tomás Feder
Pavol Hell
David G. Schell
Juraj Stacho
|
|
+
|
Faithful Representations of Graphs by Islands in the Extended Grid
|
2010
|
Michael D. Coury
Pavol Hell
Jan Kratochvı́l
Tomáš Vyskočil
|
|
+
|
Dichotomy for tree-structured trigraph list homomorphism problems
|
2010
|
Tomás Feder
Pavol Hell
David G. Schell
Juraj Stacho
|
|
+
|
The Dichotomy of List Homomorphisms for Digraphs
|
2010
|
Pavol Hell
Arash Rafiey
|
|
+
|
Adaptable chromatic number of graph products
|
2009
|
Pavol Hell
Zhishi Pan
Tsai‐Lien Wong
Xuding Zhu
|
|
+
|
Duality for Min-Max Orderings and Dichotomy for Min Cost Homomorphisms
|
2009
|
Arash Rafiey
Pavol Hell
|
|
+
PDF
Chat
|
Colouring, constraint satisfaction, and complexity
|
2008
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
On the adaptable chromatic number of graphs
|
2008
|
Pavol Hell
Xuding Zhu
|
|
+
|
Minimum Cost Homomorphisms to Reflexive Digraphs
|
2008
|
Arvind Gupta
Pavol Hell
Mohammad M. Karimi
Arash Rafiey
|
|
+
|
On Injective Colourings of Chordal Graphs
|
2008
|
Pavol Hell
André Raspaud
Juraj Stacho
|
|
+
|
A dichotomy for minimum cost graph homomorphisms
|
2008
|
Gregory Gutin
Pavol Hell
Arash Rafiey
Anders Yeo
|
|
+
PDF
Chat
|
Near-Unanimity Functions and Varieties of Reflexive Graphs
|
2008
|
Richard C. Brewster
Tomás Feder
Pavol Hell
Jing Huang
Gary MacGillivray
|
|
+
|
Brooks-Type Theorems for Pair-List Colorings and List Homomorphisms
|
2008
|
Tomás Feder
Pavol Hell
Jing Huang
|
|
+
|
On the Density of Trigraph Homomorphisms
|
2007
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
Minimum Cost Homomorphisms to Reflexive Digraphs
|
2007
|
Arvind Gupta
Pavol Hell
Mohammad M. Karimi
Arash Rafiey
|
|
+
|
List homomorphisms of graphs with bounded degrees
|
2006
|
Tomás Feder
Pavol Hell
Jing Huang
|
|
+
|
None
|
2006
|
David Hartvigsen
Pavol Hell
Jácint Szabó
|
|
+
|
Minimum Cost Homomorphisms to Proper Interval Graphs and Bigraphs
|
2006
|
Gregory Gutin
Pavol Hell
Arash Rafiey
Anders Yeo
|
|
+
|
THE PARTIAL ORDER OF GRAPHS AND HOMOMORPHISMS
|
2004
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
COLOURING—VARIATIONS ON A THEME
|
2004
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
Polychromatic cliques
|
2004
|
Pavol Hell
Juan José Montellano‐Ballesteros
|
|
+
PDF
Chat
|
Interval bigraphs and circular arc graphs
|
2004
|
Pavol Hell
Jing Huang
|
|
+
|
Certifying LexBFS Recognition Algorithms for Proper Interval Graphs and Proper Interval Bigraphs
|
2004
|
Pavol Hell
Jing Huang
|
|
+
PDF
Chat
|
Partitioning chordal graphs into independent sets and cliques
|
2003
|
Pavol Hell
Sulamita Klein
Loana Tito Nogueira
Fábio Protti
|
|
+
|
Bi‐arc graphs and the complexity of list homomorphisms
|
2002
|
Tomás Feder
Pavol Hell
Jing Huang
|
|
+
|
Particionamento de Grafos Cordais em Conjuntos Independentes e Cliques
|
2002
|
Pavol Hell
Sulamita Klein
Loana Tito Nogueira
Fábio Protti
|
|
+
|
Homomorphisms to powers of digraphs
|
2002
|
Richard C. Brewster
Pavol Hell
|
|
+
|
High-Girth Graphs Avoiding a Minor are Nearly Bipartite
|
2001
|
Anna Galluccio
Luis Goddyn
Pavol Hell
|
|
+
|
On generalized split graphs
|
2001
|
Pavol Hell
Sulamita Klein
Fábio Protti
Loana Tito
|
|
+
|
On homomorphisms to edge-coloured cycles
|
2000
|
Richard C. Brewster
Pavol Hell
|
|
+
|
The complexity of H-colouring of bounded degree graphs
|
2000
|
Anna Galluccio
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
Three-and-more set theorems
|
2000
|
Pavol Hell
J. Neÿsetÿ
André Raspaud
Éric Sopena
|
|
+
|
List Homomorphisms and Circular Arc Graphs
|
1999
|
Tomás Feder
Pavol Hell
Jing Huang
|
|
+
|
Complexity of tree homomorphisms
|
1996
|
Pavol Hell
Jaroslav Nešetřil
Xuding Zhu
|
|
+
PDF
Chat
|
Duality and Polynomial Testing of Tree Homomorphisms
|
1996
|
Pavol Hell
Jaroslav Nešetřil
Xuding Zhu
|
|
+
|
On homomorphisms to acyclic local tournaments
|
1995
|
Pavol Hell
Huishan Zhou
Xuding Zhu
|
|
+
|
Large planar graphs with given diameter and maximum degree
|
1995
|
Michael R. Fellows
Pavol Hell
Karen Seyffarth
|
|
+
|
On the ultimate independence ratio of a graph
|
1995
|
Geňa Hahn
Pavol Hell
Svatopluk Poljak
|
|
+
|
The Existence of Homomorphisms to Oriented Cycles
|
1995
|
Pavol Hell
Xuding Zhu
|
|
+
|
Hereditarily hard H-colouring problems
|
1995
|
Jørgen Bang‐Jensen
Pavol Hell
Gary MacGillivray
|
|
+
|
Equicovering matroids by distinct bases
|
1995
|
Pierre Fraisse
Pavol Hell
|
|
+
|
Homomorphisms to oriented paths
|
1994
|
Pavol Hell
Xuding Zhu
|
|
+
|
Packing problems in edge-colored graphs
|
1994
|
Pavol Hell
Yannis Manoussakis
Zs. Tuza
|
|
+
|
Multiplicativity of Oriented Cycles
|
1994
|
Pavol Hell
Huishan Zhou
Xuding Zhu
|
|
+
|
Independence ratios of graph powers
|
1994
|
Pavol Hell
Xingxing Yu
Huishan Zhou
|
|
+
|
Absolute reflexive retracts and absolute bipartite retracts
|
1993
|
Hans‐Jürgen Bandelt
Martin Farber
Pavol Hell
|
|
+
|
Algorithms for Degree Constrained Graph Factors of Minimum Deficiency
|
1993
|
Pavol Hell
David Kirkpatrick
|
|
+
|
On the complexity of colouring by superdigraphs of bipartite graphs
|
1992
|
Jørgen Bang‐Jensen
Pavol Hell
Gary MacGillivray
|
|
+
|
Images of Rigid Digraphs
|
1991
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
A simple existence criterion for (g < f)- factors
|
1990
|
Katherine Heinrich
Pavol Hell
David Kirkpatrick
Guizhen Liu
|
|
+
|
On the complexity of H-coloring
|
1990
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
|
Local tournaments and proper circular arc graphs
|
1990
|
Pavol Hell
Jørgen Bang‐Jensen
Jing Huang
|
|
+
|
The effect of two cycles on the complexity of colourings by directed graphs
|
1990
|
Jørgen Bang‐Jensen
Pavol Hell
|
|
+
|
The Complexity of Colouring by Semicomplete Digraphs
|
1988
|
Jørgen Bang‐Jensen
Pavol Hell
Gary MacGillivray
|
|
+
PDF
Chat
|
On multiplicative graphs and the product conjecture
|
1988
|
Roland Häggkvist
Pavol Hell
Donald J. Miller
Víctor Neumann Lara
|
|
+
|
The Existence Problem for Graph Homomorphisms
|
1988
|
Pavol Hell
Jaroslav Nešetřil
|
|
+
PDF
Chat
|
Bandwidth versus Bandsize
|
1988
|
Péter L. Erdős
Pavol Hell
Peter Winkler
|
|
+
|
Packings by Complete Bipartite Graphs
|
1986
|
Pavol Hell
David Kirkpatrick
|
|
+
|
Matroids With Weighted Bases and Feynman Integrals
|
1984
|
Pavol Hell
Eugène R. Speer
|
|
+
|
On the Complexity of General Graph Factor Problems
|
1983
|
David Kirkpatrick
Pavol Hell
|
|
+
|
Counterexamples to theorems of Menger type for the diameter
|
1983
|
J. A. Bondy
Pavol Hell
|
|
+
|
Homomorphism Interpolation and Approximation
|
1982
|
Zdeněk Hedrlín
Pavol Hell
Chun-Wa Ko
|
|
+
|
Analogues of the Shannon Capacity of a Graph
|
1982
|
Pavol Hell
Fred S. Roberts
|
|
+
|
GRAPHS WITH FORBIDDEN HOMOMORPHIC IMAGES
|
1979
|
Pavol Hell
Donald J. Miller
|
|
+
|
An intermediate value theorem for graphs with given automorphism group
|
1979
|
Pavol Hell
Louis V. Quintas
|
|
+
|
Homomorphisms of graphs and of their orientations
|
1978
|
Pavol Hell
Jaroslav Ne et il
|
|
+
|
On the Density of Sets Containing No <i>k</i> -Element Arithmetic Progression of a Certain Kind
|
1976
|
Brian Alspach
Tom C. Brown
Pavol Hell
|
|
+
PDF
Chat
|
<i>Corrections</i> : Generalized Ramsey Theory for Graphs V
|
1975
|
Frank Harary
Pavol Hell
|
|
+
|
Some results on the Oberwolfach problem
|
1975
|
Pavol Hell
Anton Kotzig
Alexander Rosa
|
|
+
|
Generalized Ramsey Theory for Graphs V. the Ramsey Number of a Digraph
|
1974
|
Frank Harary
Pavol Hell
|
|
+
|
Some results on the Oberwolfach problem
|
1974
|
Pavol Hell
Anton Kotzig
Alexander Rosa
|
|
+
|
Absolute retracts in graphs
|
1974
|
Pavol Hell
|
|
+
|
Full embeddings into some categories of graphs
|
1972
|
Pavol Hell
|