Publikationen des Lehrstuhl II für Mathematik

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Publications 2018
Lower bounds on the signed (total) k-domination number depending on the clique number  
Lutz Volkmann
Communications in Combinatorics and Optimization 3 (2018), 173--178.
Signed total Roman k-domination in graphs  
Lutz Volkmann
J. Combin. Math. Combin. Comput. 105 (2018), 105--116.
The double Roman domatic number of a graph  
Lutz Volkmann
J. Combin. Math. Combin. Comput. 104 (2018), 205--215.
 
Publications 2017
Maximal Roman domination numbers in graphs  
H.A. Ahangar, A. Bahremandpour, S.M. Sheikholeslami, N.D. Soner, Z. Tahmasbzadehbaee, Lutz Volkmann
Util. Math. 103 (2017), 245--258.
The k-rainbow reinforcement numbers in graphs  
J. Amjadi, L. Asgharsharghi, N. Dehgardi, M. Furuya, S.M. Sheikholeslami, Lutz Volkmann
Discrete Appl. Math. 217 (2017), 394--404.
Total Roman domination number of trees  
J. Amjadi, S. Nazari-Moghaddam, S.M. Sheikholeslami, Lutz Volkmann
Australas. J. Combin 69 (2017), 271--285.
Signed Roman edge k-domination in graphs  
L. Asgharsharghi, S.M. Sheikholeslami, Lutz Volkmann
Discuss. Math. Graph Theory 37 (2017), 39--53.
An introduction to the twin signed total k-domination number in directed graphs  
M. Atapour, N. Dehgardi, Lutz Volkmann
RAIRO -- Operations Research 51 (2017), 1331--1343.
Twin signed domination numbers in directed graphs  
M. Atapour, S. Norouzian, S.M. Sheikholeslami, Lutz Volkmann
Algebra Discrete Math. 24 (2017), 71--89.
Roman game domination number of a graph  
A. Bahremandpour, S.M. Sheikholeslami, Lutz Volkmann
J. Comb. Optim. 33 (2017), 713--725.
Perfect f-Matchings and f-Factors in Hypergraphs - A Combinatorial Approach  
Isabel Beckenbach, Robert Scheidweiler
Discrete Mathematics 340 (2017), no. 10, 2499--2506.
Reference points and approximation algorithms in multicriteria discrete optimization  
Christina Büsing, Kai-Simon Goetzmann, Jannik Matuschke, Sebastian Stiller
European Journal of Operational Research 260 (2017), no. 3, 829--840.
Robust spectrum allocation in elastic flexgrid optical networks: Complexity and formulations  
Christina Büsing, Alexandra Grub, Arie M.C.A. Koster, Waldemar Laube, Martin Tieves
Networks 70 (2017), no. 4, 342--359.
The budgeted minimum cost flow problem with unit upgrading cost  
Christina Büsing, Arie M.C.A. Koster, Sarah Kirchner, Annika Thome
Networks 69 (2017), 67-82.
Sufficient conditions on the zeroth-order general Randic index for maximally edge-connected graphs  
Zhibing Chen, Guifu Su, Lutz Volkmann
Discrete Appl. Math. 218 (2017), 64--70.
Universal arcs in local tournaments  
Jia Guo, Yubao Guo, Mei Lu, Wei Meng, Lutz Volkmann
Discrete Math. 340 (2017), 2900--2915.
Robust and sustainable supply chains under market uncertainties and different risk attitudes-A case study of the German biodiesel market  
Laura Elisabeth Hombach, Christina Büsing, G. Walther
European Journal of Operational Research (2017)
Improved Handling of Uncertainty and Robustness in Set Covering Problems  
Pascal Lutter, Dirk Degel, Christina Büsing, Arie M.C.A. Koster, Brigitte Werners
European Journal of Operational Research 263 (2017), 35-49.
On the signed 2-independence number of graphs  
Seyyed Mehdi Hosseini Moghaddam, Doost Ali Mojdeh, Babak Samadi, Lutz Volkmann
Electron J. Graph Theory Appl. 5 (2017), 36--42.
Ganzzahlige Optimierungsmethoden für die operative Planung von Erhaltungsmaßnahmen im Straßenbau  
Isabelle Schmidt, Hendrik Schaap, Robert Scheidweiler
Heureka 2017 (to appear) (2017)

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