Publikationen von Volkmann

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Publications 2023
Total restrained Roman domination  
J. Amjadi, Babak Samadi, Lutz Volkmann
Communications in Combinatorics and Optimization 8 (2023), 575--587.
Independent Italian bondage of graphs  
S. Kosari, J. Amjadi, Aysha Khan, Lutz Volkmann
Communications in Combinatorics and Optimization 8 (2023), 649-664.
Outer-independent total 2-rainbow dominating functions in graphs  
A. Mahmoodi, Lutz Volkmann
Communications in Combinatorics and Optimization 8 (2023), 431--444.
Restrained double Italian domination in graphs  
Lutz Volkmann
Communications in Combinatorics and Optimization 8 (2023), 1--11.
Signed total Italian k-domatic number of a graph  
Lutz Volkmann
Communications in Combinatorics and Optimization 8 (2023), 39-52.
 
Publications 2022
The Roman domatic problem in graphs and digraphs: A survey  
Mustapha Chellali, N. Jafari Rad, S.M. Sheikholeslami, Lutz Volkmann
Discuss. Math. Graph Theory 42 (2022), 861--891.
Disprove of a conjecture on the doubly connected domination subdivision number  
S. Kosari, Zehui Shao, S.M. Sheikholeslami, H. Karami, Lutz Volkmann
Bull. Iranian Math. Soc. 48 (2022), 1351--1355.
Restrained double Roman domination of a graph  
Doost Ali Mojdeh, Iman Masoumi, Lutz Volkmann
RAIRO -- Operations Research 56 (2022), 2293--2304.
Nordhaus-Gaddum type inequalities on the total Italian domination number in graphs  
S.M. Sheikholeslami, Lutz Volkmann
RAIRO -- Operations Research 56 (2022), 2235-2243.
Restrained Roman and restrained Italian domatic numbers of graphs  
Lutz Volkmann
Discrete Applied Mathematics 322 (2022), 153--159.
Weak signed Roman k-domatic number of a graph  
Lutz Volkmann
Communications in Combinatorics and Optimization 7 (2022), 17--27.
 
Publications 2021
Total vertex-edge domination in trees  
H.A. Ahangar, Mustapha Chellali, S.M. Sheikholeslami, Marzieh Soroudi, Lutz Volkmann
Acta Math. Univ. Comenianae 90 (2021), 127--143.
Domination number, Independent domination number and 2-independence number in trees  
Hamideh Aram, N. Dehgardi, S.M. Sheikholeslami, Mina Valinavaz, Lutz Volkmann
Discuss. Math. Graph Theory 41 (2021), 39--49.
Bounds on the outer-independent double Italian domination number  
F. Azvin, N. Jafari Rad, Lutz Volkmann
Communications in Combinatorics and Optimization 6 (2021), no. 1, 123--136.
Oriented diameter of maximal outerplanar graphs  
Yaojun Chen, Peter Dankelmann, Yubao Guo, M. Surmacs, Lutz Volkmann, Xiaolin Wang
J. Graph Theory 98 (2021), 426--444.
Nordhaus-Gaddum type results for connected and total domination  
R. Khoeilar, H. Karami, Mustapha Chellali, S.M. Sheikholeslami, Lutz Volkmann
RAIRO -- Operations Research 55 (2021), S853--S862.
An upper bound on the double Roman domination number  
Lyes Ouldrabah, Lutz Volkmann
Bull. Iranian Math. Soc. 47 (2021), 1315--1323.
Remarks on the outer-independent double Italian domination number  
Lutz Volkmann
Opuscula Math. 41 (2021), 259--268.
Signed total Italian k-domination in graphs  
Lutz Volkmann
Communications in Combinatorics and Optimization 6 (2021), 171--183.
Weak signed Roman domination in digraphs  
Lutz Volkmann
Tamkang J. Math. 52 (2021), 497--508.

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