Volume 89, (2012)

Research Article

Minimal energy trees of given bipartition and diameter

Liu, Zhongzhu; Zhou, Bo

Util. Math. 89, 3-13 (2012).

Research Article

Existence of optimal restricted strong partially balanced designs

Liang, Miao; Du, Beiliang

Util. Math. 89, 15-31 (2012).

Research Article

Hamiltonicity in directed Toeplitz graphs of maximum (out or in) degree 4

Malik, Shabnam

Util. Math. 89, 33-68 (2012).

Research Article

On vertex irregular total labelings of convex polytope graphs

Ahmad, Ali

Util. Math. 89, 69-78 (2012).

Research Article

Changing and unchanging the roman domination number of graph

Jafari Rad, Nader; Volkmann, Lutz

Util. Math. 89, 79-95 (2012).

Research Article

On determinants and permanents of k-tridiagonal Toeplitz matrices

Aşci, Mustafa; Taşci, Dursun; El-Mikkawy, Moawwad

Util. Math. 89, 97-106 (2012).

Research Article

BBP-type formulae modulo 5

Zhang, Wenlong; Song, He-Shan

Util. Math. 89, 107-112 (2012).

Research Article

Bell polynomials for sums and products with applications to derivatives of functions of trigonometric and hyperbolic functions

Withers, Christopher S.; Nadarajah, Saralees

Util. Math. 89, 113-127 (2012).

Research Article

A characterization for a sequence to be potentially \({K_{r+1}−E(P2),K−2r+1}\)-graphic

Wang, Ye; Yin, Jian-Hua

Util. Math. 89, 129-139 (2012).

Research Article

Connected domination: vertex criticality and matchings

Ananchuen, W.; Ananchuen, N.; Plummer, M. D.

Util. Math. 89, 141-159 (2012).

Research Article

The Laplacian spectral radius of a class of bipartite graphs

Tan, Xuezhong; Liu, Bolian

Util. Math. 89, 161-167 (2012).

Research Article

On super edge-magic total labeling on subdivision of trees

Javaid, M.; Hussain, M.; Ali, K.; Shaker, H.

Util. Math. 89, 169-177 (2012).

Research Article

The multiplication formulas for the Apostol-Genocchi polynomials

Luo, Qiu-Ming

Util. Math. 89, 179-191 (2012).

Research Article

On fractional \((k,m)\)-deleted graphs

Zhou, Sizhong

Util. Math. 89, 193-201 (2012).

Research Article

Some results on \((g,f)\)-uniform graphs

Cai, Jiansheng; Ge, Liansheng

Util. Math. 89, 203-210 (2012).

Research Article

Graphs such that all minimum dominating sets intersect all maximally independent sets

Johnson, Peter D. jun.; Prier, D. R.

Util. Math. 89, 211-224 (2012).

Research Article

Multiplication modules and principal elements of modules over noncommutative rings

Sevim, Esra Sengelen

Util. Math. 89, 225-235 (2012).

Research Article

Some optimal codes and strongly regular graphs from the linear group \(L_{4}(3)\)

Crnković, Dean; Mikulić Crnković, Vedrana; Rodrigues, B. G.

Util. Math. 89, 237-255 (2012).

Research Article

Hall numbers of some complete k-partite graphs

Allagan, Julian A.

Util. Math. 89, 257-267 (2012).

Research Article

On longest paths in triangular lattice graphs

Dino Jumani, Ali; Zamfirescu, Tudor

Util. Math. 89, 269-273 (2012).

Research Article

Necessary conditions on graceful labels: a study case on trees and other examples

Vietri, Andrea

Util. Math. 89, 275-287 (2012).

Research Article

Centralizer of braids and Fibonacci numbers

Ali, Usman; Haider, Azeem

Util. Math. 89, 289-296 (2012).

Research Article

The Hankel transform of generalized Bell numbers and its q-analogue

Corcino, Roberto B.; Corcino, Cristina B.

Util. Math. 89, 297-309 (2012).

Research Article

On the gracefulness of the digraphs \(n−C_{21}\)

Jinsiqintuya; Jirimutu

Util. Math. 89, 311-318 (2012).

Research Article

Merrifield-Simmons index of a class of unicyclic graphs

Chen, Shubo; Liu, Weijun

Util. Math. 89, 319-329 (2012).

Research Article

On the nonplanarity of powers of paths

Chartrand, Gary; Fujie, Futaba; Zhang, Ping

Util. Math. 89, 331-341 (2012).

Research Article

The first six quasi-trees with greatest Randić index

Bao, Qi; Lu, Mei

Util. Math. 89, 343-356 (2012).

Research Article

Some \(C_{3}\)-supermagic graphs

Jeyanthi, P.; Selvagopal, P.; Sundaram, S. Soma

Util. Math. 89, 357-366 (2012).

Research Article

The set of fuzzy points of coalgebras

Chen, Wenjuan; Guan, Yanyong

Util. Math. 89, 367-371 (2012).

Research Article

On super edge-magicness of graphs

Ahmad, Ali; Baig, A. Q.; Imran, Muhammad

Util. Math. 89, 373-380 (2012).

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Call for papers

Special issue: Dynamical systems and differential equations in applied sciences
Guest editors: Renhai Wang, Mirelson Martins Freitas, Nguyen Huy Tuan
Submission deadline: 03 January 2026

Special Issues

The Combinatorial Press Editorial Office routinely extends invitations to scholars for the guest editing of Special Issues, focusing on topics of interest to the scientific community.