Volume 115, (2020)

Research Article

A study of ultraspherical matrix polynomials of two variables

Metwally, M. S.; Shehata, S.

Util. Math. 115, 3-21 (2020).

Research Article

Complete symmetric functions in several variables and \(k\) Fibonacci numbers

Boussayoud, Ali; Boughaba, Souhila; Araci, Serkan

Util. Math. 115, 23-37 (2020).

Research Article

Number of spanning trees in the sequence of some nonahedral graphs

Daoud, S. N.

Util. Math. 115, 39-56 (2020).

Research Article

A simple combinatorial treatment for the \(q\)-series interpreted by Agarwal

Sharma, S.; Rana, M.

Util. Math. 115, 57-72 (2020).

Research Article

The existence of fractional \((g,f)\)-factors in networks

Sun, Zhiren; Zhou, Sizhong

Util. Math. 115, 73-88 (2020).

Research Article

Odd harmonious labeling of step ladder graphs

Jeyanthi, P.; Philo, S.

Util. Math. 115, 89-103 (2020).

Research Article

Total dominator coloring of circulant graphs \(C_{n}(a,b)\)

Jalilolghadr, Parvin; Kazemi, Adel P.; Khodkar, Abdollah

Util. Math. 115, 105-117 (2020).

Research Article

Further studies on ordered \((∗,\Gamma)\)-semigroups

Feng, Xinyang; Tang, Jian; Luo, Yanfeng

Util. Math. 115, 119-128 (2020).

Research Article

On the existence of specified cycles in bipartite tournaments

Zhang, Bo; Yang, Weihua

Util. Math. 115, 129-142 (2020).

Research Article

Fault-tolerant edge-pancyclicity of locally twisted cubes \(LTQ_{n}\)

Xu, Xirong; Zhang, Huifeng; Lingqi, Zhao; Zhang, Zhe; Yang, Yuansheng

Util. Math. 115, 143-158 (2020).

Research Article

Enumeration of rooted biloopless planar maps

Long, Shude; Cai, Junliang

Util. Math. 115, 159-170 (2020).

Research Article

A note on constructing small rotatable designs under first order response surface interference model

Varghese, Eldho; Kumar, Jitendra; Jaggi, Seema; Varghese, Cini; Bhowmik, Arpan

Util. Math. 115, 171-180 (2020).

Research Article

Degree diameter problem on silicate network

Akhtar, Muhammad Shahzad; Bokhary, Syed Ahtsham Ul Haq

Util. Math. 115, 181-197 (2020).

Research Article

On the Zagreb and Wiener polarity indices of \(C_{3}\)-free chemical nanostructures

Arockiaraja, Micheal; Liu, Jia-Bao; Prabhu, S.; Arulperumjothi, M.

Util. Math. 115, 199-218 (2020).

Research Article

The Hyper-Zagreb index and \(F\)-index of five kinds of graphs

Lu, Peng; Guo, XuDong

Util. Math. 115, 219-225 (2020).

Research Article

Decompositions of \(\lambda\)-fold complete bipartite 3-uniform hypergraphs \(\lambda K^{(3)}_{n,n}\) into hypergraph \(K^{(3)}_{4}−e\)

Zhao, Hongtao; Zhang, Qingyun

Util. Math. 115, 227-237 (2020).

Research Article

Star domination and star irredundance in graphs

Ramalingam, N.; Karthikeyan, S.; Swaminathan, V.; Prabhu, S.

Util. Math. 115, 239-249 (2020).

Research Article

On distance magic Harary graphs

Prajeesh, A. V.; Paramasivam, K.; Kathiresan, K. M.

Util. Math. 115, 251-266 (2020).

Research Article

A note on the eccentric connectivity index of graphs of given diameter

du Toit, Lindie; Mukwembi, Simon; Vetrík, Tomás

Util. Math. 115, 267-274 (2020).

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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.