Complementary Distance and Reciprocal Complementary Distance Spectrum for Indu-Bala Product of Graphs

Authors

  • Harishchandra S. Ramane Department of Mathematics, Karnatak University, Dharwad-580003, India
  • Daneshwari D. Patil Department of Mathematics, Sha. Sogamal Peeraju Oswal Government First Grade College, Muddebihal-586212, India

DOI:

https://doi.org/10.5644/SJM.21.01.03

Keywords:

Join of two graphs, Indu-Bala product, $\mathcal{CD}$-spectrum, $\mathcal{RCD}$-spectrum

Abstract

For two graphs $G_1$ and $G_2$, graph obtained with two disjoint copies of join structure $G_1 \vee G_2$ by joining the corresponding vertices in $G_2$'s, is the Indu--Bala product $G_1 \blacktriangledown G_2$. Present work focuses on the study of complementary distance ($\mathcal{CD}$) and reciprocal complementary distance ($\mathcal{RCD}$) spectrum for Indu--Bala product of regular graphs via the concept of equitable partition. Hence note $\mathcal{CD}$ and $\mathcal{RCD}$ spectrum of dumbbell graph as a particular case of the Indu--Bala product.

 

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References

F. Buckley and F. Harary, On the Euclidean dimension of a wheel, Graphs Combin., 4 (1988), 23--30.

P. J. Davis, Circulant Matrices, Wiley, New York, 1979.

F. Harary, Graph Theory, Narosa Publishing House, New Delhi, 1998.

G. Indulal and R. Balakrishnan, Distance spectrum of Indu–Bala product of graphs, AKCE Int. J. Graphs Comb., 13 (3) (2016) 230--234.

O. Ivanciuc, T. Ivanciuc and A. T. Balban, The complementary distance matrix, a new molecular graph metric, ACH-Models Chem., 137 (2000), 57--82.

D. Janežić, S. Nikolić, A. Milićević and N. Trinajstić, Graph theoretical matrices in chemistry, University of Kragujevac, Serbia, 2007.

S. Kaliyaperumal and K. Desikan, D--Spectrum of Hyper--Dumbbell graph, preprint(2022). https://doi.org/10.21203/rs.3.rs-1763398/v1.

S. Patil and M. Mathapati, Spectra of Indu-Bala product of graphs and some new pairs of cospectral graphs, Discrete Math. Algorithms Appl., 11 (5) (2019), # 1950056.

H. S. Ramane and G. A. Gudodagi, Reciprocal complementary distance equienergetic graphs, Asian European J. Math., 9 (2016), 1650084.

H. S. Ramane and M. M. Gundloor, On the complementary distance energy of join of certain graphs, Discrete Math. Lett., 2 (2019), 57--64.

H. S. Ramane and D. D. Patil, Complementary distance polynomial and energy of join of two graphs, Ann. Math. Comput. Sci., 12 (2023), 46--51.

H. S. Ramane and D. D. Patil, Reciprocal complementary distance polynomial and energy of join of two graphs, J. Adv. Math. Stud., 16 (3) (2023), 335--341.

A. J. Schwenk, Computing the characteristic polynomial of a graph, Lecture Notes in Math., 406 (1974), 153--172.

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Published

05.09.2025

How to Cite

Ramane, H. S., & Patil, D. D. (2025). Complementary Distance and Reciprocal Complementary Distance Spectrum for Indu-Bala Product of Graphs. Sarajevo Journal of Mathematics, 21(1), 21–28. https://doi.org/10.5644/SJM.21.01.03

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