References
- M. Afkhami and K. Khashyarmanesh, The comaximal graph of a lattice, Bull. Malays. Math. Sci. Soc., 37(2014), 261-269.
- J. A. Bondy and U. S. R. Murty, Graph theory with applications, American Elsevier, New York, 1976.
- A. Bouchet, Orientable and nonorientable genus of the complete bipartite graph, J. Combin. Theory Ser. B, 24(1978), 24-33.
- A. L. Hlavacek, 9-vertex irreducible graphs for the torus, PhD. thesis, University of Ohio State, 1997.
- H. R. Maimani, M. Salimi, A. Sattari and S. Yassemi, Comaximal graph of commu-tative rings, J. Algebra, 319(2008), 1801-1808. https://doi.org/10.1016/j.jalgebra.2007.02.003
- W. Massey, Algebraic topology: an introduction, Harcourt, Brace & World, New York, 1967.
- J. B. Nation, Notes on lattice theory, Cambridge studies in advanced mathematics 60, Cambridge University Press, Cambridge, 1998.
- G. Ringel, Map color theorem, Springer-Verlag, New York/Heidelberg, 1974.
- P. K. Sharma and S. M. Bhatwadekar, A note on graphical representation of rings, J. Algebra, 176(1995), 124-127.
- H. J. Wang, Graphs associated to co-maximal ideals of commutative rings, J. Algebra, 320(2008), 2917-2933. https://doi.org/10.1016/j.jalgebra.2008.06.020
- H. J. Wang, Co-maximal graph of non-commutative rings, Linear Algebra Appl., 430(2009), 633-641.
- D. Zeps, Forbidden minors for projective plane are free-toroidal or non-toroidal, IUUK-CE-ITI series, 2009.