CAUCHY: Jurnal Matematika Murni dan Aplikasi
Vol 11, No 1 (2026): CAUCHY: JURNAL MATEMATIKA MURNI DAN APLIKASI

Properties of Clear Graph of Ring ℤp

Mohammad Ilham Maulana (University of Brawijaya)
Vira Hari Krisnawati (University of Brawijaya)
Ratno Bagus Edy Wibowo (University of Brawijaya)



Article Info

Publish Date
30 May 2026

Abstract

Let ℤp be the ring of integers modulo a prime p 3. The clear graph of ℤp, denoted by Cr2(ℤp), is a graph whose vertices are ordered pairs (x,u), where x is a nonzero regular unit and u is a unit of ℤp, and two vertices (x,u) and (y,v) are adjacent if either xy = yx = 0 or uv = vu = 1. This work extends previous research on clear graphs, which established the basic structure of Cr2(R) for certain rings, including aspects of isomorphism, connectedness, and other structural properties. In this paper, we focus on the prime ring ℤp and analyze several fundamental graph-theoretic properties of Cr2(ℤp). Specifically, we show that this graph has order (p−1)2, size ½(p2−2p−1)(p−1), diameter ∞, radius at most 2, independence number ½(p2−4p+7), and clique, chromatic, and domination numbers each equal to p−1. The results provide a deeper understanding of how algebraic properties of ℤp influence the combinatorial structure of its associated clear graph.

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Journal Info

Abbrev

Math

Publisher

Subject

Mathematics

Description

Jurnal CAUCHY secara berkala terbit dua (2) kali dalam setahun. Redaksi menerima tulisan ilmiah hasil penelitian, kajian kepustakaan, analisis dan pemecahan permasalahan di bidang Matematika (Aljabar, Analisis, Statistika, Komputasi, dan Terapan). Naskah yang diterima akan dikilas (review) oleh ...