Open Access
Research Article·pp. 2097–2125·Vol. 26, Issue 8Dec 2023
L(1, d)-labeling number of direct product of two cycles
Qiong Wu, Wai Chee Shiu
Published Online: 24 May 2022DOI: 10.1080/09720529.2021.1930652
In this paper: For positive number d, an L(1, d) -labeling f of G is an assignment of numbers to vertices of G such that |f(u) - f(v)| ≥ 1 if d(u, v) = 1, and |f(u) - f(v)| ≥ d if d(u, v) = 2. Then the span of f is...
