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- Title
NON-PARALLEL GRAPH OF SUBMODULES OF A MODULE.
- Authors
SHIRALI, NASRIN; SHIRALI, MARYAM
- Abstract
A non-parallel submodules graph of M, denoted by G ∦ (M), is an undirected simple graph whose vertices are in one-to-one correspondence with all non-zero proper submodules of M and two distinct vertices are adjacent if and only if they are not parallel to each other. In this paper, we investigate the interplay between some of the module-theoretic properties of M and the graph-theoretic properties of G ∦ (M). It is shown that if G ∦ (M) is connected, then diam(G ∦ (M)) ≤ 3 and if G ∦ (M) is not connected, then G ∦ (M) is a null graph. It is proved that G ∦ (M) is null if and only if M contains a unique simple submodule. In particular, M is a strongly semisimple R -module if and only if G ∦ (M) is a complete graph, and from this it follows that if G ∦ (M) is complete, then every R-module with finite Goldie dimension is Artinian and Noetherian. In addition, G ∦ (M) is a finite star graph if and only if M∼= Zpq, for some distinct prime numbers p and q.
- Subjects
MATHEMATICS; GRAPHIC methods; MATHEMATICS theorems; PRIME numbers; INTEGERS
- Publication
Journal of Advanced Mathematical Modeling (JAMM), 2024, Vol 13, Issue 5, p108
- ISSN
2251-8088
- Publication type
Article
- DOI
10.22055/JAMM.2024.45266.2225