On (Semi, Pre, Semi-pre, b)-open subgraph
Aiad I. Awad, Taha Hameed Jasim · Muthanna Journal of Pure Science · 2020
Due it difficult to find applications in topological spaces, which are branches of pure mathematics. The importance of this paper is to find applications in graph theory. So, We Introduced (semi, pre, b, semi-pre)-open subgraph to graph theory. The relations among them were studied. At least many theorems were proofed as a characterization and some examples introduced to explain the subject.