A Result on Fractional (a, b, k)-critical Covered Graphs
نویسندگان
چکیده
A fractional [a, b]-factor of a graph G is function h from E(G) to [0, 1] satisfying \(a \le d_G^h(v) b\) for every vertex v G, where \(d_G^h(v) = \sum\limits_{e \in E(v)} {h(e)} \) and E(v) {e uv : u ? V (G)}. called b]-covered if contains with h(e) 1 any edge e G. (a, b, k)-critical covered — Q ? V(G) ?Q? k. In this article, we demonstrate neighborhood condition be covered. Furthermore, claim that the result sharp.
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ژورنال
عنوان ژورنال: Acta Mathematicae Applicatae Sinica
سال: 2021
ISSN: ['0168-9673', '1618-3932']
DOI: https://doi.org/10.1007/s10255-021-1034-8