[1, k]-Domination Number of Lexicographic Products of Graphs
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DOI: 10.1007/s40840-020-00957-0
Abstract: A subset D of the vertex set V ( G ) of a graph G is called a [1, k ]-dominating set if every vertex from $$V-D$$ V - D is adjacent to at least… read more here.
Keywords: domination number; number lexicographic; number; products graphs ... See more keywords
Lexicographic products as compact spaces of the first Baire class
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DOI: 10.1016/j.topol.2019.106871
Abstract: We use lexicographic products to give examples of compact spaces of first Baire class functions on a compact metric space that cannot be represented as spaces of functions with countably many discontinuities. read more here.
Keywords: compact spaces; baire class; first baire; spaces first ... See more keywords
The weight of lexicographic products
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DOI: 10.1016/j.topol.2020.107357
Abstract: Abstract We will calculate the weight of lexicographic products of GO-spaces, using this we will see: • the assertion that the weight of the lexicographic product 2 ω 1 is ℵ 1 is equivalent to… read more here.
Keywords: assertion; weight lexicographic; product; topology ... See more keywords