Cores and Compactness of Infinite Direct
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Bruce L. Bauslaugh
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Article
📅
1996
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Elsevier Science
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English
⚖ 665 KB
In this paper we define the property of homomorphic compactness for digraphs. We prove that if a digraph H is homomorphically compact then H has a core, although the converse does not hold. We also examine a weakened compactness condition and show that when this condition is assumed, compactness is