Images of rigid digraphs (Q751667)
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scientific article; zbMATH DE number 4177089
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Images of rigid digraphs |
scientific article; zbMATH DE number 4177089 |
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Images of rigid digraphs (English)
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1991
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A graph G is rigid if the only homomorphism \(G\to G\) is the identity. The authors characterize finite digraphs that are homomorphic images of rigid graphs and they obtain some partial results in the infinite case.
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rigid digraphs
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well-quasi-ordered sets
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homomorphism
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