Improved inclusion-exclusion identities via closure operators
Let (A_v)_v ∈ V be a finite family of sets. We establish an improved inclusion-exclusion identity for each closure operator on the power set of V having the unique base property. The result generalizes three improvements of the inclusion-exclusion principle as well as Whitney's broken circuit t...
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| Format: | Article |
| Language: | English |
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Discrete Mathematics & Theoretical Computer Science
2000-01-01
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| Series: | Discrete Mathematics & Theoretical Computer Science |
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| Online Access: | https://dmtcs.episciences.org/275/pdf |