"On Preservation under Homomorphisms and Unions of Conjunctive Queries."

Albert Atserias, Anuj Dawar, Phokion G. Kolaitis (2004)

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DOI: 10.1145/1055558.1055602

access: closed

type: Conference or Workshop Paper

metadata version: 2018-11-14

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  - https://dblp.org/rec/conf/pods/AtseriasDK04
Albert Atserias, Anuj Dawar, Phokion G. Kolaitis:
On Preservation under Homomorphisms and Unions of Conjunctive Queries. PODS 2004: 319-329

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