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  A Note on Assumptions about Skolem Functions

Ohlbach, H. J., & Weidenbach, C. (1995). A Note on Assumptions about Skolem Functions. Journal of Automated Reasoning, 15(2), 267-275.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-ACE7-E Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-ACE8-C
Genre: Journal Article

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 Creators:
Ohlbach, Hans Jürgen1, Author           
Weidenbach, Christoph1, 2, Author           
Affiliations:
1Programming Logics, MPI for Informatics, Max Planck Society, ou_40045              
2Automation of Logic, MPI for Informatics, Max Planck Society, ou_1116545              

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 Abstract: Skolemization is not an equivalence preserving transformation. For the purposes of refutational theorem proving it is sufficient that Skolemization preserves satisfiability and unsatisfiability. Therefore there is sometimes some freedom in interpreting Skolem functions in a particular way. We show that in certain cases it is possible to exploit this freedom for simplifying formulae considerably. Examples for cases where this occurs systematically are the relational translation from modal logics to predicate logic and the relativization of first-order logics with sorts.

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Language(s): eng - English
 Dates: 2010-03-121995
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: eDoc: 519889
Other: Local-ID: C1256104005ECAFC-ACEBB86486F4D5B2C125615B005D0C7B-OhlbachWeidenbach95
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Title: Journal of Automated Reasoning
Source Genre: Journal
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Pages: - Volume / Issue: 15 (2) Sequence Number: - Start / End Page: 267 - 275 Identifier: ISSN: 0168-7433