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Selected Properties of Generalized Hypothetical Syllogism Including the Case of R-implications

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Information Processing and Management of Uncertainty in Knowledge-Based Systems. Theory and Foundations (IPMU 2018)

Abstract

In this paper we investigate the generalized hypothetical syllogism (GHS) in fuzzy logic, which can be seen as the functional equation \(\sup _{z\in [0,1]} T(I(x,z), I(z,y))=I(x,y)\), where I is a fuzzy implication and T is a t-norm. Our contribution is inspired by the article [Fuzzy Sets Syst 323:117–137 (2017)], where the author considered (GHS) when T is the minimum t-norm. We show several general results and then we focus on R-implications. We characterize all t-norms which satisfy (GHS) with arbitrarily fixed R-implication generated from a left-continuous t-norm.

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Acknowledgment

This work has been supported by the National Science Centre, Poland, through Project Number 2015/19/B/ST6/03259.

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Correspondence to Michał Baczyński .

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Baczyński, M., Miś, K. (2018). Selected Properties of Generalized Hypothetical Syllogism Including the Case of R-implications. In: Medina, J., et al. Information Processing and Management of Uncertainty in Knowledge-Based Systems. Theory and Foundations. IPMU 2018. Communications in Computer and Information Science, vol 853. Springer, Cham. https://doi.org/10.1007/978-3-319-91473-2_57

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  • DOI: https://doi.org/10.1007/978-3-319-91473-2_57

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  • Online ISBN: 978-3-319-91473-2

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