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Profile: Sebastian Sequoiah-Grayson (University of Groningen)
  1. Sebastian Sequoiah-Grayson (2013). Epistemic Closure and Commutative, Nonassociative Residuated Structures. Synthese 190 (1):113-128.
    K-axiom-based epistemic closure for explicit knowledge is rejected for even the most trivial cases of deductive inferential reasoning on account of the fact that the closure axiom does not extend beyond a raw consequence relation. The recognition that deductive inference concerns interaction as much as it concerns consequence allows for perspectives from logics of multi-agent information flow to be refocused onto mono-agent deductive reasoning. Instead of modeling the information flow between different agents in a communicative or announcement setting, we model (...)
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  2. Sebastian Sequoiah-Grayson (2012). Giovanni Sommaruga (Ed): Formal Theories of Information: From Shannon to Semantic Information Theory and General Concepts of Information. [REVIEW] Minds and Machines 22 (1):35-40.
    Giovanni Sommaruga (ed): Formal Theories of Information: From Shannon to Semantic Information Theory and General Concepts of Information Content Type Journal Article Pages 35-40 DOI 10.1007/s11023-011-9250-2 Authors Sebastian Sequoiah-Grayson, Department of Theoretical Philosophy, Faculty of Philosophy, University of Groningen, Groningen, The Netherlands Journal Minds and Machines Online ISSN 1572-8641 Print ISSN 0924-6495 Journal Volume Volume 22 Journal Issue Volume 22, Number 1.
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  3. Luciano Floridi & Sebastian Sequoiah-Grayson (2009). Introduction. Synthese 167 (2):203-205.
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  4. Sebastian Sequoiah-Grayson (2009). A Positive Information Logic for Inferential Information. Synthese 167 (2):409 - 431.
    Performing an inference involves irreducibly dynamic cognitive procedures. The article proposes that a non-associative information frame, corresponding to a residuated pogroupoid, underpins the information structure involved. The argument proceeds by expounding the informational turn in logic, before outlining the cognitive actions at work in deductive inference. The structural rules of Weakening, Contraction, Commutation, and Association are rejected on the grounds that they cause us to lose track of the information flow in inferential procedures. By taking the operation of information application (...)
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  5. Sebastian Sequoiah-grayson (2009). Dynamic Negation and Negative Information. Review of Symbolic Logic 2 (1):233-248.
    This essay proposes a procedural interpretation of negative information in terms of split negation as procedural prohibition. Information frames and models are introduced, with negation defined as the implication of bottom, 0. A method for extracting the procedures prohibited by complex formulas is outlined, and the relationship between types of prohibited procedures is identified. Definitions of negation types in terms of the implication of 0 on an informational interpretation have been criticized. This criticism turns on the definitions creating a purportedly (...)
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  6. Sebastian Sequoiah-Grayson (2008). The Scandal of Deduction. Journal of Philosophical Logic 37 (1):67 - 94.
    This article provides the first comprehensive reconstruction and analysis of Hintikka’s attempt to obtain a measure of the information yield of deductive inferences. The reconstruction is detailed by necessity due to the originality of Hintikka’s contribution. The analysis will turn out to be destructive. It dismisses Hintikka’s distinction between surface information and depth information as being of any utility towards obtaining a measure of the information yield of deductive inferences. Hintikka is right to identify the failure of canonical information theory (...)
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  7. Sebastian Sequoiah-Grayson (2007). The Metaphilosophy of Information. Minds and Machines 17 (3):331-344.
    This article mounts a defence of Floridi’s theory of strongly semantic information against recent independent objections from Fetzer and Dodig-Crnkovic. It is argued that Fetzer and Dodig-Crnkovic’s objections result from an adherence to a redundant practice of analysis. This leads them to fail to accept an informational pluralism, as stipulated by what will be referred to as Shannon’s Principle, and the non-reductionist stance. It is demonstrated that Fetzer and Dodig-Crnkovic fail to acknowledge that Floridi’s theory of strongly semantic information captures (...)
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  8. Sebastian Sequoiah-Grayson (2006). Information Flow and Impossible Situations. Logique Et Analyse 49 (196):371-398.
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