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Koji Tanaka
Australian National University
  1. Two Kinds of Logical Impossibility.Alexander Sandgren & Koji Tanaka - forthcoming - Noûs.
    In this paper, we argue that a distinction ought to be drawn between two ways in which a given world might be logically impossible. First, a world w might be impossible because the laws that hold at w are different from those that hold at some other world (say the actual world). Second, a world w might be impossible because the laws of logic that hold in some world (say the actual world) are violated at w. We develop a novel (...)
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  2. Buddhist Philosophy of Logic.Koji Tanaka - 2013 - In Steven Michael Emmanuel (ed.), Blackwell Companion to Buddhist Philosophy. Chichester: Wiley-Blackwell. pp. 320-330.
    Logic in Buddhist Philosophy concerns the systematic study of anumāna (often translated as inference) as developed by Dignāga (480-540 c.e.) and Dharmakīti (600-660 c.e.). Buddhist logicians think of inference as an instrument of knowledge (pramāṇa) and, thus, logic is considered to constitute part of epistemology in the Buddhist tradition. According to the prevalent 20th and early 21st century ‘Western’ conception of logic, however, logical study is the formal study of arguments. If we understand the nature of logic to be formal, (...)
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  3. Logically Impossible Worlds.Koji Tanaka - 2018 - Australasian Journal of Logic 15 (2):489.
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  4. Priest's Anti-Exceptionalism, Candrakīrti and Paraconsistency.Koji Tanaka - forthcoming - In Can Bașkent & Thomas Ferguson (eds.), Graham Priest on Dialetheism and Paraconsistency. Dordrecht: Springer.
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  5.  99
    Paraconsistent Dynamics.Patrick Girard & Koji Tanaka - 2016 - Synthese 193 (1):1-14.
    It has been an open question whether or not we can define a belief revision operation that is distinct from simple belief expansion using paraconsistent logic. In this paper, we investigate the possibility of meeting the challenge of defining a belief revision operation using the resources made available by the study of dynamic epistemic logic in the presence of paraconsistent logic. We will show that it is possible to define dynamic operations of belief revision in a paraconsistent setting.
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  6. Paraconsistency: Logic and Applications.Francesco Berto, Edwin Mares, Koji Tanaka & Francesco Paoli (eds.) - 2013 - Springer.
    A logic is called 'paraconsistent' if it rejects the rule called 'ex contradictione quodlibet', according to which any conclusion follows from inconsistent premises. While logicians have proposed many technically developed paraconsistent logical systems and contemporary philosophers like Graham Priest have advanced the view that some contradictions can be true, and advocated a paraconsistent logic to deal with them, until recent times these systems have been little understood by philosophers. This book presents a comprehensive overview on paraconsistent logical systems to change (...)
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  7.  67
    In Search of the Semantics of Emptiness.Koji Tanaka - 2014 - In JeeLoo Liu & Douglas Berger (eds.), Nothingness in Asian Philosophy. London: Routledge. pp. 55-63.
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  8.  63
    Making Sense of Paraconsistent Logic: The Nature of Logic, Classical Logic and Paraconsistent Logic.Koji Tanaka - 2013 - In Francesco Berto, Edwin Mares, Koji Tanaka & Francesco Paoli (eds.), Paraconsistency: Logic and Applications. Springer. pp. 15--25.
    Max Cresswell and Hilary Putnam seem to hold the view, often shared by classical logicians, that paraconsistent logic has not been made sense of, despite its well-developed mathematics. In this paper, I examine the nature of logic in order to understand what it means to make sense of logic. I then show that, just as one can make sense of non-normal modal logics (as Cresswell demonstrates), we can make `sense' of paraconsistent logic. Finally, I turn the tables on classical logicians (...)
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  9. Don't Think! Just Act!Bronwyn Finnigan & Koji Tanaka - 2010 - In Graham Priest & Damon Young (eds.), Philosophy and the Martial Arts. Open Court.
    Kenzo saw a slight movement of his opponent. “Now is the time to strike!” he thought. He started moving. But before he had time to raise his shinai (sword) he was struck on the men (head) by his opponent. “Ippon!” the judge called.
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  10.  38
    The AGM Theory and Inconsistent Belief Change.Koji Tanaka - 2005 - Logique Et Analyse 48 (189-192):113-150.
    The problem of how to accommodate inconsistencies has attracted quite a number of researchers, in particular, in the area of database theory. The problem is also of concern in the study of belief change. For inconsistent beliefs are ubiquitous. However, comparatively little work has been devoted to discussing the problem in the literature of belief change. In this paper, I examine how adequate the AGM theory is as a logical framework for belief change involving inconsistencies. The technique is to apply (...)
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  11.  86
    On Self-Awareness and the Self.Koji Tanaka - 2014 - In Graham Priest & Damon Young (eds.), Philosophy and Martial Arts. London: Routledge. pp. 127-138.
    Some philosophers of mind, cognitive scientists, phenomenologists as well as Buddhist philosophers have claimed that an awareness of an object is not just an experience of that object but also involves self-awareness. It is sometimes argued that being aware of an object without being aware of oneself is pathological. As anyone who has been involved in martial arts, as well as any sports requiring quick responses such as cricket and tennis, can testify, however, awareness of the self at the time (...)
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  12.  65
    Ways of Doing Cross-Cultural Philosophy.Koji Tanaka - 2016 - In John Makeham (ed.), Learning from the Other: Australian and Chinese Perspectives on Philosophy. Canberra: Australian Academy of the Humanities. pp. 59-65.
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  13.  86
    On Nāgārjuna's Ontological and Semantic Paradox.Koji Tanaka - 2016 - Philosophy East and West 66 (4):1292-1306.
    In one of his key texts, the Mūlamadhyamakakārikā, Nāgārjuna famously sets out to refute the ontology of essence.1 He presents numerous arguments to show that things don’t exist essentially—that is, that things are empty of essence or inherent existence. The doctrine of emptiness has been variously understood by traditional and contemporary commentators. Most radical is the recent interpretation presented by Garfield and Priest. They have rationally reconstructed Nāgārjuna’s doctrine of emptiness as an endorsement of the contradictory nature of reality. According (...)
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  14.  24
    Davidson and Chinese Conceptual Scheme.Koji Tanaka - 2006 - In Bo Mou (ed.), Philosophical Engagement: Davidson’s Philosophy and Chinese Philosophy. Leiden: Brill Academic Publishers. pp. 55-71.
    In one of his influential works ‘One the Very Idea of a Conceptual Scheme’, Donald Davidson argues against conceptual relativism. According to Davidson, ‘we could not be in a position to judge that others had concepts or beliefs radically different from our own’. Davidson’s thesis seems to have a consequence for comparative philosophy, particularly in a comparative study between Chinese and Western traditions of philosophy which are often considered to differ conceptually. If Davidson is correct, it is not clear whether (...)
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  15.  11
    On An Error In Grove's Proof.Koji Tanaka & Graham Priest - 1997 - Logique Et Analyse 158:215-217.
    Nearly a decade has past since Grove gave a semantics for the AGM postulates. The semantics, called sphere semantics, provided a new perspective of the area of study, and has been widely used in the context of theory or belief change. However, the soundness proof that Grove gives in his paper contains an error. In this note, we will point this out and give two ways of repairing it.
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  16.  33
    Inference in the Mengzi 1A:7.Koji Tanaka - 2011 - Journal of Chinese Philosophy 38 (3):444-454.
    In 1A:7 of the Mengzi, Mengzi tries to convince King Xuan of Qi that he is a “true” king. As a reading of Mengzi’s reasoning involved in his attempt at persuasion, David Nivison advances an inferential view, according to which Mengzi’s persuasion involves inferences. In this paper, I consider the assumptions underlying the objections raised against Nivison’s inferential view. I argue that these objections assume a contemporary Western view about the nature of logic and inferences. I propose an alternative characterisation (...)
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