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Profile: Leszek Wronski (Jagiellonian University)
  1.  83
    Leszek Wronski, A New Way to Block a Dutch Book Argument, or The Stubborn Non-Probabilist.
    We point out a yet unnoticed flaw in Dutch Book arguments that relates to a link between degrees of belief and betting quotients. We offer a set of precise conditions governing when a nonprobabilist is immune to the classical Dutch Book argument. We suggest that diachronic Dutch Book arguments are also affected.
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  2.  42
    Leszek Wroński & Tomasz Placek (2009). On Minkowskian Branching Structures☆. Studies in History and Philosophy of Science Part B 40 (3):251-258.
    We introduce the notion of a Minkowskian Branching Structure ("MBS" for short). Then we prove some results concerning the phenomenon of funny business in its finitary and infinitary variants.
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  3.  54
    Jacek Wawer & Leszek Wroński (2015). Towards a New Theory of Historical Counterfactuals. In Pavel Arazim & Michal Dancak (eds.), Logica Yearbook 2014. College Publications 293-310.
    We investigate the semantics of historical counterfactuals in indeterministic contexts. We claim that "plain" and "necessitated" counterfactuals differ in meaning. To substantiate this claim, we propose a new semantic treatment of historical counterfactuals in the Branching Time framework. We supplement our semantics with supervaluationist postsemantics, thanks to which we can explain away the intuitions which seem to talk in favor of the identification of "would" with "would necessarily".
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  4.  11
    Michał Marczyk & Leszek Wroński (2015). Completion of the Causal Completability Problem. British Journal for the Philosophy of Science 66 (2):307-326.
    We give a few results concerning the notions of causal completability and causal closedness of classical probability spaces . We prove that any classical probability space has a causally closed extension; any finite classical probability space with positive rational probabilities on the atoms of the event algebra can be extended to a causally up-to-three-closed finite space; and any classical probability space can be extended to a space in which all correlations between events that are logically independent modulo measure zero event (...)
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  5.  44
    Tomasz Placek & Leszek Wroński (2009). On Infinite Epr-Like Correlations. Synthese 167 (1):1 - 32.
    The paper investigates, in the framework of branching space–times, whether an infinite EPR-like correlation which does not involve finite EPR-like correlations is possible.
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  6.  8
    Leszek Wronski, The Common Cause Principle. Explanation Via Screening Off.
    My Ph.D. dissertation written under the supervision of Prof. Tomasz Placek at the Institute of Philosophy of the Jagiellonian University in Kraków. In one of its most basic and informal shapes, the principle of the common cause states that any surprising correlation between two factors which are believed not to directly influence one another is due to their common cause. Here we will be concerned with a version od this idea which possesses a purely probabilistic formulation. It was introduced, in (...)
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  7.  10
    Leszek Wroński (2014). On a Conjecture by San Pedro. European Journal for Philosophy of Science 4 (3):361-368.
    In a recent paper in this Journal Iñaki San Pedro put forward a conjecture regarding the relationship between no-conspiracy and parameter independence in EPR scenarios; namely, that violation of the former implies violation of the latter. He also offered an argument supporting the conjecture. In this short note I present a method of constructing counterexamples to the conjecture and point to a mistake in the argument.
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  8.  9
    Leszek Wroński & Michał Marczyk (2010). Only Countable Reichenbachian Common Cause Systems Exist. Foundations of Physics 40 (8):1155-1160.
    In this paper we give a positive answer to a problem posed by Hofer-Szabó and Rédei (Int. J. Theor. Phys. 43:1819–1826, 2004) regarding the existence of infinite Reichenbachian common cause systems (RCCSs). An example of a countably infinite RCCS is presented. It is also determined that no RCCSs of greater cardinality exist.
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  9.  19
    Leszek Wroński (2013). Branching Space-Times and Parallel Processing. In Hanne Andersen, Dennis Dieks, Wenceslao González, Thomas Uebel & Gregory Wheeler (eds.), New Challenges to Philosophy of Science. Springer Verlag 135--148.
    There is a remarkable similarity between some mathematical objects used in the Branching Space-Times framework and those appearing in computer science in the fields of event structures for concurrent processing and Chu spaces. This paper introduces the similarities and formulates a few open questions for further research, hoping that both BST theorists and computer scientists can benefit from the project.
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  10.  64
    Tomasz Placek, Jacek Wawer & Leszek Wroński (2014). Causes and (in)Determinism. Erkenntnis 79 (S3):339-341.
    Introduction to a special issue of Erkenntnis.
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  11.  64
    Leszek Wronski & Tomasz Placek (2009). On Infinite EPR-Like Correlations. Synthese 167 (1):1 - 32.
    The paper investigates, in the framework of branching space-times, whether an infinite EPR-like correlation which does not involve finite EPR-like correlations is possible.
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  12. Tomasz Placek & Leszek Wroński (2009). On Infinite EPR-Like Correlations. Synthese 167 (1):1-32.
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  13.  7
    Tomasz Placek & Leszek Wroński, Separate Common Causes and EPR Correlations---A No-Go Result.
    One diagnosis of Bell's theorem is that its premise of Outcome Independence is unreasonably strong, as it postulates one common screener system that purports to explain all the correlations involved. This poses a challenge of constructing a model for quantum correlations that is local, non-conspiratorial, and has many separate screener systems rather than one common screener system. In particular, the assumptions of such models should not entail Bell's inequalities. We prove that the models described do not exist, and hence, the (...)
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  14.  41
    Michal Marczyk & Leszek Wronski, Exhaustive Classication of Finite Classical Probability Spaces with Regard to the Notion of Causal Up-to-N-Closedness.
    Extending the ideas from (Hofer-Szabó and Rédei [2006]), we introduce the notion of causal up-to-n-closedness of probability spaces. A probability space is said to be causally up-to-n-closed with respect to a relation of independence R_ind iff for any pair of correlated events belonging to R_ind the space provides a common cause or a common cause system of size at most n. We prove that a finite classical probability space is causally up-to-3-closed w.r.t. the relation of logical independence iff its probability (...)
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  15.  33
    Michal Marczyk & Leszek Wronski, Only Countable Common Cause Systems Exist.
    In this paper we give a positive answer to a problem posed by G. Hofer-Szabo and M. Redei regarding the existence of infinite common cause systems. An example of a countably infinite CCS is presented, as well as the proof that no CCSs of greater cardinality exist.
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  16.  12
    Leszek Wroński & Michał Marczyk (2013). A New Notion of Causal Closedness. Erkenntnis 79 (S3):1-26.
    In recent years part of the literature on probabilistic causality concerned notions stemming from Reichenbach’s idea of explaining correlations between not directly causally related events by referring to their common causes. A few related notions have been introduced, e.g. that of a “common cause system” (Hofer-Szabó and Rédei in Int J Theor Phys 43(7/8):1819–1826, 2004) and “causal (N-)closedness” of probability spaces (Gyenis and Rédei in Found Phys 34(9):1284–1303, 2004; Hofer-Szabó and Rédei in Found Phys 36(5):745–756, 2006). In this paper we (...)
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  17.  1
    Leszek Wroński (2014). 1 The Principle of the Common Cause: Its Shapes and Content. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 1-29.
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  18.  1
    Leszek Wronski (2014). The Common Cause Principle as a Special Case of the Principle of Sufficient Reason. In Marek Rosiak & Miroslaw Szatkowski (eds.), Substantiality and Causality. De Gruyter 151-162.
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  19.  1
    Leszek Wroński (2014). Contents. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open
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  20. Leszek Wroński (2014). Acknowledgments / Introduction. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open
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  21. Leszek Wroński (2014). Bibliography. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 108-111.
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  22. Leszek Wroński (2014). Conclusion. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 105-107.
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  23. Leszek Wroński (2014). 5 Causal Closedness. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 70-95.
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  24. Leszek Wroński (2014). 6 Causal Completability. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 96-104.
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  25. Leszek Wroński (2014). Index. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 112-113.
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  26. Leszek Wroński (2014). List of Figures / List of Tables. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open
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  27. Leszek Wroński & Tomasz Placek (2009). On Minkowskian Branching Structures. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 40 (3):251-258.
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  28.  9
    Leszek Wroński (forthcoming). Reichenbach's Paradise. De Gruyter Open.
    Since its introduction by Hans Reichenbach, many philosophers have claimed to refute the idea – known as the common cause principle – that any surprising correlation between any two factors that do not directly influence one another is due to some common cause. For example, falsity of the principle is frequently inferred from falsifiability of Bell’s inequalities. The author demonstrates, however, that the situation is not so straightforward. There is more than one version of the principle formulated with the use (...)
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  29. Leszek Wroński, Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”.
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  30. Leszek Wroński (2014). 2 Screening Offand Explanation: Formal Properties. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 30-43.
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  31. Leszek Wroński (2014). 3 The Principle of the Common Cause and the Bell Inequalities. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 44-62.
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  32. Leszek Wroński (2014). 4 The Principle of the Common Cause and the Causal Markov Condition. In Reichenbach’s Paradise Constructing the Realm of Probabilistic Common “Causes”. De Gruyter Open 63-69.
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