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À propos de : What Are the New Implications of Chaos for Unpredictability?        

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  • What Are the New Implications of Chaos for Unpredictability?
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  • From the beginning of chaos research until today, the unpredictability of chaos has been a central theme. It is widely believed and claimed by philosophers, mathematicians and physicists alike that chaos has a new implication for unpredictability, meaning that chaotic systems are unpredictable in a way that other deterministic systems are not. Hence, one might expect that the question ‘What are the new implications of chaos for unpredictability?’ has already been answered in a satisfactory way. However, this is not the case. I will critically evaluate the existing answers and argue that they do not fit the bill. Then I will approach this question by showing that chaos can be defined via mixing, which has never before been explicitly argued for. Based on this insight, I will propose that the sought-after new implication of chaos for unpredictability is the following: for predicting any event, all sufficiently past events are approximately probabilistically irrelevant. Introduction Dynamical Systems and Unpredictability 2.1 Dynamical systems 2.2 Natural invariant measures 2.3 Unpredictability Chaos 3.1 Defining chaos 3.2 Defining chaos via mixing Criticism of Answers in the Literature 4.1 Asymptotic unpredictability? 4.2 Unpredictability due to rapid or exponential divergence? 4.3 Macro-predictability and Micro-unpredictability? A General New Implication of Chaos for Unpredictability 5.1 Approximate probabilistic irrelevance 5.2 Sufficiently past events are approximately probabilistically irrelevant for predictions Conclusion
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  • axn053
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  • What Are the New Implications of Chaos for Unpredictability?
  • Charlotte Werndl
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