Search results for 'equivalence' (try it on Scholar)

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  1. John Worrall (2011). Underdetermination, Realism and Empirical Equivalence. Synthese 180 (2):157 - 172.score: 18.0
    Are theories 'underdetermined by the evidence' in any way that should worry the scientific realist? I argue that no convincing reason has been given for thinking so. A crucial distinction is drawn between data equivalence and empirical equivalence. Duhem showed that it is always possible to produce a data equivalent rival to any accepted scientific theory. But there is no reason to regard such a rival as equally well empirically supported and hence no threat to realism. Two theories (...)
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  2. Elias Okon & Craig Callender (2011). Does Quantum Mechanics Clash with the Equivalence Principle—and Does It Matter? European Journal for Philosophy of Science 1 (1):133-145.score: 18.0
    Does quantum mechanics clash with the equivalence principle—and does it matter? Content Type Journal Article Pages 133-145 DOI 10.1007/s13194-010-0009-z Authors Elias Okon, Philosophy Department, UC San Diego, 9500 Gilman Dr., La Jolla CA, 92093, USA Craig Callender, Philosophy Department, UC San Diego, 9500 Gilman Dr., La Jolla CA, 92093, USA Journal European Journal for Philosophy of Science Online ISSN 1879-4920 Print ISSN 1879-4912 Journal Volume Volume 1 Journal Issue Volume 1, Number 1.
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  3. Ronald R. Hatch (2004). Clocks and the Equivalence Principle. Foundations of Physics 34 (11):1725-1739.score: 18.0
    Einstein’s equivalence principle has a number of problems, and it is often applied incorrectly. Clocks on the earth do not seem to be affected by the sun’s gravitational potential. The most commonly accepted reason given is a faulty application of the equivalence principle. While no valid reason is available within either the special or general theories of relativity, ether theories can provide a valid explanation. A clock bias of the correct magnitude and position dependence can convert the Selleri (...)
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  4. E. Guendelman & H. Ruchvarger (2006). The Universe Accelerated Expansion Using Extra-Dimensions with Metric Components Found by a New Equivalence Principle. Foundations of Physics 36 (12):1846-1868.score: 18.0
    Curved multi-dimensional space-times (5D and higher) are constructed by embedding them in one higher-dimensional flat space. The condition that the embedding coordinates have a separable form, plus the demand of an orthogonal resulting space-time, implies that the curved multi-dimensional space-time has 4D de-Sitter subspaces (for constant extra-dimensions) in which the 3D subspace has an accelerated expansion. A complete determination of the curved multi-dimensional spacetime geometry is obtained provided we impose a new type of “equivalence principle”, meaning that there is (...)
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  5. Marco Mamone-Capria (2012). Simultaneity as an Invariant Equivalence Relation. Foundations of Physics 42 (11):1365-1383.score: 18.0
    This paper deals with the concept of simultaneity in classical and relativistic physics as construed in terms of group-invariant equivalence relations. A full examination of Newton, Galilei and Poincaré invariant equivalence relations in ℝ4 is presented, which provides alternative proofs, additions and occasionally corrections of results in the literature, including Malament’s theorem and some of its variants. It is argued that the interpretation of simultaneity as an invariant equivalence relation, although interesting for its own sake, does not (...)
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  6. Deborah C. Smith (2007). Superassertibility and the Equivalence Schema: A Dilemma for Wright's Antirealist. Synthese 157 (1):129 - 139.score: 18.0
    Crispin Wright champions the notion of superassertibility as providing a truth predicate that is congenial to antirealists in many debates in that it satisfies relevant platitudes concerning truth and does so in a very minimal way. He motivates such a claim by arguing that superassertibility can satisfy the equivalence schema: it is superassertible that P if and only if P. I argue that Wright’s attempted proof that superassertibility can satisfy this schema is unsuccessful, because it requires a premise that (...)
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  7. Charlotte Werndl (2011). On the Observational Equivalence of Continuous-Time Deterministic and Indeterministic Descriptions. European Journal for Philosophy of Science 1 (2):193-225.score: 18.0
    On the observational equivalence of continuous-time deterministic and indeterministic descriptions Content Type Journal Article Pages 193-225 DOI 10.1007/s13194-010-0011-5 Authors Charlotte Werndl, Department of Philosophy, Logic and Scientific Method, London School of Economics, Houghton Street, London, WC2A 2AE UK Journal European Journal for Philosophy of Science Online ISSN 1879-4920 Print ISSN 1879-4912 Journal Volume Volume 1 Journal Issue Volume 1, Number 2.
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  8. R. Aldrovandi, P. B. Barros & J. G. Pereira (2003). The Equivalence Principle Revisited. Foundations of Physics 33 (4):545-575.score: 18.0
    A precise fomulation of the strong Equivalence Principle is essential to the understanding of the relationship between gravitation and quantum mechanics. The relevant aspects are reviewed in a context including General Relativity but allowing for the presence of torsion. For the sake of brevity, a concise statement is proposed for the Principle: An ideal observer immersed in a gravitational field can choose a reference frame in which gravitation goes unnoticed. This statement is given a clear mathematical meaning through an (...)
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  9. Anja Jauernig (2008). Leibniz on Motion and the Equivalence of Hypotheses. The Leibniz Review 18:1-40.score: 18.0
    Contrary to popular belief, I argue that Leibniz is not hopelessly confused about motion: Leibniz is indeed both a relativist and an absolutist about motion, as suggested by the textual evidence, but, appearances to the contrary, this is not a problem; Leibniz’s infamous doctrine of the equivalence of hypotheses is well-supported and well-integrated within Leibniz’s physical theory; Leibniz’s assertion that the simplest hypothesis of several equivalent hypotheses can be held to be true can be explicated in such a way (...)
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  10. Roberto Cignoli & Daniele Mundici (1998). An Elementary Presentation of the Equivalence Between MV-Algebras and L-Groups with Strong Unit. Studia Logica 61 (1):49-64.score: 18.0
    Aim of this paper is to provide a self-contained presentation of the natural equivalence between MV-algebras and lattice-ordered abelian groups with strong unit.
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  11. Samuel Coskey & Joel David Hamkins (2010). Infinite Time Decidable Equivalence Relation Theory. Notre Dame Journal of Formal Logic 52 (2):203-228.score: 18.0
    We introduce an analogue of the theory of Borel equivalence relations in which we study equivalence relations that are decidable by an infinite time Turing machine. The Borel reductions are replaced by the more general class of infinite time computable functions. Many basic aspects of the classical theory remain intact, with the added bonus that it becomes sensible to study some special equivalence relations whose complexity is beyond Borel or even analytic. We also introduce an infinite time (...)
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  12. Greg Hjorth (1993). Thin Equivalence Relations and Effective Decompositions. Journal of Symbolic Logic 58 (4):1153-1164.score: 18.0
    Let E be a Σ1 1 equivalence relation for which there does not exist a perfect set of inequivalent reals. If 0# exists or if V is a forcing extension of L, then there is a good ▵1 2 well-ordering of the equivalence classes.
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  13. Nikolaos Galatos & Constantine Tsinakis (2009). Equivalence of Consequence Relations: An Order-Theoretic and Categorical Perspective. Journal of Symbolic Logic 74 (3):780-810.score: 18.0
    Equivalences and translations between consequence relations abound in logic. The notion of equivalence can be defined syntactically, in terms of translations of formulas, and order-theoretically, in terms of the associated lattices of theories. W. Blok and D. Pigozzi proved in [4] that the two definitions coincide in the case of an algebraizable sentential deductive system. A refined treatment of this equivalence was provided by W. Blok and B. Jónsson in [3]. Other authors have extended this result to the (...)
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  14. Greg Hjorth (2008). Borel Equivalence Relations Which Are Highly Unfree. Journal of Symbolic Logic 73 (4):1271-1277.score: 18.0
    There is an ergodic, measure preserving, countable Borel equivalence relation E on a standard Borel probability space (X, µ) such that E\c is not essentially free on any conull C ⊂ X.
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  15. Su Gao, Steve Jackson & Vincent Kieftenbeld (2010). The {L}Aczkovich—{K}Omjáth Property for Coanalytic Equivalence Relations. Journal of Symbolic Logic 75 (3):1091-1101.score: 18.0
    Let E be a coanalytic equivalence relation on a Polish space X and (A n ) n∈ω a sequence of analytic subsets of X. We prove that if lim sup n∈K A n meets uncountably many E-equivalence classes for every K ∈ [ω] ω , then there exists a K ∈ [ω] ω such that ⋂ n∈K A n contains a perfect set of pairwise E-inequivalent elements.
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  16. Sylvie Pouteau (2000). Beyond Substantial Equivalence: Ethical Equivalence. [REVIEW] Journal of Agricultural and Environmental Ethics 13 (3-4):273-291.score: 18.0
    The concept of substantial equivalence,introduced for the risk assessment of geneticallymodified (GM) food, is a reducing concept because itignores the context in which these products have beenproduced and brought to the consumer at the end of thefood chain. Food quality cannot be restricted to meresubstance and food acts on human beings not only atthe level of nutrition but also through theirrelationship to environment and society. To make thiscontext explicit, I will introduce an ``equivalencescale'' for the evaluation of food chains (...)
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  17. Sylvie Pouteau (2002). The Food Debate: Ethical Versus Substantial Equivalence. [REVIEW] Journal of Agricultural and Environmental Ethics 15 (3):289-303.score: 18.0
    Substantial equivalence (SE) has beenintroduced to assess novel foods, includinggenetically modified (GM) food, by means ofcomparison with traditional food. Besides anumber of objections concerning its scientificvalidity for risk assessment, the maindifficulty with SE is that it implies that foodcan be qualified on a purely substantial basis.SE embodies the assumption that only reductivescientific arguments are legitimate fordecision-making in public policy due to theemphasis on legal issues. However, the surge ofthe food debate clearly shows that thistechnocratic model is (...)
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  18. Keith A. Kearnes (2000). Categorical Quasivarieties Via Morita Equivalence. Journal of Symbolic Logic 65 (2):839-856.score: 18.0
    We give a new proof of the classification of ℵ 0 -categorical quasivarieties by using Morita equivalence to reduce to term minimal quasivarieties.
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  19. Joshua B. Palmatier & Fernando Guzman (2012). M-Zeroids: Structure and Categorical Equivalence. Studia Logica 100 (5):975-1000.score: 18.0
    In this note we develop a method for constructing finite totally-ordered m-zeroids and prove that there exists a categorical equivalence between the category of finite, totally-ordered m-zeroids and the category of pseudo Łukasiewicz-like implicators.
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  20. Arthur W. Apter (2007). Supercompactness and Level by Level Equivalence Are Compatible with Indestructibility for Strong Compactness. Archive for Mathematical Logic 46 (3-4):155-163.score: 18.0
    It is known that if $\kappa < \lambda$ are such that κ is indestructibly supercompact and λ is 2λ supercompact, then level by level equivalence between strong compactness and supercompactness fails. We prove a theorem which points towards this result being best possible. Specifically, we show that relative to the existence of a supercompact cardinal, there is a model for level by level equivalence between strong compactness and supercompactness containing a supercompact cardinal κ in which κ’s strong compactness (...)
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  21. Ludomir Newelski & Krzysztof Krupi?Ski (2002). On Bounded Type-Definable Equivalence Relations. Notre Dame Journal of Formal Logic 43 (4):231-242.score: 18.0
    We investigate some topological properties of the spaces of classes of bounded type-definable equivalence relations.
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  22. Pablo Acuña & Dennis Dieks (2014). Another Look at Empirical Equivalence and Underdetermination of Theory Choice. European Journal for Philosophy of Science 4 (2):153-180.score: 18.0
    In 1991 Larry Laudan and Jarret Leplin proposed a solution for the problem of empirical equivalence and the empirical underdetermination that is often thought to result from it. In this paper we argue that, even though Laudan and Leplin’s reasoning is essentially correct, their solution should be accurately assessed in order to appreciate its nature and scope. Indeed, Laudan and Leplin’s analysis does not succeed in completely removing the problem or, as they put it, in refuting the thesis of (...)
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  23. Arthur W. Apter (2005). Diamond, Square, and Level by Level Equivalence. Archive for Mathematical Logic 44 (3):387-395.score: 18.0
    We force and construct a model in which level by level equivalence between strong compactness and supercompactness holds, along with certain additional combinatorial properties. In particular, in this model, ♦ δ holds for every regular uncountable cardinal δ, and below the least supercompact cardinal κ, □ δ holds on a stationary subset of κ. There are no restrictions in our model on the structure of the class of supercompact cardinals.
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  24. Arthur W. Apter (2006). Failures of SCH and Level by Level Equivalence. Archive for Mathematical Logic 45 (7):831-838.score: 18.0
    We construct a model for the level by level equivalence between strong compactness and supercompactness in which below the least supercompact cardinal κ, there is a stationary set of cardinals on which SCH fails. In this model, the structure of the class of supercompact cardinals can be arbitrary.
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  25. Sy-David Friedman & Luca Motto Ros (2011). Analytic Equivalence Relations and Bi-Embeddability. Journal of Symbolic Logic 76 (1):243-266.score: 18.0
    Louveau and Rosendal [5] have shown that the relation of bi-embeddability for countable graphs as well as for many other natural classes of countable structures is complete under Borel reducibility for analytic equivalence relations. This is in strong contrast to the case of the isomorphism relation, which as an equivalence relation on graphs (or on any class of countable structures consisting of the models of a sentence of ℒω1ω) is far from complete (see [5, 2]). In this article (...)
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  26. Sy-David Friedman & Tapani Hyttinen (2012). On Borel Equivalence Relations in Generalized Baire Space. Archive for Mathematical Logic 51 (3-4):299-304.score: 18.0
    We construct two Borel equivalence relations on the generalized Baire space κ κ , κ <κ = κ > ω, with the property that neither of them is Borel reducible to the other. A small modification of the construction shows that the straightforward generalization of the Glimm-Effros dichotomy fails.
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  27. Jasper Robinson (2013). Diminished Acquired Equivalence yet Good Discrimination Performance in Older Participants. Frontiers in Psychology 4.score: 18.0
    We asked younger and older human participants to perform computer-based configural discriminations that were designed to detect acquired equivalence. Both groups solved the discriminations but only the younger participants demonstrated acquired equivalence. The discriminations involved learning the preferences (‘like’ [+] or ‘dislike’ [-]) for sports (e.g., tennis [t] and hockey [h]) of four fictitious people (e.g., Alice [A], Beth [B], Charlotte [C] & Dorothy [D]). In one experiment, the discrimination had the form: At+, Bt-, Ct+, Dt-, Ah-, Bh+, (...)
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  28. Saharon Shelah (2004). On Nice Equivalence Relations on Λ2. Archive for Mathematical Logic 43 (1):31-64.score: 18.0
    Let E be an equivalence relation on the powerset of an uncountable set, which is reasonably definable. We assume that any two subsets with symmetric difference of size exactly 1 are not equivalent. We investigate whether for E there are many pairwise non equivalent sets.
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  29. Vedran Čačić & Domagoj Vrgoč (2013). A Note on Bisimulation and Modal Equivalence in Provability Logic and Interpretability Logic. Studia Logica 101 (1):31-44.score: 16.0
    Provability logic is a modal logic for studying properties of provability predicates, and Interpretability logic for studying interpretability between logical theories. Their natural models are GL-models and Veltman models, for which the accessibility relation is well-founded. That’s why the usual counterexample showing the necessity of finite image property in Hennessy-Milner theorem (see [1]) doesn’t exist for them. However, we show that the analogous condition must still hold, by constructing two GL-models with worlds in them that are modally equivalent but not (...)
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  30. Vincent Astier (2008). Elementary Equivalence of Some Rings of Definable Functions. Archive for Mathematical Logic 47 (4):327-340.score: 16.0
    We characterize elementary equivalences and inclusions between von Neumann regular real closed rings in terms of their boolean algebras of idempotents, and prove that their theories are always decidable. We then show that, under some hypotheses, the map sending an L-structure R to the L-structure of definable functions from R n to R preserves elementary inclusions and equivalences and gives a structure with a decidable theory whenever R is decidable. We briefly consider structures of definable functions satisfying an extra condition (...)
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  31. Stephen Parrott (2002). Radiation From a Uniformly Accelerated Charge and the Equivalence Principle. Foundations of Physics 32 (3):407-440.score: 15.0
    We argue that purely local experiments can distinguish a stationary charged particle in a static gravitational field from an accelerated particle in (gravity-free) Minkowski space. Some common arguments to the contrary are analyzed and found to rest on a misidentification of “energy.”.
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  32. A. Rosenberg & N. J. Mackintosh (1973). On Fodor's Distinction Between Strong and Weak Equivalence in Machine Simulation. Philosophy of Science 40 (March):118-120.score: 15.0
  33. Ekaterina B. Fokina & Sy‐David Friedman (2012). On Σ11 Equivalence Relations Over the Natural Numbers. Mathematical Logic Quarterly 58 (1‐2):113-124.score: 15.0
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  34. Vladimir Kanovei (1998). Ulm Classification of Analytic Equivalence Relations in Generic Universes. Mathematical Logic Quarterly 44 (3):287-303.score: 15.0
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  35. Nicola Olivetti & Lea Terracini (1992). N-Prolog and Equivalence of Logic Programs. Journal of Logic, Language and Information 1 (4):253-340.score: 15.0
    The aim of this work is to develop a declarative semantics for N-Prolog with negation as failure. N-Prolog is an extension of Prolog proposed by Gabbay and Reyle (1984, 1985), which allows for occurrences of nested implications in both goals and clauses. Our starting point is an operational semantics of the language defined by means of top-down derivation trees. Negation as finite failure can be naturally introduced in this context. A goal-G (...)
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  36. Arthur W. Apter (2005). An Easton Theorem for Level by Level Equivalence. Mathematical Logic Quarterly 51 (3):247-253.score: 15.0
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  37. Arthur W. Apter (2010). Tallness and Level by Level Equivalence and Inequivalence. Mathematical Logic Quarterly 56 (1):4-12.score: 15.0
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  38. Daniel Dzierzgowski (1993). Typical Ambiguity and Elementary Equivalence. Mathematical Logic Quarterly 39 (1):436-446.score: 15.0
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  39. André Nies (1994). Recursively Enumerable Equivalence Relations Modulo Finite Differences. Mathematical Logic Quarterly 40 (4):490-518.score: 15.0
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  40. Irwin Pollack (1973). Time-Intensity Equivalence Relations for Auditory Pulse Trains. Journal of Experimental Psychology 100 (2):239.score: 15.0
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  41. M. Reeken & V. Kanovei (2003). A Theorem on ROD-Hypersmooth Equivalence Relations in the Solovay Model. Mathematical Logic Quarterly 49 (3):299.score: 15.0
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  42. Ralf Schindler & Philipp Schlicht (2011). Thin Equivalence Relations in Scaled Pointclasses. Mathematical Logic Quarterly 57 (6):615-620.score: 15.0
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  43. A. W. Apter (2003). Failure of GCH and the Level by Level Equivalence Between Strong Compactness and Supercompactness. Mathematical Logic Quarterly 49 (6):587.score: 15.0
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  44. Arthur W. Apter (2007). Indestructibility and Level by Level Equivalence and Inequivalence. Mlq 53 (1):78-85.score: 15.0
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  45. Arthur W. Apter (2009). Indestructibility Under Adding Cohen Subsets and Level by Level Equivalence. Mathematical Logic Quarterly 55 (3):271-279.score: 15.0
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  46. A. W. Apter (2004). Level by Level Equivalence and Strong Compactness. Mathematical Logic Quarterly 50 (1):51.score: 15.0
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  47. Arthur W. Apter (2006). Supercompactness and Measurable Limits of Strong Cardinals II: Applications to Level by Level Equivalence. Mathematical Logic Quarterly 52 (5):457-463.score: 15.0
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  48. Philip W. Davidson & Teresa T. Whitson (1974). Haptic Equivalence Matching of Curvature by Blind and Sighted Humans. Journal of Experimental Psychology 102 (4):687.score: 15.0
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  49. Sam Glucksberg & Joseph H. Danks (1967). Functional Fixedness: Stimulus Equivalence Mediated by Semantic-Acoustic Similarity. Journal of Experimental Psychology 74 (3):400-405.score: 15.0
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  50. G. Robert Grice & John D. Davis (1958). Mediated Stimulus Equivalence and Distinctiveness in Human Conditioning. Journal of Experimental Psychology 55 (6):565.score: 15.0
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