Results for 'Expansion of a structure'

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  1.  39
    Generic expansions of ω-categorical structures and semantics of generalized quantifiers.A. A. Ivanov - 1999 - Journal of Symbolic Logic 64 (2):775-789.
    LetMbe a countably infinite ω-categorical structure. Consider Aut(M) as a complete metric space by definingd(g, h) = Ω{2−n:g(xn) ≠h(xn) org−1(xn) ≠h−1(xn)} where {xn:n∈ ω} is an enumeration ofMAn automorphism α ∈ Aut(M) is generic if its conjugacy class is comeagre. J. Truss has shown in [11] that if the set P of all finite partial isomorphisms contains a co-final subset P1closed under conjugacy and having the amalgamation property and the joint embedding property then there is a generic automorphism. In (...)
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  2.  31
    Ages of Expansions of ω-Categorical Structures.A. Ivanov & K. Majcher - 2007 - Notre Dame Journal of Formal Logic 48 (3):371-380.
    The age of a structure M is the set of all isomorphism types of finite substructures of M. We study ages of generic expansions of ω-stable ω-categorical structures.
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  3. On this page.A. Structural Model Of Turnout & In Voting - 2011 - Emergence: Complexity and Organization 9 (4).
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  4.  27
    Residuation, Structural Rules and Context Freeness.Gerhard Jager & Structural Rules Residuation - 2004 - Journal of Logic, Language and Information 13 (1):47-59.
    The article presents proofs of the context freeness of a family of typelogical grammars, namely all grammars that are based on a uni- ormultimodal logic of pure residuation, possibly enriched with thestructural rules of Permutation and Expansion for binary modes.
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  5. A computably categorical structure whose expansion by a constant has infinite computable dimension.Denis R. Hirschfeldt, Bakhadyr Khoussainov & Richard A. Shore - 2003 - Journal of Symbolic Logic 68 (4):1199-1241.
    Cholak, Goncharov, Khoussainov, and Shore [1] showed that for each k > 0 there is a computably categorical structure whose expansion by a constant has computable dimension k. We show that the same is true with k replaced by ω. Our proof uses a version of Goncharov's method of left and right operations.
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  6.  15
    Automorphisms of Homogeneous Structures.A. Ivanov - 2005 - Notre Dame Journal of Formal Logic 46 (4):419-424.
    We give an example of a simple ω-categorical theory such that for any finite set of parameters the corresponding constant expansion does not satisfy the PAPA. We describe a wide class of homogeneous structures with generic automorphisms and show that some natural reducts of our example belong to this class.
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  7.  25
    Roderick Murchison and the structure of Africa: A geological prediction and its consequences for British expansion.Robert A. Stafford - 1988 - Annals of Science 45 (1):1-40.
    Sir Roderick Murchison's Humboldtian belief in a close linkage between the sciences of geology and physical geography finds its best illustration in his prediction of the three-dimensional structure of Africa in 1852 from explorers' reports, fossil discoveries, and a theory of crustal uplift and fracturing elaborated by the Cambridge mathematician William Hopkins. From this remarkably accurate hypothesis and other theories which he had developed concerning the occurrence of coal and gold, Murchison concluded that exploitable deposits of economic minerals which (...)
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  8.  13
    The low temperature thermal expansion and related thermodynamic properties of alkali halides with a caesium chloride structure.A. C. Bailey & B. Yates - 1967 - Philosophical Magazine 16 (144):1241-1248.
  9.  71
    A compact representation of proofs.Dale A. Miller - 1987 - Studia Logica 46 (4):347 - 370.
    A structure which generalizes formulas by including substitution terms is used to represent proofs in classical logic. These structures, called expansion trees, can be most easily understood as describing a tautologous substitution instance of a theorem. They also provide a computationally useful representation of classical proofs as first-class values. As values they are compact and can easily be manipulated and transformed. For example, we present an explicit transformations between expansion tree proofs and cut-free sequential proofs. A theorem (...)
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  10.  43
    Expansion of a model of a weakly o-minimal theory by a family of unary predicates.Bektur Sembiuly Baizhanov - 2001 - Journal of Symbolic Logic 66 (3):1382-1414.
    A subset A $\subseteq$ M of a totally ordered structure M is said to be convex, if for any a, b $\in A: [a . A complete theory of first order is weakly o-minimal (M. Dickmann [D]) if any model M is totally ordered by some $\emptyset$ -definable formula and any subset of M which is definable with parameters from M is a finite union of convex sets. We prove here that for any model M of a weakly o-minimal (...)
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  11.  12
    More Than Life Itself: A Synthetic Continuation in Relational Biology.A. H. Louie - 2009 - De Gruyter.
    A. H. Louie's More Than Life Itself is an exploratory journey in relational biology, a study of life in terms of the organization of entailment relations in living systems. This book represents a synergy of the mathematical theories of categories, lattices, and modelling, and the result is a synthetic biology that provides a characterization of life. Biology extends physics. Life is not a specialization of mechanism, but an expansive generalization of it. Organisms and machines share some common features, but organisms (...)
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  12.  15
    Hyperarithmetical relations in expansions of recursive structures.Alan D. Vlach - 1994 - Annals of Pure and Applied Logic 66 (2):163-196.
    Let be a model of a theory T. Depending on wether is decidable or recursive, and on whether T is strongly minimal or -minimal, we find conditions on which guarantee that every infinite independent subset of is not recursively enumerable. For each of the same four cases we also find conditions on which guarantee that every infinite independent subset of has Turing degree 0'. More generally, let be a recursive -structure, R a relation symbol not in , ψ a (...)
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  13.  23
    Development of a structured process for fair allocation of critical care resources in the setting of insufficient capacity: a discussion paper.Tim Cook, Kim Gupta, Chris Dyer, Robin Fackrell, Sarah Wexler, Heather Boyes, Ben Colleypriest, Richard Graham, Helen Meehan, Sarah Merritt, Derek Robinson & Bernie Marden - 2021 - Journal of Medical Ethics 47 (7):456-463.
    Early in the COVID-19 pandemic there was widespread concern that healthcare systems would be overwhelmed, and specifically, that there would be insufficient critical care capacity in terms of beds, ventilators or staff to care for patients. In the UK, this was avoided by a threefold approach involving widespread, rapid expansion of critical care capacity, reduction of healthcare demand from non-COVID-19 sources by temporarily pausing much of normal healthcare delivery, and by governmental and societal responses that reduced demand through national (...)
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  14.  30
    Duplication of directed graphs and exponential blow up of proofs.A. Carbone - 1999 - Annals of Pure and Applied Logic 100 (1-3):1-67.
    We develop a combinatorial model to study the evolution of graphs underlying proofs during the process of cut elimination. Proofs are two-dimensional objects and differences in the behavior of their cut elimination can often be accounted for by differences in their two-dimensional structure. Our purpose is to determine geometrical conditions on the graphs of proofs to explain the expansion of the size of proofs after cut elimination. We will be concerned with exponential expansion and we give upper (...)
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  15.  46
    Computable isomorphisms, degree spectra of relations, and Scott families.Bakhadyr Khoussainov & Richard A. Shore - 1998 - Annals of Pure and Applied Logic 93 (1-3):153-193.
    The spectrum of a relation on a computable structure is the set of Turing degrees of the image of R under all isomorphisms between and any other computable structure . The relation is intrinsically computably enumerable if its image under all such isomorphisms is c.e. We prove that any computable partially ordered set is isomorphic to the spectrum of an intrinsically c.e. relation on a computable structure. Moreover, the isomorphism can be constructed in such a way that (...)
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  16.  39
    Fusing O-Minimal Structures.A. J. Wilkie - 2005 - Journal of Symbolic Logic 70 (1):271 - 281.
    In this note I construct a proper o-minimal expansion of the ordered additive group of rationals.
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  17.  66
    Coercion, political accountability, and voter ignorance: The mistaken medicaid expansion ruling in NFIB v. Sebelius.Alexander A. Guerrero - 2013 - Public Affairs Quarterly 27 (3).
    Although the individual mandate was upheld and the Commerce Clause may have been cabined, the decision to strike down a significant element of the “Medicaid expansion” may prove to be the most significant aspect of the Supreme Court’s decision in NFIB v. Sebelius. Under the Affordable Care Act (ACA), States were required to extend Medicaid coverage to all individuals under the age of 65 with incomes below 133 percent of the poverty line, a new “essential health benefits” package was (...)
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  18. The cortical microstructural basis of lateralized cognition: a review.Steven A. Chance - 2014 - Frontiers in Psychology 5:82475.
    The presence of asymmetry in the human cerebral hemispheres is detectable at both the macroscopic and microscopic scales. The horizontal expansion of cortical surface during development (within individual brains), and across evolutionary time (between species), is largely due to the proliferation and spacing of the microscopic vertical columns of cells that form the cortex. In the asymmetric planum temporale (PT), minicolumn width asymmetry is associated with surface area asymmetry. Although the human minicolumn asymmetry is not large, it is estimated (...)
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  19. Psychedelic Expansion of Consciousness: A Phenomenological Study in Terms of Attention.Jason K. Day & Susanne Schmetkamp - 2022 - InCircolo 13:111-135.
    Induced by intake of the psychedelic substances LSD, psilocybin, DMT and mescaline, psychedelic experiences have been extensively described by subjects as entailing a most unusual increase in the scope and quality of their consciousness. Accordingly, psychedelic experiences have been widely characterised as an “expansion of consciousness.” This article poses the following question, as yet unaddressed in contemporary philosophy and the tradition of phenomenology: to what exactly does “expansion of consciousness” refer as a general characterisation of psychedelic experiences, and (...)
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  20.  53
    Expansions of o-Minimal Structures by Iteration Sequences.Chris Miller & James Tyne - 2006 - Notre Dame Journal of Formal Logic 47 (1):93-99.
    Let P be the ω-orbit of a point under a unary function definable in an o-minimal expansion ℜ of a densely ordered group. If P is monotonically cofinal in the group, and the compositional iterates of the function are cofinal at +\infty in the unary functions definable in ℜ, then the expansion (ℜ, P) has a number of good properties, in particular, every unary set definable in any elementarily equivalent structure is a disjoint union of open intervals (...)
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  21.  60
    Computably categorical structures and expansions by constants.Peter Cholak, Sergey Goncharov, Bakhadyr Khoussainov & Richard A. Shore - 1999 - Journal of Symbolic Logic 64 (1):13-37.
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  22. On expansions of o-minimal structures.Harvey Friedman - manuscript
    An o-minimal structure is any relational structure in any relational type in the first order predicate calculus with equality, where one symbol is reserved to be a dense linear ordering without endpoints, satisfying the following condition: that every first order definable subset of the domain is a finite union of intervals whose endpoints are in the domain or are ±•. First order definability always allows any parameters, unless explicitly indicated otherwise.
     
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  23. Тенденції розвитку міжнародного туризму.Oleksandr P. Krupskyi, A. Samoilenko, A. Komarova & M. Morozov - 2019 - Економічний Простір 149:29-34.
    The sphere of international tourism for the period 2000–2018 has been explored and analyzed in the article. The dynamics of the world tourist flows development and income from international tourism are considered, the determinants of development are derived, the regional structure of the world market of tourist services is given. The development of the tourism industry in the world is analyzed by indicators: the number of tourist arrivals, tourism revenues at current prices, total contribution of tourism to GDP. The (...)
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  24.  32
    Expansions of o-minimal structures by fast sequences.Harvey Friedman & Chris Miller - 2005 - Journal of Symbolic Logic 70 (2):410-418.
    Let ℜ be an o-minimal expansion of (ℝ, <+) and (φk)k∈ℕ be a sequence of positive real numbers such that limk→+∞f(φk)/φk+1=0 for every f:ℝ→ ℝ definable in ℜ. (Such sequences always exist under some reasonable extra assumptions on ℜ, in particular, if ℜ is exponentially bounded or if the language is countable.) Then (ℜ, (S)) is d-minimal, where S ranges over all subsets of cartesian powers of the range of φ.
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  25.  51
    Why the new liberalism isn't all that new, and why the old liberalism isn't what we thought it was.William A. Galston - 2007 - Social Philosophy and Policy 24 (1):289-305.
    It is conventional to distinguish between an old liberalism, with a robust conception of private property and a limited role for government in the economy, and a new liberalism that permits government to override individual property rights in the pursuit of the general welfare. The New Deal is often taken to mark the dividing line between these two forms of liberal governance. But when we focus on property rights through the magnifying lens of Takings Clause jurisprudence, we find that the (...)
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  26.  19
    The Power in Rural Place Stigma.Christina A. R. Malatzky & Danielle L. Couch - 2023 - Journal of Bioethical Inquiry 20 (2):237-248.
    The phenomenon and implications of stigma have been recognized across many contexts and in relation to many discrete issues or conditions. The notion of spatial stigma has been developed within stigma literature, although the importance and relevance of spatial stigma for rural places and rural people have been largely neglected. This is the case even within fields of inquiry like public and rural health, which are expansively tasked with addressing the socio-structural drivers of health inequalities. In this paper, we argue (...)
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  27.  34
    Researcher Perspectives on Data Sharing in Deep Brain Stimulation.Peter Zuk, Clarissa E. Sanchez, Kristin Kostick, Laura Torgerson, Katrina A. Muñoz, Rebecca Hsu, Lavina Kalwani, Demetrio Sierra-Mercado, Jill O. Robinson, Simon Outram, Barbara A. Koenig, Stacey Pereira, Amy L. McGuire & Gabriel Lázaro-Muñoz - 2020 - Frontiers in Human Neuroscience 14:578687.
    The expansion of research on deep brain stimulation (DBS) and adaptive DBS (aDBS) raises important neuroethics and policy questions related to data sharing. However, there has been little empirical research on the perspectives of experts developing these technologies. We conducted semi-structured, open-ended interviews with aDBS researchers regarding their data sharing practices and their perspectives on ethical and policy issues related to sharing. Researchers expressed support for and a commitment to sharing, with most saying that they were either sharing their (...)
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  28.  37
    Twist-Valued Models for Three-Valued Paraconsistent Set Theory.Walter A. Carnielli & Marcelo E. Coniglio - forthcoming - Logic and Logical Philosophy:1.
    We propose in this paper a family of algebraic models of ZFC based on the three-valued paraconsistent logic LPT0, a linguistic variant of da Costa and D’Ottaviano’s logic J3. The semantics is given by twist structures defined over complete Boolean agebras. The Boolean-valued models of ZFC are adapted to twist-valued models of an expansion of ZFC by adding a paraconsistent negation. This allows for inconsistent sets w satisfying ‘not (w = w)’, where ‘not’ stands for the paraconsistent negation. Finally, (...)
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  29.  27
    The Influence of Network Exchange Brokers on Sustainable Initiatives in Organizational Networks.Lance W. Saunders, Wendy L. Tate, George A. Zsidisin & Joe Miemczyk - 2019 - Journal of Business Ethics 154 (3):849-868.
    Ethical sourcing and socially responsible purchasing is increasingly on the business agenda, but developing and implementing policy and practice across a global network of suppliers is challenging. The purpose of this paper is to expand theory on the nature of linkages between firms in a social network, specifically postulating how ties between organizations can be configured to facilitate development, diffusion, and adoption of sustainability initiatives. The theory development provides a lens with which to view the influence of a firm’s structural (...)
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  30.  33
    The phenomenon of transdisciplinary cognitive revolution.V. A. Bazhanov & A. G. Kraeva - 2016 - Liberal Arts in Russiaроссийский Гуманитарный Журналrossijskij Gumanitarnyj Žurnalrossijskij Gumanitarnyj Zhurnalrossiiskii Gumanitarnyi Zhurnal 5 (2):91.
    Phenomenon of transdisciplinarity was put into the fore of analysis rather recently. In the article an attempt is made to find out whether it is possible to attribute this phenomenon not only to a science of the 21st century, or we have here the case where some scientific realities come to the attention of researchers with certain delay and has its value for the culture in general? It is possible to judge even the emergence of a kind of cognitive revolution (...)
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  31.  9
    Relational Psychoanalysis 3 Volume Set.Stephen A. Mitchell, Lewis Aron, Adrienne Harris & Melanie Suchet (eds.) - 1978 - Routledge.
    Over the course of the past 15 years, there has been a vast sea change in American psychoanalysis. It takes the form of a broad movement away from classical psychoanalytic theorizing grounded in Freud's drive theory toward models of mind and development grounded in object relations concepts. In clinical practice, there has been a corresponding movement away from the classical principles of neutrality, abstinence and anonymity toward an interactive vision of the analytic situation that places the analytic relationship, with its (...)
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  32.  38
    Environmental monitoring using a robotized wireless sensor network.Sevil A. Ahmed, Vasil L. Popov, Andon V. Topalov & Nikola G. Shakev - 2018 - AI and Society 33 (2):207-214.
    Big cities and growing industrial areas bring high risk of different kinds of pollutions which would implicate to the quality of life of the society. Discovering and monitoring of polluted areas using autonomous mobile robots is nowadays a frequently considered solution concerning both environmental and human safety problems. Being part of a distributed control system, such robots can help to improve the efficiency of the existing conventional pollution prevention systems. On the other hand, during the last decade, wireless sensor networks (...)
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  33.  26
    Export Controls and the Tensions Between Academic Freedom and National Security.Samuel A. W. Evans & Walter D. Valdivia - 2012 - Minerva 50 (2):169-190.
    In the U.S.A., advocates of academic freedom—the ability to pursue research unencumbered by government controls—have long found sparring partners in government officials who regulate technology trade. From concern over classified research in the 1950s, to the expansion of export controls to cover trade in information in the 1970s, to current debates over emerging technologies and global innovation, the academic community and the government have each sought opportunities to demarcate the sphere of their respective authority and autonomy and assert themselves (...)
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  34.  5
    Transgenic Crops in Argentina: The Ecological and Social Debt.Walter A. Pengue - 2005 - Bulletin of Science, Technology and Society 25 (4):314-322.
    There is no doubt that soybean is the most important crop for Argentina, with a planted surface that rose 11,000,000 hectares and a production of around 35,000,000 metric tons. During the 1990s, there was a significant agriculture transformation in the country, motorize by the adoption of transgenic crops (soy-bean, maize, and cotton) under the no-tillage system. The expansion of this model has been spread not only in the Pampas but also in very rich areas with high biodiversity, opening a (...)
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  35.  10
    Towards an embodied science of intersubjectivity: widening the scope of social understanding research.Hanne De Jaegher & Ezequiel A. Di Paolo (eds.) - 2015 - [Lausanne, Switzerland]: Frontiers Media SA.
    An important amount of research effort in psychology and neuroscience over the past decades has focused on the problem of social cognition. This problem is understood as how we figure out other minds, relying only on indirect manifestations of other people's intentional states, which are assumed to be hidden, private and internal. Research on this question has mostly investigated how individual cognitive mechanisms achieve this task. A shift in the internalist assumptions regarding intentional states has expanded the research focus with (...)
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  36.  27
    Psyche and Soma: Physicians and Metaphysicians on the Mind-Body Problem from Antiquity to Enlightenment (review).Richard A. Watson - 2001 - Journal of the History of Philosophy 39 (1):142-143.
    In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Philosophy 39.1 (2001) 142-143 [Access article in PDF] Wright, John P. and Paul Potter, editors. Psyche and Soma: Physicians and Metaphysicians on the Mind-Body Problem from Antiquity to Enlightenment. New York: Oxford University Press, 2000. Pp. xii + 298. Cloth, $72.00. The mind-body problem has a long history that begins well before Descartes made it extreme by presenting mind as unextended active thinking and (...)
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  37.  11
    Shifting from Equality toward Equity: Addressing Disparities in Research Participation for Clinical Cancer Research.Andrew Hantel, Gregory A. Abel, Jeffrey M. Peppercorn, Jonathan M. Marron & Elizabeth Warner - 2024 - Journal of Clinical Ethics 35 (1):8-22.
    There is societal consensus that cancer clinical trial participation is unjust because some sociodemographic groups have been systematically underrepresented. Despite this, neither a definition nor an ethical explication for the justice norm of equity has been clearly articulated in this setting, leading to confusion over its application and goals. Herein we define equity as acknowledging sociodemographic circumstances and apportioning resource and opportunity allocation to eliminate disparities in outcomes, and we explore the issues and tensions this norm generates through practical examples. (...)
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  38.  5
    The effect of economic restructuring on puerto Rican women's labor force participation in the formal sector.Chuck W. Peek & Barbara A. Zsembik - 1994 - Gender and Society 8 (4):525-540.
    The joint effort by the U.S. government and the political elite of Puerto Rico to industrialize the island created increased demand for female labor and a decline in the number of jobs traditionally held by men. The authors examine whether women's labor force participation in the formal sector responds to improving opportunities for women, declining opportunities for men, or the household's changing opportunity structures. Specifically, they examine a woman's return to work after the birth of her first child as the (...)
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  39.  42
    Structure theorems for o-minimal expansions of groups.Mario J. Edmundo - 2000 - Annals of Pure and Applied Logic 102 (1-2):159-181.
    Let R be an o-minimal expansion of an ordered group R has no poles, R cannot define a real closed field with domain R and order R is eventually linear and every R -definable set is a finite union of cones. As a corollary we get that Th has quantifier elimination and universal axiomatization in the language with symbols for the ordered group operations, bounded R -definable sets and a symbol for each definable endomorphism of the group.
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  40.  35
    Expansions of the real field with power functions.Chris Miller - 1994 - Annals of Pure and Applied Logic 68 (1):79-94.
    We investigate expansions of the ordered field of real numbers equipped with a family of real power functions. We show in particular that the theory of the ordered field of real numbers augmented by all restricted analytic functions and all real power functions admits elimination of quantifiers and has a universal axiomatization. We derive that every function of one variable definable in this structure, not ultimately identically 0, is asymptotic at + ∞ to a real function of the form (...)
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  41.  27
    Elimination of Imaginaries in Expansions of O-Minimal Structures by Generic Sets.Sergio Fratarcangeli - 2005 - Journal of Symbolic Logic 70 (4):1150 - 1160.
    Let TP be the theory obtained by adding a generic predicate to an o-minimal theory T. We prove that if T admits elimination of imaginaries, then TP also admits elimination of imaginaries.
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  42.  3
    The expansion of metaphysics.Miklos Veto - 2018 - Eugene, Oregon: Cascade Books. Edited by William C. Hackett & David Carr.
    The culmination of a lifetime’s preoccupation with crucial human concerns too often curiously marginalized by the history of philosophy, The Expansion of Metaphysics sheds new light on freedom and the will by making the phenomenon of novelty philosophically intelligible. The a priori synthesis of Kant is joined to Judeo-Christian themes (the kenosis of Christ in the incarnation and the tzimtzum of God in the creation) in order to develop a doctrine of “superabundance” (freedom and love) and “singularity” (with the (...)
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  43.  14
    A First-Order Expansion of Artemov and Protopopescu’s Intuitionistic Epistemic Logic.Youan Su & Katsuhiko Sano - 2023 - Studia Logica 111 (4):615-652.
    Intuitionistic epistemic logic by Artemov and Protopopescu (Rev Symb Log 9:266–298, 2016) accepts the axiom “if A, then A is known” (written $$A \supset K A$$ ) in terms of the Brouwer–Heyting–Kolmogorov interpretation. There are two variants of intuitionistic epistemic logic: one with the axiom “ $$KA \supset \lnot \lnot A$$ ” and one without it. The former is called $$\textbf{IEL}$$, and the latter is called $$\textbf{IEL}^{-}$$. The aim of this paper is to study first-order expansions (with equality and function (...)
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  44.  9
    Lexical Alignment is Pervasive Across Contexts in Non‐WEIRD Adult–Child Interactions.Adriana Chee Jing Chieng, Camille J. Wynn, Tze Peng Wong, Tyson S. Barrett & Stephanie A. Borrie - 2024 - Cognitive Science 48 (3):e13417.
    Lexical alignment, a communication phenomenon where conversational partners adapt their word choices to become more similar, plays an important role in the development of language and social communication skills. While this has been studied extensively in the conversations of preschool‐aged children and their parents in Western, Educated, Industrialized, Rich, and Democratic (WEIRD) communities, research in other pediatric populations is sparse. This study makes significant expansions on the existing literature by focusing on alignment in naturalistic conversations of school‐aged children from a (...)
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  45.  7
    Generic Expansions of Geometric Theories.Somaye Jalili, Massoud Pourmahdian & Nazanin Roshandel Tavana - forthcoming - Journal of Symbolic Logic:1-22.
    As a continuation of ideas initiated in [19], we study bi-colored (generic) expansions of geometric theories in the style of the Fraïssé–Hrushovski construction method. Here we examine that the properties $NTP_{2}$, strongness, $NSOP_{1}$, and simplicity can be transferred to the expansions. As a consequence, while the corresponding bi-colored expansion of a red non-principal ultraproduct of p-adic fields is $NTP_{2}$, the expansion of algebraically closed fields with generic automorphism is a simple theory. Furthermore, these theories are strong with $\operatorname (...)
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  46.  6
    A Family of dp-Minimal Expansions of (Z;+).Chieu-Minh Tran & Erik Walsberg - 2023 - Notre Dame Journal of Formal Logic 64 (2):225-238.
    We consider structures of the form (Z;+,C), where C is an additive cyclic order on (Z;+). We show that such structures are dp-minimal and in this way produce a continuum-size family of dp-minimal expansions of (Z;+) such that no two members of the family define the same subsets of Z.
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  47.  81
    A Meta-Analysis of the “Erasing Race” Effect in the United States and Some Theoretical Considerations.Michael A. Woodley of Menie, Michael D. Heeney, Mateo Peñaherrera-Aguirre, Matthew A. Sarraf, Randy Banner & Heiner Rindermann - 2020 - Frontiers in Psychology 11:525658.
    The “erasing race” effect is the reduction of the salience of “race” as an alliance cue when recalling coalition membership, once more accurate information about coalition structure is presented. We conducted a random-effects model meta-analysis of this effect using five United States studies (containing nine independent effect sizes). The effect was found (ρ = 0.137, K = 9, 95% CI = 0.085 to 0.188). However, no decline effect or moderation effects were found (a “decline effect” in this context would (...)
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  48.  8
    Tame Expansions of $\omega$ -Stable Theories and Definable Groups.Haydar Göral - 2019 - Notre Dame Journal of Formal Logic 60 (2):161-194.
    We study groups definable in tame expansions of ω-stable theories. Assuming several tameness conditions, we obtain structural theorems for groups definable and interpretable in these expansions. As our main example, by characterizing independence in the pair, where K is an algebraically closed field and G is a multiplicative subgroup of K× with the Mann property, we show that the pair satisfies the assumptions. In particular, this provides a characterization of definable and interpretable groups in in terms of algebraic groups in (...)
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    Enriching a predicate and tame expansions of the integers.Gabriel Conant, Christian D’Elbée, Yatir Halevi, Léo Jimenez & Silvain Rideau-Kikuchi - forthcoming - Journal of Mathematical Logic.
    Journal of Mathematical Logic, Ahead of Print. Given a structure [math] and a stably embedded [math]-definable set [math], we prove tameness preservation results when enriching the induced structure on [math] by some further structure [math]. In particular, we show that if [math] and [math] are stable (respectively, superstable, [math]-stable), then so is the theory [math] of the enrichment of [math] by [math]. Assuming simplicity of [math], elimination of hyperimaginaries and a further condition on [math] related to the (...)
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    Algebraic Expansions of Logics.Miguel Campercholi, Diego Nicolás Castaño, José Patricio Díaz Varela & Joan Gispert - 2023 - Journal of Symbolic Logic 88 (1):74-92.
    An algebraically expandable (AE) class is a class of algebraic structures axiomatizable by sentences of the form $\forall \exists! \mathop{\boldsymbol {\bigwedge }}\limits p = q$. For a logic L algebraized by a quasivariety $\mathcal {Q}$ we show that the AE-subclasses of $\mathcal {Q}$ correspond to certain natural expansions of L, which we call algebraic expansions. These turn out to be a special case of the expansions by implicit connectives studied by X. Caicedo. We proceed to characterize all the AE-subclasses of (...)
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