624,063 research outputs found

    A herbrandized functional interpretation of classical first-order logic

    Get PDF
    We introduce a new typed combinatory calculus with a type constructor that, to each type σ, associates the star type σ^∗ of the nonempty finite subsets of elements of type σ. We prove that this calculus enjoys the properties of strong normalization and confluence. With the aid of this star combinatory calculus, we define a functional interpretation of first-order predicate logic and prove a corresponding soundness theorem. It is seen that each theorem of classical first-order logic is connected with certain formulas which are tautological in character. As a corollary, we reprove Herbrand’s theorem on the extraction of terms from classically provable existential statements.info:eu-repo/semantics/publishedVersio

    Analysis in weak systems

    Get PDF
    The authors survey and comment their work on weak analysis. They describe the basic set-up of analysis in a feasible second-order theory and consider the impact of adding to it various forms of weak Konig's lemma. A brief discussion of the Baire categoricity theorem follows. It is then considered a strengthening of feasibility obtained (fundamentally) by the addition of a counting axiom and showed how it is possible to develop Riemann integration in the stronger system. The paper finishes with three questions in weak analysis.info:eu-repo/semantics/publishedVersio

    A Global Crime Against Women: Sex Trafficking and Its Consequences

    Get PDF
    Sex trafficking, a form of gender-based violence in which a specific gender is the target of violence due to the imbalance of power, is a common present-day global crime (Murturi 2006:83). Women are most often victims of this specific crime, (Muturi 2006:83) and it leaves many workers and victims with health implications such as obtaining HIV and other sexually transmitted diseases (Macias Konstantopoulos et al. 2013:1194). This paper will begin by giving a brief overview of the definition of sex trafficking, before discussing a specific country’s challenge with the problem. I will then analyze the scope of this issue based on the literature, and who the victims are, and finally the consequences trafficking has on its victims. The research problem in this paper is: why does sex trafficking occur and what are its implications

    Post transfer of undertakings psychological contract violation: modelling antecedents and outcomes

    Get PDF
    Msc Human Resource ManagementThe purpose of this study was to test a model of antecedents and outcomes of psychological contract violation based on social exchange theory within the context of an acquisition. A cross-sectional quantitative survey research design was used. A total of 200 office and operational employees who had recently gone through a TUPE transfer process as the result of an acquisition partiCipated in the study. PartiCipants were] asked to complete a questionnaire to measure their perceptions of procedural justice and perceived organisational support experienced at the point of TUPE and the resulting psychological contract violation and employee engagement post-TUPE. Multiple regression analysis through SPSS 19.0 was used as the method of analysis. Results indicate that procedural justice and perceived organisational support predicts psychological contract violation. Results indicate that psychological contract violation in turn predicts employee engagement. In addition, psychological contract violation mediates the relationship between procedural justice, perceived organisational support and employee engagement. Therefore, support has been found to state that the psychological contract can be used to explain the relationship between employee perceptions of fairness and support during a TUPE and their post-TUPE reaction of engagement. The study used cross-sectional and self-reported data which limits the conclusions that can be confirmed about causality and also raises concerns about common method bias. Furthermore, it is acknowledged that various extraneous or confounding variable may have an influence on the variables. The study offers insights into employees' responses within the context of TUPE transfers as explored through the psychological contract within the social exchange theory the framework
    corecore