This article attempts to answer the question: what has the current migration crisis revealed in relations between Christianity and Islam, two religions with common Abrahamic roots? What conclusions can be drawn about the state of these relations, particularly with regard to ordinary members of the two religions? How should we assess the reaction of Christians in Europe to the inflow of refugees from Muslim countries in the light of the Gospel, the Second Vatican Council and the teaching of Pope Francis?The (...) article consists of four parts. Part I briefly presents Christian-Muslim relationships over the centuries. Part II focuses on the sense of danger occurring in European societies in connection with the influx of Muslims during the migration crisis. Part III presents the teachings of the Second Vatican Council about Islam and Part IV describes Pope Francis’s attitude towards refugees from Muslim countries. (shrink)

This volume explores the range of Alfred North Whitehead's philosophy and his relevance to contemporary philosophical traditions.

The class of equivalential logics comprises all implicative logics in the sense of Rasiowa [9], Suszko's logic SCI and many others. Roughly speaking, a logic is equivalential iff the greatest strict congruences in its matrices are determined by polynomials. The present paper is the first part of the survey in which systematic investigations into this class of logics are undertaken. Using results given in [3] and general theorems from the theory of quasi-varieties of models [5] we give a characterization of (...) all simple C-matrices for any equivalential logic C. In corollaries we give necessary and sufficient conditions for the class of all simple models for a given equivalential logic to be closed under free products. (shrink)

Once regarded as cellular ‘debris’ extracellular vesicles (EVs) emerge as one of the most intriguing entities in cancer pathogenesis. Intercellular trafficking of EVs challenges the notion of cancer cell autonomy, and highlights the multicellular nature of such fundamental processes as stem cell niche formation, tumour stroma generation, angiogenesis, inflammation or immunity. Recent studies reveal that intercellular exchange mediated by EVs runs deeper than expected, and includes molecules causative for cancer progression, such as oncogenes (epidermal growth factor receptor, Ras), and tumour (...) suppressors (PTEN). The uptake of oncogenic EVs (oncosomes) by various cells may profoundly change their biology, signalling patterns and gene expression, and in some cases cause their overt tumorigenic conversion. Moreover, EVs circulating in blood and present in body fluids provide an unprecedented access to the molecular circuitry driving cancer cells, and new technologies are being developed to exploit this property as a source of unique cancer biomarkers. (shrink)

We are facing a crisis of trust in expertise today. Fewer and fewer people trust experts, and more and more politicians openly ignore expert consensus. 'Democracy in the Post-Truth Era' asks what might happen to democracy if we reject the fundamental liberal assumption that people are capable of making informed choices. The book explores the potential impact on society if people, including politicians, never appreciate the relevance of expert opinions. What if people cannot choose between supporters and opponents of key (...) issues such as the causes of climate change, effectiveness of vaccines and ways of combating economic and social crises? Applying social epistemology to these questions, the book considers whether democracy can be defended in the post-truth era. (shrink)

This book is both suitable for logically and algebraically minded graduate and advanced graduate students of mathematics, computer science and philosophy, and ...

There exist different kinds of averaging of the differences of the energy–momentum and angular momentum in normal coordinates NC(P) which give tensorial quantities. The obtained averaged quantities are equivalent mathematically because they differ only by constant scalar dimensional factors. One of these averaging was used in our papers [J. Garecki, Rep. Math. Phys. 33, 57 (1993); Int. J. Theor. Phys. 35, 2195 (1996); Rep. Math. Phys. 40, 485 (1997); J. Math. Phys. 40, 4035 (1999); Rep. Math. Phys. 43, 397 (1999); (...) Rep. Math. Phys. 44, 95 (1999); Ann. Phys. (Leipzig) 11, 441 (2002); M.P. Dabrowski and J. Garecki, Class. Quantum. Grar. 19, 1 (2002)] giving the canonical superenergy and angular supermomentum tensors. In this paper we present another averaging of the differences of the energy–momentum and angular momentum which gives tensorial quantities with proper dimensions of the energy–momentum and angular momentum densities. We have called these tensorial quantities “the averaged relative energy–momentum and angular momentum tensors”. These tensors are very closely related to the canonical superenergy and angular supermomentum tensors and they depend on some fundamental length L > 0. The averaged relative energy–momentum and angular momentum tensors of the gravitational field obtained in the paper can be applied, like the canonical superenergy and angular supermomentum tensors, to coordinate independent analysis (local and in special cases also global) of this field. Up to now we have applied the averaged relative energy–momentum tensors to analyze vacuum gravitational energy and momentum and to analyze energy and momentum of the Friedman (and also more general, only homogeneous) universes. The obtained results are interesting, e.g., the averaged relative energy density is positive definite for the all Friedman and other universes which have been considered in this paper. (shrink)

Sixteen years ago, Prahalad and Hart introduced the possibility of both profitably serving the poor and alleviating poverty. This first iteration of the Bottom/Base of the Pyramid approach focused on selling to the poor. In 2008, after ethical criticisms leveled at it, the field moved to BoP 2.0, instead emphasizing business co-venturing. Since 2015, we have witnessed some calls for a new iteration, with the focus broadening to a more sustainable development approach to poverty alleviation. In this paper, we seek (...) to answer the question: How has the BoP approach evolved over the past 16 years, and has it delivered on its early promise? We conducted a systematic review of 276 papers published in journals in this period, utilizing a rigorous correspondence analysis method to map key trends, and then further examined the 22 empirical studies conducted on the BoP approach. Our results suggest that the field has evolved, passing through a number of trends and coming full circle—with our analysis pointing to more recent BoP literature emphasizing similar themes to those espoused in the initial BoP iteration, rather than reflecting the principles espoused in either BoP 2.0 or BoP 3.0. Our analysis also points to a lack of clear evidence that the BoP concept has delivered on its promise either to businesses or to BoP participants. (shrink)

This book outlines a new conception of political aesthetics based on the notion of order as an aesthetic category pertaining to human perception. Engaging with the thought of a range of figures, including Veblen, Honneth, Foucault, Popper, and MacIntyre, it explores the nature of political aesthetics as an enquiry into the ways in which politics and our perceptions shape one another and our moral choices. Moving beyond the consideration of politics as a matter of perception, the author employs the concept (...) of recognition to shed fresh light on the normative dimensions of politics, before presenting a series of case studies designed to show the utility of this conception of political aesthetics for explaining contemporary urban social phenomena and political conflicts. As such, Politics and Recognition will appeal to sociologists, philosophers, and political social theorists. (shrink)

The notion of local deduction theorem (which generalizes on the known instances of indeterminate deduction theorems, e.g. for the infinitely-valued ukasiewicz logic C ) is defined. It is then shown that a given finitary non-pathological logic C admits the local deduction theorem iff the class Matr(C) of all matrices validating C has the C-filter extension property (Theorem II.1).

With over three billion people currently living below the poverty line, finding better ways to lift people out of poverty is a concern of scholars from a range of disciplines. Within Management Studies, the focus is on developing market-based solutions to poverty alleviation through Bottom/Base-of-the-Pyramid initiatives. To date, these have enjoyed limited success, sometimes even exacerbating the problems they attempt to solve. As a result, there is a growing academic and practitioner push for a third iteration—BoP 3.0—that moves closer to (...) a sustainable development model of poverty alleviation. Through a grounded theory study of 21 Philippines-based organizations implementing poverty alleviation initiatives at the community level, this paper seeks to add to the existing suite of tools and guidance in the BoP field. It does so by questioning how these organizations approach the development and implementation of market-based approaches to poverty alleviation. Our results suggest that these organizations adopt a more community-centric approach, focusing on the creation of a self-reliant community before all else. We find this to be the result of a deeper understanding of the drivers of poverty in the communities they work with. Through the extrapolation of key themes and issues in our data, we propose a new conceptual model for building BoP 3.0 initiatives. This model consists of three intertwined theoretical dimensions: understanding issues as matters of concern; identifying limitations; and navigating time. These elements are linked by three active phases that allowed the organizations to move from one dimension to the next: sensemaking; entrainment; and investment. (shrink)

With over three billion people currently living below the poverty line, finding better ways to lift people out of poverty is a concern of scholars from a range of disciplines. Within Management Studies, the focus is on developing market-based solutions to poverty alleviation through Bottom/Base-of-the-Pyramid initiatives. To date, these have enjoyed limited success, sometimes even exacerbating the problems they attempt to solve. As a result, there is a growing academic and practitioner push for a third iteration—BoP 3.0—that moves closer to (...) a sustainable development model of poverty alleviation. Through a grounded theory study of 21 Philippines-based organizations implementing poverty alleviation initiatives at the community level, this paper seeks to add to the existing suite of tools and guidance in the BoP field. It does so by questioning how these organizations approach the development and implementation of market-based approaches to poverty alleviation. Our results suggest that these organizations adopt a more community-centric approach, focusing on the creation of a self-reliant community before all else. We find this to be the result of a deeper understanding of the drivers of poverty in the communities they work with. Through the extrapolation of key themes and issues in our data, we propose a new conceptual model for building BoP 3.0 initiatives. This model consists of three intertwined theoretical dimensions: understanding issues as matters of concern; identifying limitations; and navigating time. These elements are linked by three active phases that allowed the organizations to move from one dimension to the next: sensemaking; entrainment; and investment. (shrink)

In the paper we study the class of weakly algebraizable logics, characterized by the monotonicity and injectivity of the Leibniz operator on the theories of the logic. This class forms a new level in the non-linear hierarchy of protoalgebraic logics.

This study investigates performance of portfolios composed of British socially responsible investments (SRI) stocks. Using the ‘Global-100 Most Sustainable Corporations in the World’ list (known also as ‘Global-100’) to select the SRI companies, we found that, in the period 2000–2010, the returns of the SRI portfolios were on average higher compared with the corresponding returns of the market indexes. The annual average difference in returns of the SRI portfolios (with dividends) was 5.26 % and 5.69 % relative to the FTSE100 (...) and FTSE4GOOD indexes (the total return versions), respectively, but the differences in returns in the whole period, in individual years and in other sub-periods were in most cases not statistically significant. Positive performance of SRI stocks in the whole sample is, however, evidenced by risk-adjusted measures such as the modified Sharpe ratio (MSR) and certainty equivalent (CEQ) returns, as well as by incorporating various levels of transaction costs. Furthermore, a simple trading strategy relying on selection of SRI stocks from the Global-100 list would beat the market indexes in the whole period 2000–2010, even after inclusion of various levels of transaction costs. We also estimated the Fama–French and Carhart multi-factor models and found that the returns of the SRI portfolios cannot be consistently explained by conventional factors other than the market factor. (shrink)

The main result of the present paper — Theorem 3 — establishes the equivalence of the interpolation and amalgamation properties for a large family of logics and their associated classes of matrices.

This article examines the question: How do local organizations deal with competing temporal dynamics when building and implementing base/bottom of the pyramid initiatives? Time has been neglected in the BoP literature to date, yet, addressing poverty in a developing country requires a complex perspective of time. An analysis of 21 semi-structured interviews with locally based organizations implementing BoP initiatives in the Philippines revealed that the organizations had an ambitemporal perspective. In particular, we discover that they harmonize multiple temporal pacers by (...) making strategic decisions about the best mechanism of entrainment to utilize to move their community and any stakeholders to a long-term temporal horizon. We find that organizations manage this process by generating what we term a “third time” via a process of push-and-pull entrainment between the communities, the business, and the different temporal pacers. This article develops a conceptual framework for helping organizations to harmonize competing temporal dynamics to generate a bespoke “third time” for each community they work with. (shrink)

The class of equivalential logics comprises all implicative logics in the sense of Rasiowa [9], Suszko's logicSCI and many Others. Roughly speaking, a logic is equivalential iff the greatest strict congruences in its matrices (models) are determined by polynomials. The present paper is the first part of the survey in which systematic investigations into this class of logics are undertaken. Using results given in [3] and general theorems from the theory of quasi-varieties of models [5] we give a characterization of (...) all simpleC-matrices for any equivalential logicC (Theorem I.14). In corollaries we give necessary and sufficient conditions for the class of all simple models for a given equivalential logic to be closed under free products (Theorem I.18). (shrink)

Preview: /Adam Chmielewski interviewed by Eli Kramer / AC: In the nineteenth century, some people thought that the sciences should free themselves from the philosophical speculations from which they originated, and that philosophy itself, as obsolete, should be replaced by strict science. Gradually, however, the strict and uncontestable sciences resorted back again to the allegedly obsolete philosophy to understand what they are, what they are actually doing, and why. In other words, not only did science not replace philosophy but (...) returned to it. That is why there emerged the philosophy of science and philosophies of individual sciences, e.g. mathematics, biology, etc. This applies also to urban studies pursued by a great number of specialized disciplines, but a need for a general, philosophical view of the nature of the city is increasingly felt by many people, urban specialists included. The role of philosophy in today’s urban studies cannot mirror the ancient one, which was much more foundational, as in Protagoras, Plato, Aristotle, or Zeno. But it does resemble it. A philosopher cannot pretend to be an architect, urbanist, or city planner. But he or she is particularly qualified to address the problems of how contemporary cities allow their inhabitants to satisfy their needs and ambitions; in other words, to what extent the city is an environment in which human life may flourish. Such questions may profitably be addressed by moral and political philosophy, as well as philosophical anthropology. (shrink)

The paper is conceived as a first study on the Suszko operator. The purpose of this paper is to indicate the existence of close relations holding between the properties of the Suszko operator and the structural properties of the model class for various sentential logics. The emphasis is put on generality both of the results and methods of tackling the problems that arise in the theory of this operator. The attempt is made here to develop the theory for non-protoalgebraic logics.

The paper is conceived as a first study on the Suszko operator. The purpose of this paper is to indicate the existence of close relations holding between the properties of the Suszko operator and the structural properties of the model class for various sentential logics. The emphasis is put on generality both of the results and methods of tackling the problems that arise in the theory of this operator. The attempt is made here to develop the theory for non-protoalgebraic logics.

The first known statements of the deduction theorems for the first-order predicate calculus and the classical sentential logic are due to Herbrand [8] and Tarski [14], respectively. The present paper contains an analysis of closure spaces associated with those sentential logics which admit various deduction theorems. For purely algebraic reasons it is convenient to view deduction theorems in a more general form: given a sentential logic C (identified with a structural consequence operation) in a sentential language I, a quite arbitrary (...) set P of formulas of I built up with at most two distinct sentential variables p and q is called a uniform deduction theorem scheme for C if it satisfies the following condition: for every set X of formulas of I and for any formulas and , C(X{{a}}) iff P(, ) AC(X). [P(, ) denotes the set of formulas which result by the simultaneous substitution of for p and for q in all formulas in P]. The above definition encompasses many particular formulations of theorems considered in the literature to be deduction theorems. Theorem 1.3 gives necessary and sufficient conditions for a logic to have a uniform deduction theorem scheme. Then, given a sentential logic C with a uniform deduction theorem scheme, the lattices of deductive filters on the algebras A similar to the language of C are investigated. It is shown that the join-semilattice of finitely generated (= compact) deductive filters on each algebra A is dually Brouwerian. (shrink)

In the first section logics with an algebraic semantics are investigated. Section 2 is devoted to subdirect products of matrices. There, among others we give the matrix counterpart of a theorem of Jónsson from universal algebra. Some positive results concerning logics with, finite degrees of maximality are presented in Section 3.

The class Matr(C) of all matrices for a prepositional logic (, C) is investigated. The paper contains general results with no special reference to particular logics. The main theorem (Th. (5.1)) which gives the algebraic characterization of the class Matr(C) states the following. Assume C to be the consequence operation on a prepositional language induced by a class K of matrices. Let m be a regular cardinal not less than the cardinality of C. Then Matr (C) is the least class (...) of matrices containing K and closed under m-reduced products, submatrices, matrix homomorphisms, and matrix homomorphic counter-images. (shrink)