In this paper, we examine the relationship between general relativity and the theory of Einstein algebras. We show that according to a formal criterion for theoretical equivalence recently proposed by Halvorson and Weatherall, the two are equivalent theories.

A classic result in the foundations of Yang-Mills theory, due to J. W. Barrett ["Holonomy and Path Structures in General Relativity and Yang-Mills Theory." Int. J. Th. Phys. 30, ], establishes that given a "generalized" holonomy map from the space of piece-wise smooth, closed curves based at some point of a manifold to a Lie group, there exists a principal bundle with that group as structure group and a principal connection on that bundle such that the holonomy map corresponds to (...) the holonomies of that connection. Barrett also provided one sense in which this "recovery theorem" yields a unique bundle, up to isomorphism. Here we show that something stronger is true: with an appropriate definition of isomorphism between generalized holonomy maps, there is an equivalence of categories between the category whose objects are generalized holonomy maps on a smooth, connected manifold and whose arrows are holonomy isomorphisms, and the category whose objects are principal connections on principal bundles over a smooth, connected manifold. This result clarifies, and somewhat improves upon, the sense of "unique recovery" in Barrett's theorems; it also makes precise a sense in which there is no loss of structure involved in moving from a principal bundle formulation of Yang-Mills theory to a holonomy, or "loop", formulation. (shrink)

We show that previous results from epistemic network models showing the benefits of decreased connectivity in epistemic networks are not robust across changes in parameter values. Our findings motivate discussion about whether and how such models can inform real-world epistemic communities. As we argue, only robust results from epistemic network models should be used to generate advice for the real-world, and, in particular, decreasing connectivity is a robustly poor recommendation.

Hobbes and Rousseau relied heavily upon the time-worn metaphor of the body politic to describe and explain their respective political visions. But while Rousseau’s use of the metaphor is largely ac...

La pandemia de la COVID-19 evidencia posibilidades, límites y nuevos desafíos para la ciencia abierta. En este artículo se presentan los resultados de una investigación que tuvo como objetivo contribuir a la comprensión del papel de la ciencia ciudadana, una de las vertientes de la ciencia abierta, en el abordaje de los problemas plantados por la pandemia. Para ello, se llevó a cabo una revisión de literatura especializada y se acometió la identificación y la categorización de estas iniciativas ciudadanas en (...) Brasil durante el periodo del brote de COVID-19. Los resultados de esta investigación muestran un aprendizaje mutuo entre los abordajes de la ciencia ciudadana y las acciones participativas para reducir los riesgos de desastres. Este aprendizaje, por un lado, fortalece el papel de la producción ciudadana de datos, información y conocimiento relevante para la prevención, resiliencia y gestión de estos riesgos; y, por otro lado, dilata el alcance de la ciencia ciudadana para afrontar situaciones de emergencia y desastre, al tiempo que refuerza el carácter situado de este enfoque. [pt] A pandemia da COVID-19 evidencia possibilidades, limites e novos desafios à abertura da ciência. Neste artigo, apresentam-se resultados de pesquisa que objetivou contribuir para o entendimento do papel da ciência cidadã, uma das vertentes da ciência aberta, para lidar com as questões postas pela pandemia. Além de revisão da literatura, o estudo envolveu a identificação e a categorização de iniciativas cidadãs dessa natureza, no Brasil, durante o período de eclosão da COVID-19. Observa-se o aprendizado mútuo entre as abordagens da ciência cidadã e as ações participativas para redução de riscos de desastre. De um lado, fortalece o papel da produção cidadã de dados, informações e conhecimentos relevantes à prevenção, resiliência e gestão desses riscos; e, de outro, alarga o escopo da ciência cidadã para o enfrentamento de situações de emergência e desastre, ao mesmo tempo em que reforça o caráter situado dessa abordagem. (shrink)

Reactive oxygen species (ROS) are highly reactive molecules produced in cells. So far, they have mostly been connected to diseases and pathological conditions. More recent results revealed a somewhat unexpected role of ROS in control of developmental processes. In this review, we elaborate on ROS in development, focussing on their connection to epithelial tissue morphogenesis. After briefly summarising unique characteristics of epithelial cells, we present some characteristic features of ROS species, their production and targets, with a focus on proteins important (...) for epithelial development and function. Finally, we provide examples of regulation of epithelial morphogenesis by ROS, and also of developmental genes that regulate the overall redox status. We conclude by discussing future avenues of research that will further elucidate ROS regulation in epithelial development. (shrink)

This manuscript is intended as a technical supplement to Rosenstock and O'Connor. Calculations are presented for the expected return for strategic players of an iterated prisoner's dilemma which includes guilt-prone grim trigger players, who apologize when they accidentally defect, as well as fake apologizers who in fact act as defectors. See Rosenstock and O'Connor for a discussion of how the results presented here can be interpreted, using ESS analysis and exploring basins of attraction under the replicator dynamics, to help understand (...) the conditions under which guilt can evolve. I hope for this note to both make it easier for others to understand and build on those results, and to demonstrate how expected returns can be calculated for various strategies in various games. (shrink)

Poets are "the institutors of laws, and the founders of civil society, and the inventors of the arts of life, and the teachers who draw into a certain ...

To make sense of large data sets, we often look for patterns in how data points are “shaped” in the space of possible measurement outcomes. The emerging field of topological data analysis offers a toolkit for formalizing the process of identifying such shapes. This article aims to discover why and how the resulting analysis should be understood as reflecting significant features of the systems that generated the data. I argue that a particular feature of TDA—its functoriality—is what enables TDA to (...) translate visual intuitions about structure in data into precise, computationally tractable descriptions of real-world systems. (shrink)

Using results from evolutionary game theory, we analyze the conditions under which guilt can provide individual fitness benefits to actors, and so evolve. In particular, we focus on the individual benefits of guilty apology. We find that guilty apology is more likely to evolve in cases where actors interact repeatedly over long periods of time, where the costs of apology are low or moderate, and where guilt is hard to fake.

Knowledge management hinges upon the presumption that workers within an organization possess knowledge that can be converted into concrete business improvements if the information is harvested and disseminated to others to whom it could be of use. True knowledge management must involve capturing the internal knowledge generated by a firm—its best thinking on products, customers, competitors and processes—and sharing it. Insofar as organizations are concerned, postmodernists argue that one view that has been in appropriately privileged is that of the organization (...) rather than the process of organizing. They draw our attention to the link between individual and collective identity. If there is a link between individual identity and how that individual behaves, there may also a link between collective identity and organizational action, for which a study on discourse ethics is essential. After considering the implications of knowledge management and the actual situation and work culture where the knowledge workers are in action, this paper raises and explores the questions wherein lies our individual identity and what its functional relation ship with the collective identity is. It has been envisaged in this article that through principles-driven cross-functional teams and innovative organizational mechanisms, sharing and conviction building need to be facilitated in modern organizations phasing out bureaucratic approaches and hierarchical power domination. Flexibility with a focused attitude is a must for organizations to adapt in a changing environment. (shrink)

The principle of homophily says that people associate with other groups of people who are mostly like themselves. Many online communities are structured around groups of socially similar individuals. On Twitter, however, people are exposed to multiple, diverse points of view through the public timeline. The authors captured 30,000 tweets about the shooting of George Tiller, a late-term abortion doctor, and the subsequent conversations among pro-life and pro-choice advocates. They found that replies between like-minded individuals strengthen group identity, whereas replies (...) between different-minded individuals reinforce in-group and out-group affiliation. Their results show that people are exposed to broader viewpoints than they were before but are limited in their ability to engage in meaningful discussion. They conclude with implications for different kinds of social participation on Twitter more generally. (shrink)

Debates about God’s personhood, or lack thereof, are central to philosophy of religion. This paper aims to advance these debates by presenting the “greatness of personhood argument” for God’s personhood and a dilemma for those who deny God’s personhood. I also consider various objections to this argument and this dilemma and argue that they fail. Notably, my reasoning in defence of personal theism is cross-cultural insofar as personal theists across various religious traditions can use it. Thus, this paper defends personal (...) theism in a manner that can bring Western and non-Western theists into closer dialogue regarding the topic of God’s personhood. (shrink)

I discuss in this paper a criticism of modal logic due to Donald Davidson and John Wallace. They have claimed that, to quote Wallace, “modal predicate calculus does not provide a reasonable standpoint from which to interpret a language” (1970, p. 147). The aim of this paper is to present and evaluate their argument for this claim.

In this paper, I draw attention to various doctrines common to different Vedāntic traditions. In particular, I pay close attention to the doctrine of beginningless _karman_. I also note that this doctrine seems to stand in tension with Leibnizian Cosmological Arguments (LCAs) and Kalām Cosmological Arguments (KCAs). This tension arises because defenders of these arguments argue that an infinite causal regress or an actual infinite cannot be physically instantiated and because the doctrine of beginningless _karman_ seems to imply that such (...) a regress or actual infinite can be physically instantiated. I address this tension by showing that not all interpretations of beginningless _karman_ involve an infinite causal regress or an actual infinite. I close this paper by highlighting a few features that Vedāntic traditions have that make them more resistant to some objections to LCAs and KCAs. (shrink)

Traditionally, the problem of evil, in its various formulations, has been one of the strongest objections against perfect being theism. In the voluminous literature on this problem, the motif of evil has usually been discussed with respect to human flourishing. In recent decades more focused attention has been paid to animal suffering and the philosophical problems that such suffering poses for perfect being theists. However, this growing body of literature, in Anglo-American philosophical milieus, is largely aimed at sketching a specifically (...) Christian or Christianity-inflected theodicy that would reconcile animal suffering with the existence of an omni-God. In contrast, there are few, if any, systematic attempts to put forth a Hindu theodicy that aims to offer morally justifiable reasons that God has for allowing animal suffering. In this article, we address this scholarly lacuna by illustrating how a Hindu perfect being theist might respond to the problem of animal suffering. (shrink)

New York based Families For Freedom is among a handful of organizations that directly organize deportees and their families. Analyzing the organization’s resignification of criminalized men of color as caregivers, I argue that current deportation policies and practices reorganize care work and kinship while tying gender and sexuality to national belonging. These policies and practices severely compromise the ability of migrant communities to socially reproduce themselves. Furthermore, the convergence of criminalization and immigration enforcement renders the kinship ties of deportable men (...) illegible, and justifies their separation from their loved ones. Since FFF publicly supports men with criminal convictions, it reveals that its members become targets of deportation precisely because they do not and cannot conform to heteronormative prescriptions. (shrink)

ABSTRACT The paper examines the ethical conception of the most well‐known and much discussed Hindu text, the Bhagavad Gītā, in the context of the Western distinction between duty ethics and virtue ethics. Most of the materials published on the Gītā make much of its conception of duty; however, there is no systematic investigation of the notion of virtue in the Gītā. The paper begins with a discussion of the fundamental characteristics of virtue ethics, before undertaking a discussion of the conceptions (...) of duty and virtue in the Gītā. The paper clearly demonstrates that (1) both duty and virtue coexist in the Gītā, and (2) the Gītā accords virtue an important place. (shrink)

The COVID-19 pandemic will likely recede only through development and distribution of an effective vaccine. Although there are many unknowns surrounding COVID-19 vaccine development, vaccine demand will likely outstrip early supply, making prospective planning for vaccine allocation critical for ensuring the ethical distribution of COVID-19 vaccines. Here, we propose three central goals for COVID-19 vaccination campaigns: to reduce morbidity and mortality, to minimise additional economic and societal burdens related to the pandemic and to narrow unjust health inequalities. We evaluate five (...) prioritisation approaches, assess their likely impact on advancing the three goals of vaccine allocation and identify open scientific questions that may alter their outcomes. We argue that no single prioritisation approach will advance all three goals. Instead, we propose a multipronged approach that considers the risk of serious COVID-19 illness, instrumental value and the risk of transmission, and is guided by future research on COVID-19-specific clinical and vaccine characteristics. While we focus this assessment on the USA, our analysis can inform allocation in other contexts. (shrink)

A growing number of infertile couples and other individuals desiring children are seeking to fulfill their desire for parenthood transnationally through the use of donor gametes and a surrogate. The number of “fertility tourists” from developed countries to low-income countries is growing phenomenally. Indian women, too, are participating as (re)producers in these “biocrossings,” turning India into the surrogacy outsourcing capital of the world in the globalized bioeconomy of assisted reproduction. I argue for a ban on commercial egg donation and surrogacy (...) and a social-justice approach that would hold the state responsible for providing basic social goods to low-income households. I also argue for a gender-justice approach so that women would not be compelled to adopt surrogacy as a strategy for survival and upward social mobility. (shrink)

Spirituality in the workplace is gaining recognition and value among researchers, academicians, and business professionals. The aim of this paper is to examine the impact of spirituality in the workplace on job satisfaction by measuring four dimensions of spirituality in the workplace: meaningful work, sense of community, organizational values, and compassion. The impact of each dimension on job satisfaction is hypothesized. A cross-sectional survey was used to collect data from 100 payroll employees in private insurance companies in Punjab. A correlation (...) analysis showed a positive relationship between all the dimensions of spirituality in the workplace and job satisfaction. A regression analysis revealed that although all the dimensions of spirituality in the workplace are important, organizational values and a sense of community are the most important in terms of the job satisfaction level of employees. This work will help insurance companies to better understand the concept of spirituality in the workplace and its importance. Insurance companies can improve their functioning by encouraging employee spirituality in the workplace. (shrink)