In Multi Agent Systems it is often the case that individual preferences are not compatible and coalitions compete to achieve a given result. The paper presents a language to talk about the conflict between coalitional choices and it expresses deontic notions to evaluate them. We will be specifically concerned with cases where the collective perspective is at odds with the individual perspective.

“Coalition of the willing” is a phrase that we hear invoked with frequency in world politics. Significantly, it is generally accompanied by claims to moral responsibility. Yet the label commonly used to connote a temporary, purpose-driven, self-selected collection of states sits uneasily alongside these assertions of moral responsibility.This article explores how the informal nature of such associations should inform judgments of moral responsibility. I begin by briefly recounting what I call a model of institutional moral agency in order to explain (...) why it seems theoretically and practically problematic to talk about the moral responsibilities of informal associations. I then focus on coalitions of the willing as prominent, and challenging, examples of such associations, before raising misgivings about my own rather stark distinction if it means that accounts of moral responsibility must be reduced to the members—or potential members—of such coalitions in a way that neglects the moral significance of their acting together. Prompted by these concerns, I explore arguments by Virginia Held and Larry May about moral responsibility in relation to informal associations and identify insights that can be taken from these positions to refine our expectations and evaluations of the actions associated with such collectivities. Finally, I consider the particular implications of these insights in relation to the widely espoused duty to intervene to rescue vulnerable populations. (shrink)

The Coalition of Immokalee Workers (CIW) has successfully combated modern-day slavery by transforming the ways that over a dozen major brands, including Taco Bell, Subway, and Wal-Mart, manage their supply chains. The CIW’s efforts over more than 20 years have effectively stopped enslavement practices, including abuses such as wage theft and peonage indebtedness. We conducted a field ethnography, interviews, and archival analyses to understand this success. We find that the CIW employs a decentered, egalitarian, and ensemble approach to their multiplicities (...) of alliances by collectively “animating” themselves and their partners through ensemble leadership. This combination of alliances, along with worker-driven monitoring, brings life to the CIW motto “We are all leaders.” Translating this motto into daily practice is how the CIW virtually eradicates enslavement practices in corporate supply chains. (shrink)

This essay engages Chandra Mohanty, M. Jacqui Alexander, and María Lugones in a “plurilogue” to elaborate and exhibit a method that animates the differential mode of Women of Color politics while rendering more acute the strategies each scholar offers against the racialized, gendered oppressions of colonialism and global capitalism. Ella Shohat describes “a multifaceted plurilogue” as a “dissonant polyphony” that “links different yet co-implicated constituencies and arenas of struggle” (Shohat 2001, 2). The emphasis on reading differences within Women of Color (...) theorizing resists the homogenizing tendency of superficial engagement that glosses Women of Color scholarship as a unified genre of thought. A plurilogue thus pursues dissimilarities to clarify the conceptual interventions made within Women of Color theorizing and the relationship among the different patterns of oppression that each intervention exposes. Plurilogued engagements bring these conceptual strategies and understandings of multiple oppressions together, not to resolve or rank them, but to more effectively ascertain the complexities of, and varied coalitional strategies for, resisting the racialized, heteropatriarchal oppressions of global capitalism and colonialism. (shrink)

In this reply to an article of Toni Erskine's, I argue that coalitions of the willing are moral agents. They can therefore bear responsibility in their own right.

In the paper, we study the dynamics of coalitional ability by proposing an extension of coalition logic (CL). CL allows one to reason about what a coalition of agents is able to achieve through a joint action, no matter what agents outside of the coalition do. The proposed dynamic extension is inspired by dynamic epistemic logic, and, in particular, by action models. We call the resulting logic coalition action model logic (CAML), which, compared to CL, includes additional modalities for coalitional (...) action models. We investigate the expressivity of CAML, and provide a complexity characterisation of its model checking problem. (shrink)

Although in theory social justice is considered as a core dimension of agroecological transitions, alternative food initiatives related to agroecology have been criticised for their exclusionary practices based on important social and economic biases. In this article, we adopt the lens of political intersectionality to study two cases of Agroecology-oriented Food Redistribution Coalitions in Spain that emerged to address the rising levels of food insecurity during the COVID-19 pandemic. We find that the coalitions represent a convergence of diverse (...) social struggles, placing intersectionally marginalized groups at the centre of their activism. However, we also uncover that coalition members participate in different ways depending on their socioeconomic profiles, which could perpetuate inequalities in organizational practices. One major point of tension is the need to balance the goal of providing access to healthy and sustainable food with the affordability of such produce. This leads to the adoption of hybrid food networks that include conventionally produced food. We also highlight that while the predominance of women in these coalitions reflects the unequal distribution of food-related care work in society, the collectivization of such work through AFRCs practices points to a transformation of gender relations. Territorialized alliances between actors from urban and rural settings and between urban centers and peripheries are established through the coalitions. However, such networks fall short on involving large numbers of agroecology-oriented initiatives and providing direct encounters between consumers and producers. Overall, the article underscores the importance of addressing intersecting inequalities within alternative food initiatives and argues that intersectional coalitions offer an intriguing example of how to promote such understanding and pave the way towards (more) just agroecological transitions. (shrink)

Özkal-Sanver (Theory Decis 59:193–205, 2005) studies stability and efficiency of partitions of agents in two-sided matching markets in which agents can form partitions by individual moves only, and a matching rule determines the matching in each coalition in a partition. In this study, we present the relationship between stability and efficiency of partitions that is analyzed for several matching rules and under various membership property rights codes, now allowing coalitional moves.

This article begins by examining the importance that critical intercultural dialogues have within the Modernity/Coloniality Research Program toward reaching an alternative geopolitics and body-politics of knowledge, in order to raise the question whether the colonial difference creates conditions for dialogical situations that bring together critiques of coloniality emerging from different experiences of coloniality. The answer it offers is twofold. On the one hand, if one imagines such situations to be communicative exchanges à la Bakhtin that put logos at the center, (...) given what is termed the coloniality of language and speech, the possibility of such exchanges is feasible only as an abstract gesture. On the other hand, when one faces the complications of the erasure of dialogue produced by coloniality, the kind of decolonial communicative relations that seem possible among people thinking and acting from the colonial difference are less conscious or agential than emotive. By articulating the relations between coalitional methodologies and a global sense of connection the article proposes a nondialogical theory of decolonial communication: a way of orienting ourselves with a sense of permeability and recognition of being on the same side that doesn't need to be politically motivated but is always active. (shrink)

We introduce three natural collective variants of the well-known axiom of desirability, which require that if the contributions of a first coalition are at least as large as the contributions of a second coalition, then the payoff in the first coalition should be as large as the payoff in the second coalition. These axioms are called coalitional desirability and average coalitional desirability. The third variant, called uniform coalitional desirability, applies only to coalitions with the same size. We show that (...) coalitional desirability is very strong: no value satisfies simultaneously this axiom and efficiency. To the contrary, the combination of either average coalitional desirability or uniform coalitional desirability with efficiency and additivity characterizes the equal division value. (shrink)

In 2022, the Camden Coalition Medical-Legal Partnership began providing civil and criminal legal services to substance use disorder patients at Cooper University Health Care’s Center for Healing. This paper discusses early findings from the program’s first year on the efficacy of the provision of criminal-legal representation, which is uncommon among MLPs and critical for this patient population. The paper concludes with takeaways for other programs providing legal services in an addiction medicine setting.

Dyadic play fighting occurs in many species, but only humans are known to engage in coalitional play fighting. Dyadic play fighting is hypothesized to build motor skills involved in actual dyadic fighting; thus, coalitional play fighting may build skills involved in actual coalitional fighting, operationalized as forager lethal raiding. If human psychology includes a motivational component that encourages engagement in this type of play, evidence of this play in forager societies is necessary to determine that it is not an artifact (...) of agricultural or industrial conditions. We examine whether coalitional play fighting appears in the hunter-gatherer record and includes motor skills used in lethal raiding. Using the ethnographic record, we generated a list of motor patterns regularly used in forager warfare. Then, using Murdock’s Ethnographic Atlas, we identified 100 culture clusters containing forager societies and searched the ethnographic records of these societies for descriptions of coalitional play fighting, operationalized as contact games played in teams. Resulting games were coded for the presence of eight motor patterns regularly used in forager lethal raiding. Although play does not tend to be systematically documented in the hunter-gatherer literature, sufficiently detailed descriptions of coalitional play were found for 46 of the 100 culture clusters: all 46 exhibited coalitional play using at least one of the predicted motor patterns; 39 exhibited coalitional play using four or more of the eight predicted motor patterns. These results provide evidence that coalitional play fighting occurs across a diverse range of hunter-gatherer cultures and habitats, regularly recruits motor patterns used in lethal raiding, and is not an artifact of agricultural or industrial life. This is a first step in a new line of research on whether human male psychology includes motivations to engage in play that develops the deployment of coordinated coalitional action involving key motor patterns used in lethal raiding. (shrink)

We propose a method to associate a coalitional interval game with each strategic game. The method is based on the lower and upper values of finite two-person zero-sum games. Associating with a strategic game a coalitional interval game we avoid having to take either a pessimistic or an optimistic approach to the problem. The paper makes two contributions to the literature: It provides a theoretical foundation for the study of coalitional interval games and it also provides, studies, and characterizes a (...) natural method of associating coalitional interval games with strategic games. (shrink)

This paper addresses the question of whether and how public action via civil society and/or government can meaningfully shape industry-wide corporate responsibility behaviour. We explore how, in principle, ICR can come about and what conditions might be effective in promoting more ethical behaviour. We propose a framework to understand attempts to develop more responsible behaviour at an industry level through processes of negotiation and coalition building. We suggest that any attempt to meaningfully influence ICR would require stakeholders to possess both (...) power and legitimacy; moreover, magnitude and urgency of the issue at stake may affect the ability to influence ICR. The framework is applied to the retail banking industry, focusing on post-crisis experiences in two countries—Spain and the UK—where there has been considerable pressure on the retail banking industry by civil society and/or government to change behaviours, especially to abandon unethical practices. We illustrate in this paper how corporate responsibility at the sector level in retail banking is the product of context-specific processes of negotiation between civil society and public authorities, on behalf of customers and other stakeholders, drawing on legal and other institutions to influence industry behaviour. (shrink)

We use Concurrent Game Models (CGM) in which simple conditional promises are assigned the role of negotiation steps aiming to represent the formation of temporary coalitions and their agendas. By transforming these extended CGMs into equivalent CGMs with incomplete information, established methods for rational synthesis become enabled. The interpretation of promises is compatible with that of announcements as in dynamic epistemic logics. To accommodate requirements on plays that are written wrt the runs of the original model, we use temporal (...) projection that hides negotiation steps. (shrink)

We add a limited but useful form of quantification to Coalition Logic, a popular formalism for reasoning about cooperation in game-like multi-agent systems. The basic constructs of Quantified Coalition Logic (QCL) allow us to express such properties as "every coalition satisfying property P can achieve φ" and "there exists a coalition C satisfying property P such that C can achieve φ". We give an axiomatisation of QCL, and show that while it is no more expressive than Coalition Logic, it is (...) nevertheless exponentially more succinct. The complexity of QCL model checking for symbolic and explicit state representations is shown to be no worse than that of Coalition Logic, and satisfiability for QCL is shown to be no worse than satisfiability for Coalition Logic. We illustrate the formalism by showing how to succinctly specify such social choice mechanisms as majority voting, which in Coalition Logic require specifications that are exponentially long in the number of agents. (shrink)

There are several ways to quantify over public announcements. The most notable are reflected in arbitrary, group, and coalition announcement logics, with the latter being the least studied so far. In the present work, we consider coalition announcements through the lens of group announcements, and provide a complete axiomatisation of a logic with coalition announcements. To achieve this, we employ a generalisation of group announcements. Moreover, we study some logical properties of both coalition and group announcements that have not been (...) studied before. (shrink)

The objective of this paper is to study stable coalition structures in symmetric majority games. We assume that players deviate from a coalition structure to another to maximize their power given by the Owen power index. We introduce three myopic core concepts and one farsighted stability concept, the farsighted vNM stable set. Our main result is that the pessimistic core, the largest myopic core, coincides with some farsighted vNM stable set for any number of players. Moreover, we show that a (...) coalition structure belongs to the pessimistic core and the farsighted vNM stable set if and only if it contains an exact majority coalition. (shrink)

Cohesion may be based primarily on interpersonal ties or rely instead on the connection between member and group, while groups may cohere temporarily based on the immediate alignment of interests among members or may be tied together more permanently by socio-emotional bonds. Together, these characteristics define four prototypical group types. Cliques and coalitions are based primarily on dyadic ties. Groups of comrades or colleagues rely instead on the connection of members to the group for cohesion, which reduces the marginal (...) cost of increasing group size. The strong glue of socio-emotional cohesion binds cliques and comrades, while coalitions and groups of colleagues are often based on weaker forms of cohesion. The mix of strong and weak adhesives and the greater scalability offered by the member-group bond provide the building blocks for assembling very large societies without overtaxing the social brain. (shrink)

Kimberlé Williams Crenshaw ends her landmark essay “Mapping the Margins: Intersectionality, Identity Politics, and Violence against Women of Color” with a normative claim about coalitions. She suggests that we should reconceptualize identity groups as “in fact coalitions,” or at least as “potential coalitions waiting to be formed.” In this essay, I explore this largely overlooked claim by combining philosophical analysis with archival research I conducted at the Gay, Lesbian, Bisexual and Transgender Historical Society Archive in San Francisco (...) about Somos Hermanas, the solidarity project of the Alliance Against Women’s Oppression, based in the San Francisco Women’s Building (1984–90). I extend my analysis into the present by drawing on the oral history and published works of Carmen Vázquez, a key organizer in both Somos Hermanas and the Women’s Building. I argue that conceptualizing identities as in fact coalitions—as complex, internally heterogeneous unities constituted by their internal differences and dissonances and by internal as well as external relations of power—enables us to organize effective political coalitions that cross existing identity categories and to pursue a liberatory politics of interconnection. (shrink)

In the wake of continued structural asymmetries between women of color and white feminisms, this essay revisits intersectional tensions in Catharine MacKinnon’s Toward a Feminist Theory of the State while exploring productive spaces of coalition. To explore such spaces, we reframe Toward a Feminist Theory of the State in terms of its epistemological project and highlight possible synchronicities with liberational features in women-of-color feminisms. This is done, in part, through an analysis of the philosophical role “method” plays in MacKinnon’s argument, (...) and by reframing her critique of juridical neutrality and objectivity as epistemic harms. In the second section, we sketch out a provisional coalitional theory of liberation that builds on MacKinnon’s feminist epistemological insights and aligns them with decolonizing projects in women-of-color feminisms, suggesting new directions and conceptual revisions that are on the way to coalition. (shrink)

A large body of research links testosterone and cortisol to male-male competition. Yet, little work has explored acute steroid hormone responses to coalitional, physical competition during middle childhood. Here, we investigate testosterone, dehydroepiandrosterone, androstenedione, and cortisol release among ethnically Chinese boys in Hong Kong, aged 8–11 years, during a soccer match and an intrasquad soccer scrimmage, with 63 participants competing in both treatments. The soccer match and intrasquad soccer scrimmage represented out-group and in-group treatments, respectively. Results revealed that testosterone showed (...) no measurable change. DHEA increased during both treatments in the majority of participants and the degree of change had no relation to independent variables or covariate measures. Most boys experienced androstenedione increases during match play, but no significant differences during the intrasquad soccer scrimmage competitions. The magnitude of change differed significantly between treatments and was positively associated with age. These latter findings suggest boys’ androstenedione responses may be sensitive to competitor type. For most subjects, cortisol significantly increased during match play, decreased during the intrasquad soccer scrimmage, and differed significantly between treatments, suggesting each treatment promoted a different psychological state among competitors. Cortisol/DHEA molar ratio decreased during the intrasquad scrimmage, suggestive of a more relaxed mental state. These data shed new light on potential proximate mechanisms associated with coalitional competition among prepubescent boys, with relevance to adrenarche and life history theory. (shrink)

Since 1993, coalition governments have replaced the 38-year-long, one-party dominance of the Liberal Democratic Party (the LDP) in Japan. Except for one year, from 1993 to 1994, the LDP has remained a key party in successive governing coalitions, but the dynamics of party competition has been completely transformed since the period of the LDP's dominance. Although the LDP has survived to form a variety of coalitions ranging from a minority to an over-sized majority, since 1998 the Democratic Party (...) of Japan (DPJ) has continued to counter the LDP governments. The transformation of party systems in Japan accompanies the party switching of legislators and the mergers, breakups, extinctions, and formations of parties. In this regard, the Japanese case provides an interesting example to show how parties attempt to change the dynamics of policy competition by switching and reorganizing. Parties also attempt to shift their policy positions to attract public support and to gain a competitive edge in government formation. Using expert survey data about the policy positions of parties, this study explicates the dynamics involved in the reorganization of parties and the formation of governments. (shrink)

Can Kant conceive of a legal order established between legal orders? By introducing the “coalition of the willing states” as “a surrogate” for a full-blown world republic, he surely claims he can.After a brief rehearsal of Kant’s argument, the paper turns to a critical examination of its most principled argument: as republican states are polities that have already left behind the state of nature, they cannot be required to do so once more. By focusing on a contemporary understanding of ‘surrogate (...) sovereignty’ as ‘shared sovereignty,’ this paper argues that shared sovereignty presupposes classical unified sovereignty; that what Kant suggests as a surrogate is not shared sovereignty; and that, therefore, either Kant’s idea does not help much, or it is in need of serious re-interpretation.The remainder of the paper only suggests the beginnings of this reinterpretation. In the case of an international legal order, we see representational processes of anticipation and retrospection at work. If one takes these temporal cross-overs into account, it is really a false start to conceive of such an order as ‘a legal order of legal orders.’ Since various domestic legal orders acknowledge the encompassing legal order as ‘the legal order common between them,’ they do not give up sovereignty when they decide to comply with the international legal order. They exercise it, but in a new mix of constituent and constitutional power. (shrink)

Can Kant conceive of a legal order established between legal orders? By introducing the “coalition of the willing states” as “a surrogate” for a full-blown world republic, he surely claims he can.After a brief rehearsal of Kant’s argument, the paper turns to a critical examination of its most principled argument: as republican states are polities that have already left behind the state of nature, they cannot be required to do so once more. By focusing on a contemporary understanding of ‘surrogate (...) sovereignty’ as ‘shared sovereignty,’ this paper argues that shared sovereignty presupposes classical unified sovereignty; that what Kant suggests as a surrogate is not shared sovereignty; and that, therefore, either Kant’s idea does not help much, or it is in need of serious re-interpretation.The remainder of the paper only suggests the beginnings of this reinterpretation. In the case of an international legal order, we see representational processes of anticipation and retrospection at work. If one takes these temporal cross-overs into account, it is really a false start to conceive of such an order as ‘a legal order of legal orders.’ Since various domestic legal orders acknowledge the encompassing legal order as ‘the legal order common between them,’ they do not give up sovereignty when they decide to comply with the international legal order. They exercise it, but in a new mix of constituent and constitutional power. (shrink)

This paper addresses the Arrovian social choice problem. Our focus is the role of positive responsiveness, which requires social judgments to be strongly monotonic with respect to individual judgments. We clarify the structure of decisive coalitions associated with collective choice rules that satisfy positive responsiveness and Arrow's axioms. Transitivity of social preferences is relaxed to quasi‐transitivity or acyclicity.

There is a gap between the methods and techniques discussed in planning and management literature, and practitioners’ experiences of agricultural research and extension. This gap is attributable to the fact that outcomes of research and extension (R&E) initiatives are shaped by the interactions of contending coalitions that form around issues or approaches and promote or oppose them. This framework is used to elucidate the development of technologies and methodologies in the past. Implications are drawn for future planning and management, (...) based on seeing the use of methods and techniques in terms of the broader social and political contexts of research and development. (shrink)

while conducting a routine patrol, Peter Liang, a Chinese American New York City police officer, accidently fired his gun in the stairwell of the Louis Pink projects of Brooklyn, New York. The bullet ricocheted off the wall and struck Akai Gurley, a 28-year-old black father, who had entered the stairwell with his friend after giving up on the notoriously malfunctioning elevators. According to reports, the bullet "tore through [Akai's] body, fractured his third rib, nicked his sternum, and pierced his heart (...) and diaphragm."1 Akai immediately fell onto the cold concrete floors as blood poured from his chest. His friend ran to his aid and began to pump his chest while Officer Liang debated whether he should report the... (shrink)

We add a limited but useful form of quantification to Coalition Logic, a popular formalism for reasoning about cooperation in game-like multi-agent systems. The basic constructs of Quantified Coalition Logic (QCL) allow us to express such properties as “every coalition satisfying property P can achieve φ” and “there exists a coalition C satisfying property P such that C can achieve φ”. We give an axiomatisation of QCL, and show that while it is no more expressive than Coalition Logic, it is (...) nevertheless exponentially more succinct. The complexity of QCL model checking for symbolic and explicit state representations is shown to be no worse than that of Coalition Logic, and satisfiability for QCL is shown to be no worse than satisfiability for Coalition Logic. We illustrate the formalism by showing how to succinctly specify such social choice mechanisms as majority voting, which in Coalition Logic require specifications that are exponentially long in the number of agents. (shrink)

In his classic monograph, Social Choice and Individual Values, Arrow introduced the notion of a decisive coalition of voters as part of his mathematical framework for social choice theory. The subsequent literature on Arrow’s Impossibility Theorem has shown the importance for social choice theory of reasoning about coalitions of voters with different grades of decisiveness. The goal of this paper is a fine-grained analysis of reasoning about decisive coalitions, formalizing how the concept of a decisive coalition gives rise (...) to a social choice theoretic language and logic all of its own. We show that given Arrow’s axioms of the Independence of Irrelevant Alternatives and Universal Domain, rationality postulates for social preference correspond to strong axioms about decisive coalitions. We demonstrate this correspondence with results of a kind familiar in economics—representation theorems—as well as results of a kind coming from mathematical logic—completeness theorems. We present a complete logic for reasoning about decisive coalitions, along with formal proofs of Arrow’s and Wilson’s theorems. In addition, we prove the correctness of an algorithm for calculating, given any social rationality postulate of a certain form in the language of binary preference, the corresponding axiom in the language of decisive coalitions. These results suggest for social choice theory new perspectives and tools from logic. (shrink)

We propose a method to associate a coalitional interval game with each strategic game. The method is based on the lower and upper values of finite two-person zero-sum games. Associating with a strategic game a coalitional interval game we avoid having to take either a pessimistic or an optimistic approach to the problem. The paper makes two contributions to the literature: It provides a theoretical foundation for the study of coalitional interval games and it also provides, studies, and characterizes a (...) natural method of associating coalitional interval games with strategic games. (shrink)

One of the classic formalisms for reasoning about multi-agent coalitional ability is coalition logic. In CL it is possible to express what a coalition can achieve in the next step no matter what agents outside of the coalition do at the same time. We propose an extension of CL with dynamic operators that allow us to grant dictatorial powers to agents or to revoke them. In such a way we are able to reason about the dynamics of coalitional ability. We (...) also discuss some logical properties of the proposed formalisms and compare their relative expressive power. (shrink)

This article highlights and evaluates the role of CEPI and its contribution to global equitable access to COVID-19 vaccines through its established partnerships for vaccine development. The article adds to the understanding of how and when such partnerships can work for public health, especially under emergency citations.

María Lugones, one of the premiere figures in feminist philosophy, has at last collected some of her most famous essays, as well as some lesser-known gems, into her first book.