{"ID":2847003,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2511.00888","arxiv_id":"2511.00888","title":"A Simple Logic of Cohesive Group Agency","abstract":"We propose a structure to represent the social fabric of a group. We call it the `cohesion network' of the group. It can be seen as a graph whose vertices are strict subgroups and whose edges indicate a prescribed `pro-social behaviour' from one subgroup towards another. In social psychology, pro-social behaviours are building blocks of full-blown cooperation, which we assimilate here with `group cohesiveness'. We then define a formal framework to study cohesive group agency. To do so, we simply instantiate pro-social behaviour with the more specific relation of `successful assistance' between acting entities in a group. The relations of assistance within a group at the moment of agency constitute the social fabric of the cohesive group agency. We build our logical theory upon the logic of agency \"bringing-it-about\". We obtain a family of logics of cohesive group agency, one for every class of cohesion networks.","short_abstract":"We propose a structure to represent the social fabric of a group. We call it the `cohesion network' of the group. It can be seen as a graph whose vertices are strict subgroups and whose edges indicate a prescribed `pro-social behaviour' from one subgroup towards another. In social psychology, pro-social behaviours are...","url_abs":"https://arxiv.org/abs/2511.00888","url_pdf":"https://arxiv.org/pdf/2511.00888v1","authors":"[\"Nicolas Troquard\"]","published":"2025-11-02T11:06:54Z","proceeding":"cs.LO","tasks":"[\"cs.LO\",\"cs.MA\"]","methods":"[]","has_code":false}