In the present paper, we introduce a multi-type display calculus for dynamic epistemic logic, which we refer to as Dynamic Calculus. The displayapproach is suitable to modularly chart the space of dynamic epistemic logics on weaker-than-classical propositional base. The presence of types endows the language of the Dynamic Calculus with additional expressivity, allows for a smooth proof-theoreti...

Dynamic epistemic logic, broadly conceived, is the study of logics of information change. In this first paper, I introduce the basic logical systems for reasoning about the knowledge and beliefs of a group of agents.

This paper argues for a view described as risk-limited indulgent permissivism. term may be new to the epistemology of disagreement literature, but general position denoted has many examples. The need an domains controversial views (morals, philosophy, politics, and religion), advantages endorsing permissivism across these domains. It takes double-edge approach in articulating interpersonal beli...

Abstract Is ethics all about rights and duties, or is it living a happy, flourishing life? For millennia in the West, was way to flourish as an individual community. The qualities that enable people live are virtues, style of called Virtue Ethics. In early modern period, Ethics went out fashion began focus on right where duties demands made against others. this article I argue language has almo...

Public announcements are used in dynamic epistemic logic to model certain kinds of information change. A formula 〈ψ〉φ represents the statement that after ψ is publicly announced φ will be the case. Sometimes we want to reason about whether it is possible for φ to become true after some announcement. In order to do this an arbitrary public announcement operator ♦ can be added to an epistemic log...

The dynamic turn in Epistemic Logic is based on the idea that notions of information should be studied together with the actions that modify them. Dynamic epistemic logics have explored how knowledge and beliefs change as consequence of, among others, acts of observation and upgrade. Nevertheless, the omniscient nature of the represented agents has kept finer actions outside the picture, the mo...

One of the most attractive aspects of virtual enterprises is their agility: the inherent ability to adapt and evolve in response to changing market conditions. Evolving VirtuE is a formal framework within which such agility can be realized. Through the concepts of enterprise time, activity logging, and log mining, the recent behavior and performance of an enterprise may be studied, and correspo...