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URN: urn:nbn:de:0030-drops-22286
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Van Ditmarsch, Hans ; French, Tim

Awareness and forgetting of facts and agents

09351.VanDitmarschHans.Paper.2228.pdf (0.1 MB)


We propose various logical semantics for change of awareness. The setting is that of multiple agents that may become aware of facts or other agents, or forget about them. We model these dynamics by quantifying over propositional variables and agent variables, in a multi-agent epistemic language with awareness operators, employing a notion of bisimulation with a clause for `same awareness'. The quantification is over all different ways in which an agent can become aware (or forget). Logics for change of awareness combine well with logics for informational change, as when a public announcement simultaneously makes you aware of an issue (`a plane just crashed on Schiphol Airport').

BibTeX - Entry

  author =	{Hans Van Ditmarsch and Tim French},
  title =	{Awareness and forgetting of facts and agents},
  booktitle =	{Information processing, rational belief change and social interaction},
  year =	{2009},
  editor =	{Giacomo Bonanno and James Delgrande and Hans Rott},
  number =	{09351},
  series =	{Dagstuhl Seminar Proceedings},
  ISSN =	{1862-4405},
  publisher =	{Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, Germany},
  address =	{Dagstuhl, Germany},
  URL =		{},
  annote =	{Keywords: Awareness, knowledge, multi-agent systems, dynamics}

Keywords: Awareness, knowledge, multi-agent systems, dynamics
Seminar: 09351 - Information processing, rational belief change and social interaction
Issue Date: 2009
Date of publication: 04.11.2009

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