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  1. plato.stanford.edu › entries › possible-worldsPossible Worlds - Stanford Encyclopedia of Philosophy

    18. Okt. 2013 · Possible Worlds and Modal Logic. Although ‘possible world’ has been part of the philosophical lexicon at least since Leibniz, the notion became firmly entrenched in contemporary philosophy with the development of possible world semantics for the languages of propositional and first-order modal logic.

  2. en.wikipedia.org › wiki › Possible_worldPossible world - Wikipedia

    A possible world is a complete and consistent way the world is or could have been. Possible worlds are widely used as a formal device in logic, philosophy, and linguistics in order to provide a semantics for intensional and modal logic.

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  4. de.wikipedia.org › wiki › Mögliche_WeltMögliche Welt – Wikipedia

    Als mögliche Welt bezeichnet man eine die Logik achtende Vorstellung, wie die Realität beschaffen sein könnte – also eine logisch konsistente Gesamtheit von Vorstellungen der möglichen Sachverhalte. Eine Möglichkeitsaussage wird dann insgesamt als wahr bezeichnet, wenn sie in einer solchen Welt („in mindestens einer ...

  5. www.britannica.com › topic › possible-worldPossible world | Possible Worlds, Modal Logic, Ontology

    Learn about the concept of a possible world, a total way the universe might have been, contrasted with the actual world. Explore how philosophers have formalized and used this idea in modal logic, ontology, and theodicy.

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  6. plato.stanford.edu › entries › logic-modalModal Logic - Stanford Encyclopedia of Philosophy

    29. Feb. 2000 · In propositional logic, a valuation of the atomic sentences (or row of a truth table) assigns a truth value \ ( (T\) or \ (F)\) to each propositional variable \ (p\). Then the truth values of the complex sentences are calculated with truth tables. In modal semantics, a set \ (W\) of possible worlds is introduced.

  7. plato.stanford.edu › entries › counterfactualsCounterfactuals - Stanford Encyclopedia of Philosophy

    18. Jan. 2019 · The two key concepts in possible worlds semantics are possible worlds and accessibility spheres (or relations). Intuitively, a possible world w is simply a way the world could be or could have been. Formally, they are treated as primitive points in the set of all possible worlds W.

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    • Neil deGrasse Tyson Takes 'Cosmos' to 'Possible Worlds' on National ...
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    • Possible Worlds (2000) - IMDb
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  9. link.springer.com › chapter › 10Possible Worlds Theory: History, Approaches, and Its Relevance to...

    11. Sept. 2020 · Learn how Possible Worlds Theory, a philosophical logic framework, can be applied to analyse counterfactual historical fiction. Explore the development of the theory from Leibniz to Kripke and its relevance to narratology.

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