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Volume :38 Issue : 149 2020      Add To Cart                                                                    Download

From Modal Logic to the Idea of the Possible Worlds (in Arabic).

Auther : Malika Medkour

Modal logic is part of traditional logic, yet it witnessed several transformations in terms of necessity, possibility and, contingency.
Modal logic led to the rise of new modes; the modes that transformed into Deontic Modality, Epistemic Modality, and Belief Modality paved the way for new types of modes to appear. This transformation benefited from the development of mathematics, physics and language. Furthermore, it engaged with several problematics that shed light on what has become known as ‘possible worlds,’ one of the widely discussed subjects in the field of contemporary logic.The idea of ‘possible worlds’ assumes that multiple worlds exist. Among them, only one is considered the real world, while the rest are possible worlds. The concept relies on modal logic that follows from this principle: the proposition is necessary if it is true in all worlds, possible if true in at least one world, impossible if it is not true in any possible worlds, and contingent if true in some but not all worlds.
The Problematic:
How does research in the field of logic reflect the idea of ‘possible worlds?’
What are the problematics concerning logic that arose?
The researcher employs an analytical historical method to examine the origins of the idea of ‘possible worlds’ and the role that mathematics and logic plays in its development and expansion.
Key words: Modal Logic - Necessary - Possible - Impossible - Possible Worlds.

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