Abstract
This paper deals only with extensionality and intensionality in languages modelled by propositional cacluli, i.e languages (I shall call them “sentential languages”) consisting of items built by means of functors that form sentences of sentences. Now a standard way of defining extensionality and intensionality is this. Let L be a sentential language. A context P of L is extensional if and only if its logical value (truth or falsity) is a function of logical values of its constituents. Then a sentential functor is extensional if and only if it forms an extensional context. A context (functor) of L is intensional if and only if it is not extensional.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Bibliography
Carnap, R.: 1947, Meaning and Necessity, Chicago University Press, Chicago.
Tokarz, M.: 1990, ‘On the Logic of Conscious Belief’, Studia Logica XLIX, 321–332.
Whitehead, A. N. and Russell, B.: 1925, Principia Mathematica, Vol. I, 2nd ed., Cambridge University Press, Cambridge.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1994 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Woleński, J. (1994). Remarks on Extensionality and Intensionality. In: Woleński, J. (eds) Philosophical Logic in Poland. Synthese Library, vol 228. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8273-5_21
Download citation
DOI: https://doi.org/10.1007/978-94-015-8273-5_21
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-4276-7
Online ISBN: 978-94-015-8273-5
eBook Packages: Springer Book Archive