THE FREGEAN AXIOM AND EXTENSIONALITY
Languages of publication
The aim of this communication is to prove that commonly used principle of exensionality (according to which the logical value of a complex sentence depends only on the logical values of sentences that are the parts of it) implies the fregean axiom. Moreover it has been presented in what sense the non-fregean logic is extensional.
Publication order reference
CEJSH db identifier