Of the various accounts of negation that have been offered by logicians in the history of Western logic, that of negation as cancellation is a very distinctive one, quite different from the explosive accounts of modern "classical" and intuitionist logics, and from the accounts offered in standard relevant and paraconsistent logics. Despite its ancient origin, however, a precise understanding of the notion is still wanting. The first half of this paper offers one. Both conceptually and historically, the account of negation (...) as cancellation is intimately connected with connexivist principles such as ¬( ¬). Despite this, standard connexivist logics incorporate quite different accounts of negation. The second half of the paper shows how the cancellation account of negation of the first part gives rise to a semantics for a simple connexivist logic. (shrink)

The change in the semantics of the word ‘subject’ in the epistemological-metaphysical meaning is a conceptual development which may be observed by historiographical means in various languages: it shifts from signifying a thing itself to a cognizing being which can consider things. From this development onward, some of the differentiated senses of the term ‘subject’ have ended up narrowly linked to one another. In particular, in philosophical contexts the juridical-political subject and the epistemological-metaphysical subject coalesce at the beginning of the (...) 19th century. The conceptual developments that are correlated to this linking of meanings can be traced from medieval scholasticism and the modern political tradition, through German Enlightenment to Immanuel Kant’s works, and is finally traced to some of the consequences for the current understanding of subjectivity in contemporary thought. (shrink)