In the region of Asia Minor and above all in Smyrna up to the third and fourth centuries the tension between Jews and Christians is palpable. In the Martyrdom of Polycarp and in the Martyrdom of Pionius, it is clear that the social ascendency of Judaism in Smyrna was exploited on various occasions until it became a co-protagonist in the persecution against the Christians. Despite the gradual separation and differentiation between Jews and Christians, both the New Testament and subsequent Christian (...) literature in Smyrna report that no self-understanding of Christianity in relation to its deepest roots escaped its necessary confrontation with Judaism. (shrink)

The aim of this paper is to present the close connection which can be established between the notion of mode of presentation (Frege) and ground (Peirce) in order to show that they are used to explain why signs can give us knowledge -nonconventional knowledge- about the world.