The Problem of Identity of the Subject in the Performative Interpretation of Cartesian Cogito

The paper is devoted to the problem of identity of the subject in the performative interpretation of the Cartesian cogito, proposed by the Finnish logician J. Hintikka. This research focuses on the concept of cogito as a performative act of thinking and language. A performative act is considered as an attempt to assert one's own existence from the point of view of the identical entity that performs this act. In order to get the deepest and most complete picture of the problem of identity of the subject, described in a number of articles Hintikka, it is also necessary to address the criticism of this interpretation, proposed by analytical phenomenologists. Thus, on the basis of Hintikka himself, as well as his followers and critics, it is possible to delineate the boundaries within which we can describe all the necessary conditions for asserting the identity of the subject in the phenomenon of the Cartesian cogito.