ABSTRACT
Husserl's phenomenological enquiry into the transcendental constitution of the origins of the ideal formations proper to mathematical and scientific objects reveals that the evidence of all the meaning formations belonging to a science such as geometry presupposes the link between intentional history and actual history. Husserl's analysis of the essential connection between these two presuppositions and the discovery of geometry is but the first step in his account of the constitution of the historicity of geometry as a science, a constitution whereby geometry's ideal objectivity becomes the property of many individuals. The historical a priori at issue in Husserl's last works therefore concerns both the historicity of transcendental subjectivity's original production of the ideal meaning formations that form the basis of a science such as geometry and the transcendental conditions of possibility that constitute such a science with the status of a "historical fact", that is, of something that is tradition and at the same time a handing-down.
