1. In references to Husserl’s works I have used original dates to indicate historical
2. development even though English translations, where available, are cited.
3. S. Bachelard, A Study of Husserl’s Formal and Transcendental Logic (Northwestern University Press, Evanston, 1968)
4. J. Cavaillès, Sur la logique et la théorie de la science (Vrin, Paris, 1947)
5. S. Centrone, Logic and Philosophy of Mathematics in the Early Husserl (Springer, Dordrecht, 2010)