References

1. Wittgenstein, L., Anscombe, G.E.M.: Philosophical Investigations. Blackwell, Oxford (1997)

2. Putnam, H.: The Meaning of “Meaning”. Language, Mind, and Knowledge. Minnesota Studies in the Philosophy of Science, vol. 7, pp. 131-193. University of Minnesota Press, Minneapolis (1975)

3. Putnam, H.: Indispensability arguments in the philosophy of mathematics (chap. 9). In: Putnam, H. (eds.) Philosophy in an Age of Science: Physics, Mathematics and Skepticism. Harvard University Press, Cambridge

4. Wittgenstein, L.: Tractatus Logico-Philosophicus. Routledge and Kegan Paul, London (1951)