Our results to date give us the tools for analysing the main concepts of set theory, the mathematical theory of the infinitely large. What is important for this task is above all to distinguish between individual and specific universality, to eliminate the concept of a set in defining natural numbers, to grasp the connection between cardinal and ordinal number, to acknowledge the result of analysing the principle of complete induction and to dissolve the symbolism of irrational numbers.
Kaufmann, F. (1978). Set theory, in The infinite in mathematics, Dordrecht, Springer, pp. 114-150.
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