100 years of Zermelo's axiom of choice: What was the problem with it? (2006)
100 years of Zermelo’s axiom of choice: What was the problem with it? Per Martin-Löf 2006 WORK IN PROGRESS Cantor conceived set theory in a sequence of six papers published in the Mathematische Annalen during the five year period 1879–1884. In the fifth of these papers, published in 1883, he stated as a law of thought (Denkgesetz) that every set can be well-ordered or, more precisely, that it is always possible to bring any well-defined set into the form of a well-ordered set. Now to call it