@inproceedings{Kaseorg20072PD, title={2 Polygonal Dissections Dissection and reassembly}, author={Anders Kaseorg}, year={2007} }

- Published 2007

What is a set? In the late 19th century, Georg Cantor was the first to formally investigate this question, thus founding the study of set theory as a mathematical discipline. Cantor’s definition of a set consisted of two intuitive principles. The first, Extensionality, asserts that two sets are equal exactly when they have the same members; the second… CONTINUE READING

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