A Lost Mathematician, Takeo Nakasawa: The Forgotten Father of Matroid Theory

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Hirokazu Nishimura, Susumu Kuroda
Springer Science & Business Media, Apr 21, 2009 - Mathematics - 236 pages

Matroid theory was invented in the middle of the 1930s by two mathematicians independently, namely, Hassler Whitney in the USA and Takeo Nakasawa in Japan. Whitney became famous, but Nakasawa remained anonymous until two decades ago. He left only four papers to the mathematical community, all of them written in the middle of the 1930s. It was a bad time to have lived in a country that had become as eccentric as possible. Just as Nazism became more and more flamboyant in Europe in the 1930s, Japan became more and more esoteric and fanatical in the same time period. This book explains the little that is known about Nakasawa’s personal life in a Japan that had, among other failures, lost control over its military. This book contains his four papers in German and their English translations as well as some extended commentary on the history of Japan during those years. The book also contains 14 photos of him or his family. Although the veil of mystery surrounding Nakasawa’s life has only been partially lifted, the work presented in this book speaks eloquently of a tragic loss to the mathematical community.

 

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Contents

The Life of Takeo Nakasawa
1
South Manchurian Railway Company 19061945
15
The Fifteen Years War 19311945
35
Mathematics around Takeo Nakasawa
57
The B1Space 145
144
On Axiomatics of Linear Dependence II The B2Space
171
On Mapping Sequences of a Projective Spectrum
223
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