現代数学の系譜11 ガロア理論を読む13 [転載禁止]©5ch.io
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0413現代数学の系譜11 ガロア理論を読む
2015/05/16(土) 12:43:42.37ID:3tqJtzYJ「Galois for 21st-Century Readers Harold M. Edwards」より
In this paper, I have tried to explain the First Memoir to modern readers, going through it proposition by proposition.
The most important proposition, and the one I most emphasize, is Proposition 2, the one about which Galois wrote in the margin,
“There is something to be completed in this proof. I do not have the time”
(the sections “Proposition 2” and “Proposed Revision of Proposition 2” below).
My interpretation suggests how Galois might have stated and proved it given a little more time.
This revised Proposition 2, combined with Proposition 1 (which I also revise, but only to make the statement Galois surely intended),
contains the equivalent of what is now called the fundamental theorem of Galois theory.
I do not assume that the reader has ready access to the First Memoir and have tried to make the explanations stand on their own,
but serious readers would be foolish to be satisfied with my rewarmed version of Galois’s theory.
The original, however flawed and incomplete itmay be, is indisputably one of the most valuable and insightful documents in the history of mathematics.
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