現代数学の系譜11 ガロア理論を読む14 [転載禁止]©2ch.net

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513: 現代数学の系譜11 ガロア理論を読む [] 2015/08/09(日) 12:46:39.67 ID:+PUkznvl

>>505
1977版より引用
8 What Is Algebraic Geometry?
Now that we have met some algebraic varieties. and have encountered some
of the main concepts about them. it is appropriate to ask. what is this subject
all about? What are the important problems in the field, and where is it
going?
To define algebraic geometry, we could say that it is the study of the
solutions of systems of polynomial equations in an affine or projective
n-space. In other words, it is the study of algebraic varieties.
略
One caution about working in extreme generality. There are many advantages
to developing a theory in the most general context possible. In
the case of algebraic geometry there is no doubt that the introduction of
schemes has revolutionized the subject and has made possible tremendous
advances. On the other hand, the person who works with schemes has to
carry a considerable load of technical baggage with him: sheaves, abelian
categories, cohomology, spectral sequences, and so forth. Another more
serious difficulty is that some things which are always true for varieties may
110 longer be true. For example, an affine scheme need not have finite dimension,
even if its ring is noetherian. So our intuition must be supported
by a good knowledge of commutative algebra.
In this book we will develop the foundations of algebraic geometry using
the language of schemes, starting with the next chapter.
（引用おわり）

要は、”In this book we will develop the foundations of algebraic geometry using
the language of schemes, starting with the next chapter.”ってことか・・

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