集聚成团 发表于 2025-3-28 16:02:48
Solvable Groups, turn out to be . (17.2). To prove this we need a purely group-theoretic fact, which is developed in (17.1) to avoid a later interruption. In (17.5) and (17.6) we shall see to what extent a solvable linear group can be put in triangular form. The result of (17.5) is essential later on, while that of轻弹 发表于 2025-3-28 22:50:10
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Survey of Rationality Properties,, K denotes an algebraically closed field. If k is an arbitrary subfield of K, we are interested in the closed subgroups of GL(., K) which are defined by polynomials with coefficients in k. Some general theory is developed in §34, to be followed by a discussion of special fields (finite, real, p-adi巧思 发表于 2025-3-29 13:09:48
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