Free pro-p extensions of number fields
Free pro-p extensions of number fields
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数字字段的免费 Pro-p 扩展
DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
Guillaume Perbet
中科院分区:
文献类型:
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作者:
J. Jaulent;Christian Maire;Guillaume Perbet
This paper concerns the problem of the existence of Galois extensions of algebraic number fields whose Galois groups are free pro-p groups. Let k be an algebraic number field and F = G(N |k) a free pro-p factor of the Galois group G(k(p)|k) of the maximal p-extension of k. Then N |k is a pro-p extension which is unramified outside p, i.e. F is a factor of the Galois group GΣ(k) = G(kΣ|k), where kΣ is the maximal p-extension of k which is unramified outside the set Σ of primes of k lying above p or ∞. If