On minus quotients of ideal class groups of cyclotomic fields
2020 ◽
Vol 16
(09)
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pp. 2013-2026
Keyword(s):
Let [Formula: see text] be the minus quotient of the ideal class group of the [Formula: see text]th cyclotomic field. In this paper, first, we show that each finite abelian group appears as a subgroup of [Formula: see text] for some [Formula: see text]. Second, we show that, for all pairs of integers [Formula: see text] and [Formula: see text] with [Formula: see text], the kernel of the lifting map [Formula: see text] is contained in the [Formula: see text]-torsion [Formula: see text] of [Formula: see text]. Such an evaluation of the exponent is an individuality of cyclotomic fields.
1966 ◽
Vol 27
(1)
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pp. 239-247
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1990 ◽
Vol 108
(2)
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pp. 197-201
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2001 ◽
Vol 164
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pp. 133-146
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Keyword(s):
1997 ◽
Vol 49
(2)
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pp. 283-300
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Keyword(s):
1994 ◽
Vol 46
(1)
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pp. 169-183
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Keyword(s):
1979 ◽
Vol 75
◽
pp. 133-143
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Keyword(s):
1980 ◽
Vol 78
(3)
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pp. 321
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