Inverse-closed Additive Subgroups of Fields
نویسنده
چکیده
We describe the additive subgroups of fields which are closed with respect to taking inverses. In particular, in characteristic different from two any such subgroup is either a subfield or the kernel of the trace map of a quadratic subextension of the field.
منابع مشابه
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تاریخ انتشار 2005