Conţinutul numărului revistei |
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56 0 |
SM ISO690:2012 KABANOVA, E.. On countable nondiscrete fields without nontrivial convergent sequences. In: Mathematical Notes, 1992, vol. 52, pp. 798-801. ISSN 0001-4346. DOI: https://doi.org/10.1007/BF01236775 |
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Mathematical Notes | ||||||
Volumul 52 / 1992 / ISSN 0001-4346 /ISSNe 1573-8876 | ||||||
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DOI:https://doi.org/10.1007/BF01236775 | ||||||
Pag. 798-801 | ||||||
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In [l] there is given a list of certain open questions in the theory of topological fields. Among them there is A. V. Arkhangel'skii's question: is there a countable nondiscrete topological field without nontrivial convergent sequences? In this paper we give the answer: in any countable field, in any maximal nondiscrete field topology there exist no nontrivial sequences. We mention that from [2] there follows the existence of a countable Abelian topological group without convergent sequences, while in [3] the following theorem is proved: on any Abelian group of cardinality m there exists a precompact topology without convergent sequences. |
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