Nonexistence of k-bounded sobrification
Nonexistence of k-bounded sobrification
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k 界清醒不存在
DOI:
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发表时间:
2020-11
影响因子:
0.3
通讯作者:
Bin Zhao
中科院分区:
文献类型:
--
作者:
Jing Lu;Kaiyun Wang;Guohua Wu;Bin Zhao
In this paper, we will focus on k-bounded sober spaces and show the existence of a T_0 space X not admitting any k-bounded sobrification. This strengthens a result of Zhao, Lu and Wang, who proved that the canonical k-bounded sobrification does not exist. Our work provides a complete solution to a question of Zhao and Ho, and shows that unlike Sob and BSob,the category KBSob of all k-bounded sober spaces is not a reflective subcategory of the category Top_0 of all T_0 spaces. Furthermore, we introduce the notion of qk-bounded sober spaces and prove that the category KBSob is a full reflective subcategory of the category QKBSob of all qk-bounded sober spaces and continuous mappings preserving existing irreducible suprema.
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DOI:
10.1007/bfb0089911
发表时间:
1981
期刊:
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影响因子:
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作者:
P. Johnstone
通讯作者:
P. Johnstone
DOI:
10.1007/s10114-018-7535-6
发表时间:
2018-09
期刊:
Acta Mathematica Sinica, English Series
影响因子:
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作者:
Bin Zhao;Jing Lu;K. Wang
通讯作者:
Bin Zhao;Jing Lu;K. Wang
DOI:
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发表时间:
2003-04
期刊:
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影响因子:
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通讯作者:
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DOI:
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1990
期刊:
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影响因子:
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作者:
B. Davey;H. Priestley
通讯作者:
B. Davey;H. Priestley
DOI:
10.1016/j.apal.2008.06.019
发表时间:
2009-06
期刊:
Ann. Pure Appl. Log.
影响因子:
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作者:
通讯作者:
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