{"title":"论紧凑有值可测函数空间的 Baire 特性","authors":"Alexander V. Osipov","doi":"arxiv-2409.02913","DOIUrl":null,"url":null,"abstract":"A topological space $X$ is Baire if the Baire Category Theorem holds for $X$,\ni.e., the intersection of any sequence of open dense subsets of $X$ is dense in\n$X$. One of the interesting problems in the theory of functional spaces is the\ncharacterization of the Baire property of a functional space through the\ntopological property of the support of functions. In the paper this problem is solved for the space $M(X, K)$ of all measurable\ncompact-valued ($K$-valued) functions defined on a measurable space\n$(X,\\Sigma)$ with the topology of pointwise convergence. It is proved that\n$M(X, K)$ is Baire for any metrizable compact space $K$.","PeriodicalId":501314,"journal":{"name":"arXiv - MATH - General Topology","volume":"17 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On Baire property of spaces of compact-valued measurable functions\",\"authors\":\"Alexander V. Osipov\",\"doi\":\"arxiv-2409.02913\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A topological space $X$ is Baire if the Baire Category Theorem holds for $X$,\\ni.e., the intersection of any sequence of open dense subsets of $X$ is dense in\\n$X$. One of the interesting problems in the theory of functional spaces is the\\ncharacterization of the Baire property of a functional space through the\\ntopological property of the support of functions. In the paper this problem is solved for the space $M(X, K)$ of all measurable\\ncompact-valued ($K$-valued) functions defined on a measurable space\\n$(X,\\\\Sigma)$ with the topology of pointwise convergence. It is proved that\\n$M(X, K)$ is Baire for any metrizable compact space $K$.\",\"PeriodicalId\":501314,\"journal\":{\"name\":\"arXiv - MATH - General Topology\",\"volume\":\"17 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - MATH - General Topology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.02913\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - MATH - General Topology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.02913","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
On Baire property of spaces of compact-valued measurable functions
A topological space $X$ is Baire if the Baire Category Theorem holds for $X$,
i.e., the intersection of any sequence of open dense subsets of $X$ is dense in
$X$. One of the interesting problems in the theory of functional spaces is the
characterization of the Baire property of a functional space through the
topological property of the support of functions. In the paper this problem is solved for the space $M(X, K)$ of all measurable
compact-valued ($K$-valued) functions defined on a measurable space
$(X,\Sigma)$ with the topology of pointwise convergence. It is proved that
$M(X, K)$ is Baire for any metrizable compact space $K$.