It contains the point countable covers, the classified hypothesis of spaces, hereditarily closure preserving covers, independence, the topology of function spaces and some open problems.
綜述作者近年來(lái)在廣義度量空間理論中的研究進(jìn)展 ,內(nèi)容涉及點(diǎn)可數(shù)覆蓋、空間分類設(shè)想、遺傳閉包保持覆蓋、獨(dú)立性問(wèn)題與函數(shù)空間拓?fù)?,同時(shí)提出一些尚未解決的問(wèn)
In this paper the newest advances about point-countable covers have been given at home and abroad since 1994.
綜述了１９９４年以來(lái)國(guó)際上關(guān)于點(diǎn)可數(shù)覆蓋研究的最新進(jìn)展，涉及度量空間的確定ｓ映象、度量空間的確定緊映象和具有點(diǎn)可數(shù)ｋ網(wǎng)的空間等，列舉一些尚未解決的問(wèn)題供探討。
In this paper,we discuss when f(x) is a real valued function on E(ER 1),the sets of various discontinuous points of f(x) is or not is countable;when f(x) is semi continuous function,discontinuous points of f(x) is or not is countable.
給出當(dāng) f(x)是 E(E R1)上的實(shí)值有界半連續(xù)函數(shù)時(shí) ,f(x)的不連續(xù)點(diǎn)是至多可數(shù)的 ,從而當(dāng) f(x)為強(qiáng)半連續(xù)函數(shù)時(shí) ,則 f(x)取至多可數(shù)值。
English nouns can be practically classified into countable nouns and uncountable nouns.
英語(yǔ)名詞可以從實(shí)用的角度分為可數(shù)名詞及不可數(shù)名詞。
In this paper, the concepts of twelve countable compactness in symmetric topological molecular lattices are introduced.
在對(duì)稱拓?fù)浞肿痈裰幸?2種可數(shù)緊性的概念,著重指出了它們?cè)跇O不連通的對(duì)稱拓?fù)浞肿痈裰械膬?nèi)在聯(lián)系。