一般英语语法词典及书籍均把英语名词分为两类:可数名词和不可数名词。传统的语法家认为:英语可数名词和不可数名词可以用基数词one或more than one及它们相当的词来加以区别;能被它们修饰的就是可数名词,否则就是不可数名词。然而,在...一般英语语法词典及书籍均把英语名词分为两类:可数名词和不可数名词。传统的语法家认为:英语可数名词和不可数名词可以用基数词one或more than one及它们相当的词来加以区别;能被它们修饰的就是可数名词,否则就是不可数名词。然而,在具体的语言环境中,这一原则远远不能说明英语名词的实际用法。这是因为所谓的可数、不可数名词都能互相转化,越过自己的“边境”,成为对方的“临时成员”。展开更多
It is known that there is a very closed connection between the set of non-isomorphic indecomposable basic Nakayama algebras and the set of admissible sequences.To determine the cardinal number of all nonisomorphic ind...It is known that there is a very closed connection between the set of non-isomorphic indecomposable basic Nakayama algebras and the set of admissible sequences.To determine the cardinal number of all nonisomorphic indecomposable basic Nakayama algebras,we describe the cardinal number of the set of all t-length admissible sequences using a new type of integers called quasi-binomial coefficients.Furthermore,we find some intrinsic relations among binomial coefficients and quasi-binomial coefficients.展开更多
文摘一般英语语法词典及书籍均把英语名词分为两类:可数名词和不可数名词。传统的语法家认为:英语可数名词和不可数名词可以用基数词one或more than one及它们相当的词来加以区别;能被它们修饰的就是可数名词,否则就是不可数名词。然而,在具体的语言环境中,这一原则远远不能说明英语名词的实际用法。这是因为所谓的可数、不可数名词都能互相转化,越过自己的“边境”,成为对方的“临时成员”。
基金supported by Shandong Provincial Natural Science Foundation of China (Grant No.ZR2011AM005)National Natural Science Foundation of China (Grant No.10931006)Shanghai Municipal Natural Science Foundation (Grant No.12ZR1413200)
文摘It is known that there is a very closed connection between the set of non-isomorphic indecomposable basic Nakayama algebras and the set of admissible sequences.To determine the cardinal number of all nonisomorphic indecomposable basic Nakayama algebras,we describe the cardinal number of the set of all t-length admissible sequences using a new type of integers called quasi-binomial coefficients.Furthermore,we find some intrinsic relations among binomial coefficients and quasi-binomial coefficients.