一类曲线的定义域（英文）

Let K be a finitely generated field extension of an algebraically closed field k and C : f(x) = ayn be a curve over K, where char(k) - n, f(x) 2 k[x]. When n > 4, a 62 Kn and f has at least three simple zeros, the curve C is not defined over k.     

现代汉语类义语素与语义范畴的显性表达

现代汉语词汇系统中存在着大量类义语素。它们既能体现为一整类语义范畴的上位概念,又能作为构词成分出现在表示该语义范畴下位概念的词语中。按照"下位概念=种差 上位概念"的逻辑定义方式可以把汉族人认知客观世界所形成的语义范畴显性地标志出来。并且,现代汉语语义范畴的显性表达方式在意义表达的经济性、符号认知的便捷性等方面都占据着显著优势。     

Species concepts and biodiversity in Trichoderma and Hypocrea：from aggregate species to species clusters？

Trichoderma/Hypocrea is a genus of soil-borne or wood-decaying fungi containing members important to mankind as producers of industrial enzymes and biocontrol agents against plant pathogens, but also as opportunistic pathogens of immuno-compromised humans. Species identification, while essential in view of the     

图书种册的概念、数学模型及种唯一性判定方法

既便数字化也同样存在的图书种册问题是图书馆学教学空白点,它直接影响集成系统功能实现和多馆数据合并时重复数据的清除,必须从概念、数学模型和种唯一性判定方法等方面加以解决。