根据中匈文化协定1954年执行计划,匈牙利数学家杜澜·巴尔(Tur(?)n P(?)l)院士应我国的邀讲于4月27日抵达北京,在北京和中国数学家举行了4次学术交流性质的会义(由5月5日至5月8日),后来在上海、武汉并举行了同样性质的报告会.杜澜院士讲演主要的内容如次:“分析中的一个新方法及应用”;“函数构造论的某些问题”;“塞尔凡斯特关于行列式论的—个问题”.(他所讲述的关于“分析中的一个新方法及应用”见他和讲题同一名称的著作,“函数构造 According to the 1954 Plan of Implementation of the Sino-Hungarian Cultural Agreement, the Honorary Member of the Turkish Mathematician Du Lan Bar (Turñ? N P? L) arrived in Beijing on April 27 and held a meeting with Chinese mathematicians in Beijing Held four academic exchanges of nature (from May 5 to May 8), and later in Shanghai, Wuhan and held the same nature of the report. Academician Du Lan keynote address as follows: “Analysis of A new method and application ”,“ some problems of the constructivism of the function ”,“ a problem of Selvest’s determinant ”(what he tells about“ a new method of analysis and its application ” Works with the same title as the topic, "Function Construction