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This paper gives negative answers to problems 35, 40, and 41 of Turan about Birkhoff interpolation.
Negative Answers to Problems 35, 40, and 41 of Turan
【摘 要】
：
This paper gives negative answers to problems 35, 40, and 41 of Turan about Birkhoff interpolation.
【机 构】
：
ComputingCenterAcademiaSinicaBeijing100080PRC
【出 处】
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中国科学：数学英文版
【发表日期】
：
1993年11期
【基金项目】
：
Project supported by the National Natural Science Foundation of China
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