Author:
Wang Yongqiao,Nishimura Takashi
Abstract
AbstractIn this paper, on envelopes created by circle families in the plane, all four basic problems (existence problem, representation problem, problem on the number of envelopes, problem on relationships of definitions) are solved.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
China Scholarship Council
Japan Society for the Promotion of Science
Yokohama National University
Publisher
Springer Science and Business Media LLC
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