Envelopes created by sphere families in Euclidean 3-space
Authors
Takashi Nishimura
Masatomo Takahashi
Yongqiao Wang
Abstract
In this paper, on envelopes created by sphere families in Euclidean 3-space, all four basic problems (existence problem, representation problem, problem on the number of envelopes, problem on relationships of definitions) are solved.
