About 4-Isosceles Planar Sets |
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| Authors: | Changqing Xu Ren Ding |
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| Affiliation: | (1) Department of Mathematics, Hebei Normal University, Shijiazhuang 050016, People's Republic of China chqxu@263.net rending@heinfo.net, CN |
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| Abstract: | ![]()
A finite planar set is k -isosceles for k geq 3 , if every k -point subset of the set contains a point equidistant from the other two. This paper gives affirmative answers to a few open problems about 4-isosceles sets. Received August 14, 2001, and in revised form September 10, 2001. Online publication December 21, 2001. |
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