Extending a flexible unit-bar framework
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Hiroshi Maehara
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Article
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1992
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Elsevier Science
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English
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We prove that (1) a flexible unit-bar framework G in R" can always be extended to a rigid unit-bar framework in R", and (2) G is 'congruent' to a subgraph of a rigid unit-bar framework in R" if and only if the Euclidean distances between joints of G are all algebraic numbers. Meanwhile, it is proved