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This paper presents a classification of generic 6-revolute jointed (6R) manipulators using homotopy class of their critical point manifold. A part of classification is listed in this paper because of the complexity of homotopy class of 4-torus. The results of this classification will serve future research of the classification and topological properties of… (More)
This paper contains some results of pentagons which can be determined by two X-rays. The results reveal this problem is more complicated.
This paper presents a mistake in work fuction algorithm of k-server conjecture. That is, the mono-tonicity of the work fuction is not always true.