Folding rulers inside triangles
نویسندگان
چکیده
منابع مشابه
Folding Rulers inside Triangles
An l-ruler is a chain of n links, each of length l. The links, which are allowed to cross, are modelled by line segments whose endpoints act as joints. A given connguration of an l-ruler is said to fold if it can be moved to a connguration in which all its links coincide. We show that l-rulers connned inside an equilateral triangle of side 1 exhibit the following surprising alternation property...
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In This Issue In This Issue he ER is a site of both synthesis and quality control. Rejected, improperly folded proteins are destroyed by a well-characterized machinery (the ER-associated degradation [ERAD] pathway) in the cytosol and ER membrane that extracts and chews up any unfolded proteins. But the mechanisms for recognizing unfolded proteins as targets for destruction are less well charact...
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متن کاملSpherical and planar folding tessellations by kites and equilateral triangles
We prove that there is a unique folding tessellation of the sphere and an infinite family of folding tessellations of the plane with prototiles a kite and an equilateral triangle. Each tiling of this family is obtained by successive gluing of two patterns composed of triangles and kites, respectively. The combinatorial structure and the symmetry group is achieved.
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Abstract: The classification of the dihedral folding tessellations of the sphere and the plane whose prototiles are a kite and an equilateral triangle were obtained in a recent paper, [1]. Concerning to isosceles triangles the classification is much harder, which is not surprising since more angles are involved. In this paper we extend this classification presenting all the dihedral folding tes...
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ژورنال
عنوان ژورنال: Discrete & Computational Geometry
سال: 1996
ISSN: 0179-5376,1432-0444
DOI: 10.1007/bf02711495