衍射图框架与柔性准晶
Parallelogram frameworks and flexible quasicrystals
摘要:
利用一个显式自由基,确定了一个拼接$P$的杆-关节框架$G_P$的一阶伸缩空间.应用程序给出了支撑框架和准晶框架与多重网格的意义上的德Bruijn和Beenker。特别是,我们summarizing刚性支撑模式,确定准晶框架与有限维柔性空间,并定义一个零模谱。
英文摘要:
The first-order flex space of the bar-joint framework $G_P$ of a parallelogram tiling $P$ is determined in terms of an explicit free basis. Applications are given to braced parallelogram frameworks and to quasicrystal frameworks associated with multigrids in the sense of de Bruijn and Beenker. In particular we characterise rigid bracing patterns, identify quasicrystal frameworks with finite dimensional flex spaces, and define a zero mode spectrum.
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