𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the symmetry of periodic structures in two dimensions

✍ Scribed by A. Gavezzotti; M. Simonetta


Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
831 KB
Volume
12
Category
Article
ISSN
0898-1221

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


On the Dimensions of Cyclic Symmetry Cla
✍ M.R Darafsheh; M.R Pournaki πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 129 KB

The dimensions of the symmetry classes of tensors, associated with a certain cyclic subgroup of $ which is generated by a product of disjoint cycles is explicitly m given in terms of the generalized Ramanujan sum. These dimensions can also be expressed as the Euler -function and the Mobius function.

On the Asymptotics of Quantizers in Two
✍ Yingcai Su πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 English βš– 321 KB

When the mean square distortion measure is used, asymptotically optimal quantizers of uniform bivariate random vectors correspond to the centers of regular hexagons (Newman, 1982), and if the random vector is non-uniform, asymptotically optimal quantizers are the centers of piecewise regular hexagon

Symmetry, Duality, and Anholonomy of Poi
✍ Taksu Cheon; TamΓ‘s FΓΌlΓΆp; Izumi Tsutsui πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 212 KB

We analyze the spectral structure of a one-dimensional quantum mechanical system with point interaction, which is known to be parametrized by the group U (2). Based on the classification of the interactions in terms of symmetries, we show, on a general basis, how the fermion-boson duality and the sp