Color-coding point group and space group diagrams
نویسندگان
چکیده
منابع مشابه
Time-Dependent Real-Space Renormalization Group Method
In this paper, using the tight-binding model, we extend the real-space renormalization group method to time-dependent Hamiltonians. We drive the time-dependent recursion relations for the renormalized tight-binding Hamiltonian by decimating selective sites of lattice iteratively. The formalism is then used for the calculation of the local density of electronic states for a one dimensional quant...
متن کاملConstructing Diagrams Representing Group Motions
Certain domains, such as military activities and weather phenomena, are characterized by a large number of individual elements moving in a field, either in pursuit of an organized activity in groups at different levels of aggregation (military action), or subject to underlying physical forces that cluster different elements in different groups with common motion (weather). Reasoning about pheno...
متن کاملTrivalent Diagrams, Modular Group and Triangular Maps
The aim of the paper is to give a preliminary overview of some of the results of the thesis prepared by the author. We propose a bijective classification of the subgroups of the modular group by pointed trivalent diagrams. Conjugacy classes of those subgroups are in one to one correspondence with unpointed trivalent diagrams. We also give in the form of generating series, the number of those tr...
متن کاملThe Permutation Group and Young Diagrams
The permutation, or symmetric, group, Sn is interesting at least partly because it contains subgroups isomorphic to all groups of order ≤ n. This result is known as “Cayley’s theorem”. It is also of great value in tensor analysis as the means to describe the tensor space in terms of symmetries under permutations of indicies. Here, we develop a diagrammatic approach to determining the irreducibl...
متن کاملGroup Sparse Coding
Bag-of-words document representations are often used in text, image and video processing. While it is relatively easy to determine a suitable word dictionary for text documents, there is no simple mapping from raw images or videos to dictionary terms. The classical approach builds a dictionary using vector quantization over a large set of useful visual descriptors extracted from a training set,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations and Advances
سال: 2019
ISSN: 2053-2733
DOI: 10.1107/s0108767319099756