Zobrazeno 1 - 10
of 96
pro vyhledávání: '"B. L. Davies"'
Publikováno v:
Computer Aided Surgery. 6:329-339
Publikováno v:
Journal of Physics A: Mathematical and General. 33:1631-1646
We discuss the decomposition of the regular representation of crystallographic space groups into elementary band representations. It is shown that the decomposition is in general not unique. In particular, we discuss some orthorhombic space groups in
Publikováno v:
Journal of Mathematical Physics. 40:2757-2781
We discuss Bloch and Wannier functions related to oscillator eigenfunctions. In particular, we construct complete sets of mutually orthogonal Bloch and Wannier functions. We show that they can be expressed in several ways in terms of theta functions
Publikováno v:
Physical Review B. 58:7681-7688
Publikováno v:
Journal of Mathematical Physics. 39:2437-2454
We discuss Bloch and Wannier functions composed of Gaussian orbitals. The fact that the Bloch functions may be expressed in terms of θ-functions is used to discuss them in detail. We study not only their analyticity properties, but also features of
Publikováno v:
Acta Crystallographica Section A Foundations of Crystallography. 53:456-466
Left- and double-coset decompositions of space groups are systematically analysed by putting the emphasis on the introduction of special auxiliary groups. An algorithm is tailored to exploit the specific structure of space groups. The new results are
Publikováno v:
Journal of Physics A: Mathematical and General. 30:3573-3583
Given a free Abelian group of finite rank, canonical subgroup matrices are defined with respect to an arbitrary but fixed basis of , which uniquely determine all subgroups of of finite index. The use of these matrices allows the classification of all
Publikováno v:
Ferroelectrics. 191:1-7
An integrated package of programs has been developed to investigate the structures and representations of crystallographic space groups. The programs, written in PASCAL and C, are made user friendly by additional programs using the Oakland C-scape In
Publikováno v:
Ferroelectrics. 185:71-76
We present in a graphical form the orientational ordering of C60 molecules in eight primary domain states of the simple cubic phase and give components of material tensor properties (electrogyration, piezooptics and electrostriction) that are distinc
Publikováno v:
Physical Review B. 54:2466-2470