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Matrix inversion and solution of equations J S Rollett
Application of matrix operations J S Rollett
Algebra of least squares J S Rollett
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Acta Cryst angle applied approximation atomic parameter average axis Bragg angle calculation centre centric centrosymmetric Chapt coefficients column coordinates correct Cruickshank crystal derived diagonal electron density elements error estimated expression flow diagram formula FORTRAN Fourier Fourier series function Gauss elimination given gives Hauptman Hauptman and Karle heavy atom Hence intensity isomorphous iteration latent roots latent vectors least-squares matrix method multiple non-centrosymmetric normal distribution normal equations normal matrix normalised observational equations obtained operations output Patterson Patterson function peak phase determination plane points probability reciprocal lattice reciprocal space refinement reflections rotation routine scale factor scattering factor Sect set of signs sign relationships space-group spurrite statistical structure factors subroutine summation symbols symmetric matrix symmetry Table temperature factor transform triclinic unit cell values variance weights Wilson Woolfson zero zone