Direct methods of solving crystal structures / edited by Henk Schenk.

"Published in cooperation with NATO Scientific Affairs Division."

"Proceedings of a NATO Advanced Study Institute/18th Course of the International School of Crystallography on Direct Methods of Solving Crystal Structures, held April 18-29, 1990, in Erice, Sicily, Italy"--T.p. verso.

Includes bibliographical references and index.

An Elementary Introduction to Direct Methods H. Schenk. Structure Factor Algebra: Structure Invariants and Seminvariants G.M. Sheldrick. Structure Invariants and Origin Definition H. Krabbendam. The Sayre Equation M.W. Woolfson. The Cochran Distribution M.W. Woolfson. Determinational Inequalities Lead to Triplet and Quartet Relationships H.A.Hauptman. The Calculation of Normalized Structure Factors and of Triplet Invariants D. Viterbo. Starting Set Determination P.T. Beurskens. Symbolic Addition H. Schenk. Tangent Formula, Tangent Refinement and Multisolution Methods M.W. Woolfson. Quartets and Other Phase Relationships H. Schenk. The Joint Probability Distribution of Three Structure Factors Leading to a Distribution for the Triplet Phase Sum R. Peschar. Some Applications of Probability Theory in Direct Methods S. Fortier, and others The Neighborhood Principle and the Extension Concep rH.A. Hauptman. The Method of Representations of Structure Seminvariants: The General Background C. Giacovazzo. Introduction to Maximum Entropy G. Bricogne. Direct Methods Packages in 1990 C.J. Gilmore. Patterson Methods P.Tollin. Optimal Symbolic Phase Determination R.Peschar, and others Random Approaches to the Phase Problem M.W. Woolfson. 27 additional articles. Index.