# Acta Crystallographica Section A

Acta Crystallographica Section A > 71 > 1 > 76 - 81

*complex*number is obtained. Instead of considering the atomic vector positions or reciprocal vectors as the fundamental...

Acta Crystallographica Section A > 71 > 1 > 111 - 113

Acta Crystallographica Section A > 71 > 1 > 3 - 8

*SHELXT*employs a novel dual‐space algorithm to solve the phase problem for single‐crystal reflection data expanded to the space group

*P*1. Missing data are taken into account and the resolution extended if necessary. All space groups in the specified Laue group are tested to find which are consistent with the

*P*1 phases. After applying the resulting origin shifts and space‐group...

Acta Crystallographica Section A > 71 > 1 > 20 - 25

Acta Crystallographica Section A > 71 > 1 > 9 - 19

Acta Crystallographica Section A > 71 > 1 > 99 - 110

Acta Crystallographica Section A > 71 > 1 > 36 - 45

Acta Crystallographica Section A > 71 > 1 > 114 - 140

Acta Crystallographica Section A > 71 > 1 > 82 - 91

**dia**(diamond),

**qtz**(quartz),

**pcu**(net of primitive cubic lattice) and

**srs**(labyrinth net of the

*G*minimal surface). Data are also given for all known pairs of nets which have edge‐transitive self‐dual tilings. Examples are given for symmetrical polycatenation of the 2‐periodic nets

**sql**(square lattice)...

Acta Crystallographica Section A > 71 > 1 > 46 - 58

Acta Crystallographica Section A > 71 > 1 > 26 - 35

Acta Crystallographica Section A > 71 > 1 > 59 - 75

*olex2.refine*, the new refinement engine which is integrated within the

*Olex2*program. Precise and clear equations are provided for every computation performed by this engine, including structure factors and their derivatives, constraints, restraints and twinning; a general overview is also given of the different components of the engine and their relation...

Acta Crystallographica Section A > 71 > 1 > 92 - 98

*Appl. Opt.*

**21**, 2758–2769]. Starting from random initial phases, after thousands of iterations the...

Acta Crystallographica Section A > 71 > 2 > 225 - 234

Acta Crystallographica Section A > 71 > 2 > 203 - 211

Acta Crystallographica Section A > 71 > 2 > 175 - 185

*W*(

_{a}*B*) is presented. When the lattice is projected onto the Coxeter plane it is noted that the maximal dihedral subgroup

_{n}*D*of

_{h}*W*(

*B*) with

_{n}*h*= 2

*n*representing the Coxeter number describes the

*h*‐fold symmetric aperiodic tilings. Higher‐dimensional cubic lattices are explicitly constructed for

*n*= 4, 5,...

Acta Crystallographica Section A > 71 > 2 > 186 - 194

*G*where Γ is the Sohncke group of the macromolecular crystal and

*G*is the continuous group of rigid‐body...