issue contents
November 2019 issue
![Highlighted illustration](/a/issues/2019/06/00/graphics/coverill.gif)
Cover illustration: Crystallography has the potential to be a powerful tool in various research fields as well as in materials science. Nishiyama [Acta Cryst. (2019), A75, 798-813] makes use of magnetic space groups to derive and analyse fluid flows with chirality, called Beltrami flows, in hexagonal cases. Their invariant tori, which are tube-like surfaces wound around by streamlines, are numerically observed to form various arrangements (as shown in the cover image). Some resemble arrangements that appear in studies of rod packings or weavings in materials.
advances
research papers
foundations
research papers
![Open Access](/logos/open.png)
![Open Access](/logos/open.png)
![Open Access](/logos/open.png)
![cross.png](/logos/buttonlogos/cross.png)
![cross.png](/logos/buttonlogos/cross.png)
![Open Access](/logos/open.png)
international union of crystallography
![Open Access](/logos/open.png)
book reviews
![Open Access](/logos/open.png)
![Open Access](/logos/open.png)