The Commission on Neutron Diffraction was established at the Moscow General Assembly in 1966. The proposal at that time is given below.

• Satisfactory detection of light atoms (particularly hydrogen)
• The detection and description of magnetic architecture
• The study of crystal dynamics from inelastic scattering data

It is considered that there are several ways in which these aims can be directly advanced and that there is a substantial need for action at the present time in these various directions.

You are welcome to contact MaThCryst at the address mathcryst@iucr.org . Be sure to turn off HTML composition in your mail client, otherwise your message may be automatically treated as spam.

If you do not get an answer in a few days, most likely your message has not been received because of the severe anti-spam filters we are obliged to use as a mesure against the flood of junk mails. In that case, write to the address below or send a fax to +91-542-2368707.

https://blogs.iucr.net/crystalmath/

The MaThCryst Commission runs a general purpose mailing list open to everybody who wishes to be informed about forthcoming meetings and schools, and to follow discussions and exchanges of ideas.

Since its beginning, the IUCr MaThCryst commission has organized a series of schools on Crystallography. In this page we collect some didactic material that is used frequently in our schools. Other material specific to some schools is available in the corresponding school page (see our meeting page to find a complete list of our schools).

The IUCr MaThCryst commission organizes, in cooperation with other IUCr commissions, Satellite Conferences and Schools on Crystallography. School are of two types:

• general schools, targetting young scientists (PhD students, post-docs) or researchers from different fields who need to deepen their formation in mathematical and theoretical crystallography;
• thematic schools, devoted to introducing more specific and advanced topics.

We try to alternate the two types of schools, on the basis of the availability of the lecturers.

The following pages aim at presenting in a simple but rigorous way some of the "hot topics" of MaThCryst. This is essentially a cooperative "on-going" project which exploits the dynamic nature of the Internet to improve itself on the basis of the feedback from the readers. Do not hesitate to send us your comments.

• Dr. Vitaly Kurlin, University of Liverpool, U.K. (consultant, 2021-2023)
• Dr. Dillip K. Pradhan, National Institute of Technology Rourkela, India (consultant, 2017-2023)
• Prof. Leopoldo Suescun, Universidad de la Republica, Uruguay (member 2014-2021, chair 2021-2023)
• Dr. Hamilton Barbosa Napolitano, Ciencias Exatas e Tecnologicas, Universidade Estadual de Goias, Brazil (member, 2021-2023)
• Dr. Denis Gratias, IRCP, Chimie-ParisTec, France (member, 2017-2021)
• Prof.

MaThCryst forthcoming activities

• International School on Fundamental Crystallography and Workshop on Rietveld Refinement Analysis (ISFC-2026) February 2026, Rourkela (India)
• Fourteenth basic training course on symmetry and group theory, July 2026, Tsukuba (Japan)

MaThCryst recent activities

• Thirteenth basic training course