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International Union of Crystallography
Commission on Mathematical and Theoretical Crystallography

Universidad Nacional Mayor de San Marcos

International School on Fundamental Crystallography
Seventh MaThCryst school in Latin America

Lima, Peru, 15-19 November 2021

The Commission on Mathematical and Theoretical Crystallography is strongly committed to promote education in all the fundamental aspects of crystallography that nowadays are overlooked in common University courses. This mission is accomplished through a series of meetings in a wide range of regions. In november 2021 we organize a school in Lima following the previous schools in Havana, followed by schools in Montevideo, in Uberlândia, in La Plata. in Havana and in Bogotá.

The school was originally planned in November 2020, but due to the COVID19 outbreak in Latin America it has moved to November 2021.



Universidad Nacional Mayor de San Marcos


Morning session (3:30 hours):
Lectures 8:30 - 10:00
Coffee break: 10:00 10:30
Lectures 10:30 - 12:30
Lunch: 12:30 14:00
Afternoon session (4:00 hours):
Lectures 14:00 16:00
Coffee break: 16:00 16:30
Lectures 16:30 - 18:30

Scientific Program

1st Day, Monday, morning session:

8:30 - 8:40 Opening of the School
Lecturer Massimo Nespolo
Symmetry groups and types of symmetry in direct space. Bravais lattices, conventional and non-conventional unit cells. Symmetry of lattices and symmetry directions. Hermann-Mauguin symbols for point groups. Symmetry of crystallographic patterns: holohedries and merohedries. Crystal families, lattice systems and crystal systems.

1st Day: afternoon session

Lecturers Massimo Nespolo, Mois Aroyo

2nd Day, Tuesday, morning session:

Lecturer Mois Arroyo

2nd Day: afternoon session

Lecturer: Massimo Nespolo

3rd Day, Wednesday, morning session:

Lecturer Mois I. Aroyo

3rd Day: afternoon session:

Lecturer Mois I. Aroyo

4th Day, Thursday, morning session:

Lecturers Leopoldo Suescun, Arbelio Penton-Madrigal, Ernesto Estevez Rams

4th Day: afternoon session

Lecturers Leopoldo Suescun, Arbelio Penton-Madrigal, Ernesto Estevez Rams

5th Day, Friday, morning session:

Lecturer Mois I. Aroyo

5th Day: afternoon session

Lecturers Mois I. Aroyo, Leopoldo Suescun


The official language of the school is English but the presence of Spanish speaking tutors familiarized in advance with the lectures will provid assistance to those needing it by translation or answering questions on the topic.

International Program Committee

Local Organizing Committee

Poster presentations

Participants will be able to present their research highlights as posters. Abstracts of poster presentations will be made available from this website after the end of the school.


For inquiries about the scientific program, please contact . For all inquiries about the organisation, please contact Prof. Justiniano Quispe, Universidad Nacional Mayor de San Marcos, Lima .

The Organizers of the ISFC7 school will observe the basic policy of non-discrimination and affirmed the right and freedom of scientists to associate in international scientific activity without regard to such factors as citizenship, religion, creed, political stance, ethnic origin, race, colour, language, age or sex, in accordance with the Statutes of the International Council for Science. At this school no barriers will exist which could prevent the participation of bona fide scientists.

Last updated: 16th October 2019
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