Symmetry, Structure, and Information in the 2021 IS4SI’s Summit

The Conference of the International Society for the Interdisciplinary Study of Symmetry, focusing on “Symmetry, Structure, and Information” is scheduled as a Contributing Event to the IS4SI 2021, the annual Summit of the International Society for the Study of Information (IS4SI). This Summit will be held online between the 12th and the 19th of September, 2021.

The Call for Submissions of Abstracts is now open. Submissions can be sent until the until 1st of May 2021, to any of the members of the Organizing Committee listed below. More information is available here.




Which contents are already done?

(updated in 09.02.2021)

Including all the subjects conceived for this site is an ongoing project that will take quite some time to accomplish, so I will detail below those which I consider to be complete (although any of them may be prone to changing):

I will include more links as soon as I finish them. Thank you for your understanding, and for your interest.

Aos utilizadores do meu site em português

Há várias páginas e conteúdos do meu site em português que não estão, actualmente, acessíveis. O url direcciona-vos para o site que estou a construir mas, gradualmente, as páginas escritas em português voltarão a estar disponíveis. Consultem por favor esta página para saberem quais.

Os links para os livros geogebra com as contruções passo-a-passo e em movimento são os seguintes:

muito obrigada pela compreensão.


this website is an ongoing project that will be updated, in the following months (and years), with contents and tutorials mostly concerning polyhedral geometry, a subject of a great personal interest to me, so much that I’ve been devoting myself to its study since 2007.

if you have any comments or suggestions to send me, you may comment any of the posts or reach me through any of my contacts.