Dear Readers, you must have certainly noticed the very important Special Issue, no. 1, 2024, dedicated to the 75th anniversary of Professor Jan Sokołowski. This Special Issue contains original, cutting-edge papers from the domains of interest and work of Jan Sokołowski, notably shape optimization and control theory. The paper are authored by the world-leading specialists in the field, and provide fresh new results in respective problem areas. we are convinced that this issue, and the papers therein, shall gain widespread recognition and popularity.

Note also the issue 2, 2004, which has been recently added. The next one, 3, 2024, is in the final stage of preparations.