Hello everyone. I am Ondra, a student from the Czech Republic. I just finished my master's, and now I am on ICMAB for 14 days to get familiar with the work of Mr. Gervasi and his team. I am planning to start a cotutelle with UAB and UK in Prague next year. My focus of the study is placed on numerical simulations of Photonic crystals, their band structures, and topological properties. In my free time, I do calisthenics, climbing and I like to study nutrition. I hope I will learn a lot and be a good help to the scientific community.