A tree has been planted in memory of Tobias Kreutz near the mathematics department at Humboldt-Universität zu Berlin, close to Adlergestell 231A in Berlin. It stands as a quiet tribute to his life, his work, and the memory he leaves with us. In addition, donations have been made to the youth center Oase Berlin in his honor. We sincerely thank everyone who contributed.

Tobias completed his PhD in 2022 at Humboldt-Universität zu Berlin under the supervision of Bruno Klingler and Laurent Fargues. Since then, he had been a postdoctoral visitor at the Max Planck Institute for Mathematics. His research focused on the interface between complex and p-adic Hodge theory, particularly on transcendental periods. In his final work, he introduced obstructions to complex Hodge structures being of geometric origin. Tobias was a valued and respected member of the mathematical community and BMS. He will be greatly missed.

- Margarita Kostré