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Andre Ostrak

Postdoctoral Research Fellow

JU064 ( Universitetsveien 25, Kristiansand )
9:00 - 17:00

MSc in Mathematics, University of Tartu, 2018

PhD in Mathematics, University of Tartu, 2022


Banach space geometry, Lipschitz spaces, Lipschitz-free spaces, diameter 2 properties

Privacy-enhancing technologies, AI/ML


2018 - 2022 Cybernetica - Junior Researcher

2021 - 2022 University of Tartu - Junior Researcher

2022 - 2023 Cybernetica - Researcher


Different projects at the University of Tartu on the study of the extreme structure of Banach spaces, with a focus on Lipschitz and Lipschitz-free spaces. Funded by the Estonian Research Council

Trustworthy, Energy-Aware federated DAta Lakes along the computing continuum (TEADAL). Horizon Europe Programme, financed by European Commission

Risks and their management for AI and machine learning systems: a study and educational videos (RALLI). Financed by the Estonian Information System Authority

Synthesis of machine-optimized cryptographic protocols with applications in secure machine learning systems. Financed by US Office of Naval Research

Machine learning and AI powered public service delivery (MAITT). Funded by the Estonian Research Council

Utvalgte publikasjoner

Haller, Rainis; Kaasik, Jaan Kristjan; Ostrak, Andre (2023). The Lipschitz-Free Space Over a Length Space is Locally Almost Square but Never Almost Square. Mediterranean Journal of Mathematics, 20 (1), ARTN 39. DOI: 10.1007/s00009-022-02218-9.

Ostrak, Andre (2021). On the duality of the symmetric strong diameter 2 property in Lipschitz spaces. Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A Matemáticas, 115 (2). DOI: 10.1007/s13398-021-01018-2.

Ostrak, Andre; Randmets, Jaak; Sokk, Ville; Laur, Sven; Kamm, Liina (2021). Implementing Privacy-Preserving Genotype Analysis with Consideration for Population Stratification. Cryptography, 5 (3), ARTN 21. DOI: 10.3390/cryptography5030021.

Ostrak, Andre (2020). Characterisation of the weak-star symmetric strong diameter 2 property in Lipschitz spaces. Journal of Mathematical Analysis and Applications, 483 (2), ARTN 123630. DOI: 10.1016/j.jmaa.2019.123630.

Sist endret: 11.01.2024 10:01