Ragnar Freij
Senior University Lecturer
Senior University Lecturer
T302 Dept. Mathematics and Systems Analysis
Full researcher profile
https://research.aalto.fi/...
Email
ragnar.freij@aalto.fi
Phone number
+358504780996
Research groups
- Algebra and Discrete Mathematics, Senior University Lecturer
Publications
Secret Sharing in the Rank Metric
Johan Vester Dinesen, Eimear Byrne, Ragnar Freij-Hollanti, Camilla Hollanti
2025
ISIT 2025 - 2025 IEEE International Symposium on Information Theory, Proceedings
Perfectly-Private Analog Secure Aggregation in Federated Learning
Delio Jaramillo-Velez, Charul Rajput, Ragnar Freij, Camilla Hollanti, Alexandre Graell i Amat
2025
2025 IEEE Information Theory Workshop (ITW)
Simplex inequalities of order and chain polytopes of recursively defined posets
Teemu Lundström, Ragnar Freij
2025
Order: a journal on the theory of ordered sets and its applications
Two dimensional faces of order and chain polytopes
Teemu Lundström, Ragnar Freij, Aki Mori
2025
The Electronic Journal of Combinatorics
Function-Correcting Codes for Locally Bounded Functions
Charul Rajput, B. Sundar Rajan, Ragnar Freij, Camilla Hollanti
2025
2025 IEEE Information Theory Workshop (ITW)
f-vector inequalities for order and chain polytopes
Ragnar Freij-Hollanti, Teemu Lundström
2024
Mathematica Scandinavica
Combinatorial Derived Matroids
Ragnar Freij-Hollanti, Relinde Jurrius, Olga Kuznetsova
2023
Electronic Journal of Combinatorics
Toward the Capacity of Private Information Retrieval from Coded and Colluding Servers
Lukas Holzbaur, Ragnar Freij-Hollanti, Jie Li, Camilla Hollanti
2022
IEEE Transactions on Information Theory
Private Information Retrieval from Colluding and Byzantine Servers with Binary Reed-Muller Codes
Perttu Saarela, Matteo Allaix, Ragnar Freij-Hollanti, Camilla Hollanti
2022
2022 IEEE International Symposium on Information Theory, ISIT 2022
Cyclic flats of binary matroids
Ragnar Freij-Hollanti, Matthias Grezet, Camilla Hollanti, Thomas Westerbäck
2021
Advances in Applied Mathematics