Recent publications

Haller, Rainis; Kaasik, Jaan Kristjan; Ostrak, Andre. Separating diameter two properties from their weak-star counterparts in spaces of Lipschitz functions. arXiv:2404.11430
Cobollo, Christian; Isert, Daniel; López-Pérez, Ginés; Martín, Miguel; Perreau, Yoël; Quero, Alicia; Quilis, Andrés; Rodríguez-Vidanes, Daniel L.; Rueda Zoca, Abraham. Banach spaces with small weakly open subsets of the unit ball and massive sets of Daugavet and Δ-points. arXiv:2309.03610
Abrahamsen, Trond Arnold; Aliaga, Ramon J.; Lima, Vegard; Martiny, Andre; Perreau, Yoël; Prochazka, Antonin; Veeorg, Triinu. A relative version of Daugavet-points and the Daugavet property. arXiv:2306.05536
Abrahamsen, Trond Arnold; Aliaga, Ramon J.; Lima, Vegard; Martiny, Andre; Perreau, Yoël; Prochazka, Antonin; Veeorg, Triinu. Delta-points and their implications for the geometry of Banach spaces. arXiv:2303.00511
Martin, Miguel; Perreau, Yoël; Rueda Zoca, Abraham. Diametral notions for elements of the unit ball of a Banach space. arXiv:2301.04433
Haller, Rainis; Ostrak, Andre; Põldvere, Märt. Diameter two properties for spaces of Lipschitz functions. arXiv:2205.13287
Veeorg, Triinu. Daugavet- and Delta-points in spaces of Lipschitz functions. arXiv:2206.03475

Haller, Rainis; Langemets, Johann; Perreau, Yoël; Veeorg, Triinu. (2024) Unconditional bases and Daugavet renormings. Journal of Functional Analysis. DOI: 10.1016/j.jfa.2024.110421
Langemets, Johann; Lõo, Marcus; Martin, Miguel; Rueda Zoca, Abraham (2024). Slicely countably determined points in Banach spaces. Journal of Mathematical Analysis and Applications. DOI: 10.1016/j.jmaa.2024.128248
Nygaard, Olav; Põldvere, Märt; Troyanski, Stanimir; Viil, Tauri (2024). Strictly convex renormings and the diameter 2 property. Studia Mathematica. DOI: 10.4064/sm221216-28-8

Avilés, Antonio; Ciaci, Stefano; Langemets, Johann; Lissitsin, Aleksei; Rueda Zoca, Abraham (2023). Transfinite almost square Banach spaces. Studia Mathematica. DOI: 10.4064/sm220517-4-11
Ciaci, Stefano (2023). Locally almost square Banach lattices. Rev. Real Acad. Cienc. Exactas Fis. Nat. Ser. A-Mat. DOI: 10.1007/s13398-023-01434-6
Ciaci, Stefano (2023). On the transfinite symmetric strong diameter two property. DOI: 10.1007/s00009-023-02483-2
Ciaci, Stefano; Langemets, Johann; Lissitsin, Aleksei (2023). A characterization of Banach spaces containing ℓ1(κ) via ball-covering properties. Israel Journal of Mathematics. DOI: 10.1007/s11856-022-2363-x
Haller, Rainis; Kaasik, Jaan Kristjan; Ostrak, Andre (2023). The Lipschitz-free space over length space is locally almost square but never almost square. Mediterr. J. Math. DOI: 10.1007/s00009-022-02218-9
Kaasik, Jaan Kristjan; Veeorg, Triinu (2023). Weakly almost square Lipschitz-free spaces. Journal of Mathematical Analysis and Applications. DOI: 10.1016/j.jmaa.2023.127339
Veeorg, Triinu (2023). Characterizations of Daugavet points and delta-points in Lipschitz-free spaces. Studia Mathematica. DOI: 10.4064/sm220207-30-4

Ciaci, Stefano; Langemets, Johann; Lissitsin, Aleksei (2022). Attaining strong diameter two property for infinite cardinals. Journal of Mathematical Analysis and Applications. DOI: 10.1016/j.jmaa.2022.126185
Haller, Rainis; Leo, Nikita; Zavarzina, Olesia (2022). Two new examples of Banach spaces with a plastic unit ball. Acta et Commentationes Universitatis Tartuensis de Mathematica. DOI: 10.12697/ACUTM.2022.26.07
Leo, Nikita (2022). Plasticity of the unit ball of c and c0. Journal of Mathematical Analysis and Applications. DOI: 10.1016/j.jmaa.2021.125718

Haller, Rainis; Langemets, Johann; Lima, Vegard; Nadel, Rihhard; Rueda Zoca, Abraham (2021). On Daugavet indices of thickness. Journal of Functional Analysis. DOI: 10.1016/j.jfa.2020.108846
Haller, Rainis; Pirk, Katriin; Veeorg, Triinu; (2021). Daugavet-and Delta-points in absolute sums of Banach spaces. Journal of Convex Analysis. JCA28
Langemets, Johann; Pirk, Katriin (2021). Stability results of diametral diameter two properties. Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A Matemáticas. DOI: 10.1007/s13398-021-01038-y

Abrahamsen, Trond Arnold; Haller, Rainis; Lima, Vegard; Pirk, Katriin (2020). Delta- and Daugavet-points in Banach spaces. Proceedings of the Edinburgh Mathematical Society. DOI: 10.1017/S0013091519000567
Abrahamsen, T. A.; Becerra Guerrero, J.; Haller, R.; Lima, V.; Põldvere, M. (2020). Banach spaces where convex combinations of relatively weakly open subsets of the unit ball are relatively weakly open. Studia Mathematica. DOI: 10.4064/sm181016-10-1
Langemets, Johann (2020). Symmetric strong diameter two property in tensor products of Banach spaces. Journal of Mathematical Analysis and Applications. DOI: 10.1016/j.jmaa.2020.124314
Langemets, Johann; Rueda Zoca, Abraham (2020). Octahedral norms in duals and biduals of Lipschitz-free spaces. Journal of Functional Analysis. DOI: 10.1016/j.jfa.2020.108557
Oja, Eve; Saealle, Natalia; Zolk, Indrek (2020). Quantitative versions of almost squareness and diameter 2 properties. Acta et Commentationes Universitatis Tartuensis de Mathematica. DOI: 10.12697/ACUTM.2020.24.09