??/??/2025 [refereeing] for Open Systems and Information Dynamics journal.

18/11/2025 [preprint] Kostecki R.-P., 2025, Vaı̆nberg–Brègman geometry and quasinonexpansive operators, arXiv:2511.14873, submitted ???

30/09/2025 [conference talk] Spectral presheaves over causal logics, and vacuum algebraic q.f.t. over curved space-times: a status report, Mathematico-Physical Workshop in Kielnarowa, Wyższa Szkoła Informatykii Zarządzania w Rzeszowie, Kielnarowa.

18/09/2025 [conference talk] Topos-theoretic extension of vacuum algebraic quantum field theory over curved space-times, Geometry of classical and quantum space-times. Jerzy Lewandowski Memorial Conference, Banach Center, Institute of Mathematics, Polish Academy of Sciences, Warszawa,

19/09/2025 [coediting of an article collection] Geometry of classical and quantum space-times (Jerzy Lewandowski Memorial Conference) in General Relativity and Gravitation journal. link.springer.com/collections/bacacgacba.

15–19/09/2025 [conference coorganisation] Scientific and local coorganisation of Geometry of classical and quantum space-times. Jerzy Lewandowski Memorial Conference, Banach Center, Institute of Mathematics, Polish Academy of Sciences, Warszawa, jurekmemorial.fuw.edu.pl.

22/07/2025 [conference talk] Topos-theoretic approach to vacuum algebraic quantum field theory over curved space-times, The 11th Conference of the Polish Society on Relativity, University of Wrocław, Wrocław,

13/07/2025 [conference proceeding] Kostecki R.-P., 2025, Geometry of the noncommutative and nonassociative Orlicz spaces, and continuity of the Vaı̆nberg–Brègman projections, in: Ivanov G.E., Podlipskaya O.G., Sakbaev V.Zh. (eds.), Sbornik tezisov mezhdunarodnoı̆ konferencii «Teoriya funkciı̆ i eë prilozheniya», posvyašënnoı̆ 120-letiyu so dnya rozhdeniya akademika RAN Sergeya Mikhaı̆lovicha Nikol’skogo, Moskovskiı̆ Fiziko-Tekhnicheskiı̆ Institut, Moskva, pp. 83–85. www.mathnet.ru/ConfLogos/2526/MFTI_Nikolsky_2025(13_07_25).pdf.

01/07/2025 [conference poster] Models of paraconsistent logics in spectral presheaves, 22nd European Conference on Foundations of Physics, University of Gdańsk, Gdańsk. (Joint work with Benjamin Engel.)

30/06/2025 [conference talk] Topos-theoretic approach to vacuum algebraic quantum field theory over curved space-times, 22nd European Conference on Foundations of Physics, University of Gdańsk, Gdańsk,

02–06/06/2025 [conference participation] Lee’s Fest: Quantum Gravity and the Nature of Time, Perimeter Institute for Theoretical Physics, Waterloo (online).

14–17/04/2025 [conference participation] The Quantum Information Structure of Spacetime 2025, Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Wien.

29/03/2025 [conference talk] Extended Vaı̆nberg–Brègman relative entropies, projections, and quasi-nonexpansive operators over preduals of W∗ – and JBW-algebras, Mathematical Structures in Quantum Mechanics II, Instytut Fizyki Teoretycznej i Astronomii, Uniwersytet Gdański, Gdańsk

03–18/07/2025 [invited research visit] International Centre for Theory of Quantum Technologies, University of Gdańsk. Host: Paweł Horodecki. Subject of collaboration: A new approach to Cirel’son bound and tensor products in algebraic quantum field theory.

23/01/2025 [conference proceedings] Kostecki R.-P., 2025, Geometric properties of noncommutative Orlicz spaces with p-Amemiya norms in thecontext of metric and Vaı̆nberg–Kachurovskiı̆–Brègman projections, in: Wisła M. (ed.), Function spaces 13. Conference proceedings. In memory of Henryk Hudzik and Julian Musielak. 8-12 July 2024, Poznań, Faculty of Mathematics and Computer Science, Adam Mickiewicz University, Poznań, pp. 287–306. zenodo.org/records/14996245