Gyorgy Geher
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+44 (0) 118 378 5012
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Leverhulme Fellow
Office
Room 213Building location
MathematicsAreas of interest
- Riemann-Hilbert approach
- Mathematical Physics
- Orthogonal polynomials
- Random matrices
- Preserver Problems
Websites/blogs
Publications
- Gehér, G. , Titkos, T. , Virosztek, D. (2023) Isometric rigidity of Wasserstein tori and spheres. Mathematika , 69 (1). pp. 20-32. ISSN: 2041-7942 | doi: https://dx.doi.org/10.1112/mtk.12174
- Gehér, G. , Titkos, T. , Virosztek, D. (2022) The isometry group of Wasserstein spaces: the Hilbertian case. Journal of the London Mathematical Society , 106 (4). pp. 3865-3894. ISSN: 1469-7750 | doi: https://dx.doi.org/10.1112/jlms.12676
- Gehér, G. and Mori, M. (2022) The structure of maps on the space of all quantum pure states that preserve a fixed quantum angle. International Mathematics Research Notices , 2022 (16). pp 0. ISSN: 1687-0247 | doi: https://dx.doi.org/10.1093/imrn/rnab040
- Brightmore, L. , Gehér, G. , Its, A. , Korepin, V. , Mezzadri, F. , Mo, M. , Virtanen, J. (2020) Entanglement entropy of two disjoint intervals separated by one spin in a chain of free fermion. Journal of Physics A: Mathematical and Theoretical , 53 ISSN: 1751-8113 | doi: https://dx.doi.org/10.1088/1751-8121/ab9cf2
- Gehér, G. , Tarcsay, Z. , Titkos, T. (2020) Maps preserving absolute continuity and singularity of positive operators. New York Journal of Mathematics , 26 pp. 129-137. ISSN: 1076-9803
- Gehér, G. , Titkos, T. , Virosztek, D. (2020) Isometric study of Wasserstein spaces - the real line. Transactions of the American Mathematical Society , 373 (8). pp. 5855-5883. ISSN: 1088-6850 | doi: https://dx.doi.org/10.1090/tran/8113
- Geher, G. and Semrl, P. (2020) Coexistency on Hilbert space effect algebras and a characterisation of its symmetry transformations. Communications in Mathematical Physics , 379 pp. 1077-1112. ISSN: 1432-0916 | doi: https://dx.doi.org/10.1007/s00220-020-03873-3
- Geher, G. (2020) Symmetries of projective spaces and spheres. International Mathematics Research Notices , 2020 (7). pp. 2205-2240. ISSN: 1073-7928 | doi: https://dx.doi.org/10.1093/imrn/rny100
- Geher, G. , Titkos, T. , Virosztek, D. (2019) On isometric embeddings of Wasserstein spaces - the discrete case. Journal of Mathematical Analysis and Applications , 480 (2). ISSN: 0022-247X | doi: https://dx.doi.org/10.1016/j.jmaa.2019.123435
- Geher, G. and Titkos, T. (2019) A characterisation of isometries with respect to the Levy-Prokhorov metric. Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie V , XIX (2). pp. 655-677. | doi: https://dx.doi.org/10.2422/2036-2145.201702_011
- Geher, G. and Semrl, P. (2018) Isometries of Grassmann spaces, II. Advances in Mathematics , 332 (9). pp. 287-310. ISSN: 1090-2082 | doi: https://dx.doi.org/10.1016/j.aim.2018.05.012
- Chen, H. , Geher, G. , Liu, C. , Molnár, L. , Virosztek, D. , Wong, N. (2017) Maps on positive definite operators preserving the quantum χ2α-divergence. Letters in Mathematical Physics , 107 (12). pp. 2267-2290. ISSN: 0377-9017 | doi: https://dx.doi.org/10.1007/s11005-017-0989-0
- Geher, G. (2017) Wigner's theorem on Grassmann spaces. Journal of Functional Analysis , 273 (9). pp. 2994-3001. ISSN: 0022-1236 | doi: https://dx.doi.org/10.1016/j.jfa.2017.06.011
- Gehér, G. (2016) Is it possible to determine a point lying in a simplex if we know the distances from the vertices?. Journal of Mathematical Analysis and Applications , 439 (2). pp. 651-663. ISSN: 0022-247X | doi: https://dx.doi.org/10.1016/j.jmaa.2016.03.024
- Gehér, G. (2015) Asymptotic limits of operators similar to normal operators. Proceedings of the American Mathematical Society , 143 (11). pp. 4823-4834. ISSN: 0002-9939 | doi: https://dx.doi.org/10.1090/proc/12632
- Gehér, G. (2014) An elementary proof for the non-bijective version of Wigner's theorem. Physics Letters A , 378 (30-31). pp. 2054-2057. ISSN: 0375-9601 | doi: https://dx.doi.org/10.1016/j.physleta.2014.05.039