489 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Netherlands Institute for Radio AstronomyNL23 papers
- Belarusian State UniversityBY14 papers
- Leibniz Institute for Astrophysics PotsdamDE14 papers
- Polish Academy of SciencesPL14 papers
- Thüringer Landessternwarte TautenburgDE14 papers
- University of ManchesterGB14 papers
- University of WarsawPL14 papers
- Leiden UniversityNL13 papers
- Centre National de la Recherche ScientifiqueFR12 papers
- Radboud University NijmegenNL12 papers
- Rutherford Appleton LaboratoryGB12 papers
- Bielefeld UniversityDE11 papers
13 papers · 1 filter
Properties of metal-insulator transition and electron spin relaxation in GaN:Si
A. Wolos, Z. Wilamowski, M. Piersa +4
We investigate properties of doping-induced metal-insulator transition in GaN:Si by means of electron spin resonance and Hall effect. While increasing the doping concentration, Si-…
Rashba field in GaN
A. Wolos, Z. Wilamowski, C. Skierbiszewski +4
We discuss problem of Rashba field in bulk GaN and in GaN/AlGaN two-dimensional electron gas, basing on results of X-band microwave resonance experiments. We point at large differe…
Geometry of free cyclic submodules over ternions
Hans Havlicek, Andrzej Matras, Mark Pankov
Given the algebra of ternions (upper triangular matrices) over a commutative field we consider as set of points of a projective line over the set of all fre…
Inverses, Powers and Cartesian products of topologically deterministic maps
Michael Hochman, Artur Siemaszko
We show that if (X,T) is a topological dynamical system with is deterministic in the sense of Kamiski, Siemaszko and Szymaski then T^{-1} and the product system need not be determi…
Metric characterization of apartments in dual polar spaces
Mark Pankov
Let be a polar space of rank and let , be the polar Grassmannian formed by -dimensional singular subspaces of . The corres…
Counting Berg partitions
Artur Siemaszko, Maciej P. Wojtkowski
We call a Markov partition of a two dimensional hyperbolic toral automorphism a Berg partition if it contains just two rectangles. We describe all Berg partitions for a given hyper…
The affine Weyl group symmetry of Desargues maps and of the non-commutative Hirota-Miwa system
Adam Doliwa
We study recently introduced Desargues maps, which provide simple geometric interpretation of the non-commutative Hirota--Miwa system. We characterize them as maps of the A-type ro…
On the algebraic independence of Hamiltonian characteristic classes
Swiatoslaw Gal, Jarek Kedra, Aleksy Tralle
We prove that Hamiltonian characteristic classes defined as fibre integrals of powers of the coupling class are algebraically independent for generic coadjoint orbits.
On nondegenerate coupling forms
J. Kedra, A. Tralle, A. Woike
The aim of the present paper is to investigate new classes of symplectically fat fibre bundles. We prove a general existence theorem for fat vectors with respect to the canonical i…
Isometric embeddings of Johnson graphs in Grassmann graphs
Mark Pankov
Let be an -dimensional vector space () and let be the Grassmannian formed by all -dimensional subspaces of . The corresponding Gr…
Finite Rank Bratteli Diagrams: Structure of Invariant Measures
Sergey Bezuglyi, Jan Kwiatkowski, Konstantin Medynets +1
We consider Bratteli diagrams of finite rank (not necessarily simple) and ergodic invariant measures with respect to the cofinal equivalence relation on their path spaces. It is sh…
De Sitter spacetime with torsion as physical spacetime in the vacuum
A. V. Minkevich
Homogeneous isotropic models built in the framework of the Poincaré gauge theory of gravity (PGTG) based on general expression of gravitational Lagrangian without cosmological cons…
Non-symplectic smooth circle actions on symplectic manifolds
Boguslaw Hajduk, Krzysztof Pawalowski, Aleksy Tralle
We present some methods to construct smooth circle actions on symplectic manifolds with non-symplectic fixed point sets or non-symplectic cyclic isotropy point sets. All such actio…