University of Warmia and Mazury in Olsztyn

output

20002026

most citedThe LOFAR Two-metre Sky Survey -- V. Second data release

489 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2019Show all

8 papers · 1 filter

nlin.SI2019★ 13 cited

The Coxeter relations and KP map for non-commuting symbols

Adam Doliwa, Masatoshi Noumi

We give an action of the symmetric group on non-commuting indeterminates in terms of series in the corresponding Mal'cev-Newmann division ring. The action is constructed from the n…

math.DG2019

On linear-quadratic Poisson pencils on trivial central extensions of semisimple Lie algebras

Andriy Panasyuk, Vsevolod Shevchishin

The paper is devoted to quadratic Poisson structures compatible with the canonical linear Poisson structures on trivial 1-dimensional central extensions of semisimple Lie algebras.…

astro-ph.IM2019★ 40 cited

The NANOGrav Program for Gravitational Waves and Fundamental Physics

A. Brazier, S. Chatterjee, T. Cohen +11

We describe the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) and its efforts to directly detect and study gravitational waves and other synergistic physi…

math.CA2019★ 1 cited

Oscillation of solutions of LDE's in domains conformally equivalent to unit disc

Igor Chyzhykov, Janne Gröhn, Janne Heittokangas +1

Oscillation of solutions of $f^{(k)} + a_{k - 2} f^{(k - 2)} + \dots + a_{1} f^{'} + a_{0} f = 0$ is studied in domains conformally equivalent to the unit disc. The results are applied, for e…

math.OC2019★ 10 cited

Solution of Linear Fractional Systems with Variable Coefficients

Ivan Matychyn, Viktoriia Onyshchenko

The paper deals with the initial value problem for linear systems of FDEs with variable coefficients involving Riemann--Liouville and Caputo derivatives. The technique of the gener…

nlin.SI2019★ 7 cited

Non-commutative double-sided continued fractions

Adam Doliwa

We study double-sided continued fractions whose coefficients are non-commuting symbols. We work within the formal approach of the Mal'cev-Neumann series and free division rings. We…

nlin.SI2019★ 3 cited

Quadrangular sets in projective line and in Moebius space, and geometric interpretation of the non-commutative discrete Schwarzian Kadomtsev-Petviashvili equation

Adam Doliwa, Jarosław Kosiorek

We present geometric interpretation of the discrete Schwarzian Kadomtsev-Petviashvili equation in terms of quadrangular set of points of a projective line. We give also the corresp…

math.RA2019★ 1 cited

Affine and Projective Planes Linked with Projective Lines over Certain Rings of Lower Triangular Matrices

Edyta Bartnicka, Metod Saniga

Let $T_{n} (q)$ be the ring of lower triangular matrices of order $n \geq 2$ with entries from the finite field $F (q)$ of order $q \geq 2$ and let $^{2} T_{n} (q)$ denote its free left mo…