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- AGH University of KrakowPL17 papers
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10 papers · 1 filter
Shape maps for second order partial differential equations
O. Rossi, D. J. Saunders, G. E. Prince
We analyse the singularity formation of congruences of solutions of systems of second order PDEs via the construction of \emph{shape maps}. The trace of such maps represents a cong…
Spectral analysis of a class of Schroedinger operators exhibiting a parameter-dependent spectral transition
Diana Barseghyan, Pavel Exner, Andrii Khrabustovskyi +1
We analyze two-dimensional Schrödinger operators with the potential where and , which exhibit an abrupt change of its spectral prop…
Implicit Lagrange-Routh Equations and Dirac Reduction
Eduardo García-Toraño Andrés, Tom Mestdag, Hiroaki Yoshimura
In this paper, we make a generalization of Routh's reduction method for Lagrangian systems with symmetry to the case where not any regularity condition is imposed on the Lagrangian…
Genomic study of the Ket: a Paleo-Eskimo-related ethnic group with significant ancient North Eurasian ancestry
Pavel Flegontov, Piya Changmai, Anastassiya Zidkova +14
The Kets, an ethnic group in the Yenisei River basin, Russia, are considered the last nomadic hunter-gatherers of Siberia, and Ket language has no transparent affiliation with any…
On the utility of Robinson-Amitsur ultrafilters. II
Pasha Zusmanovich
We extend the result of arXiv:0911.5414 about embedding of ideal-determined algebraic systems into ultraproducts, to arbitrary algebraic systems, and to ultraproducts over -comp…
Variational Sequences, Representation Sequences and Applications in Physics
Marcella Palese, Olga Rossi, Ekkehart Winterroth +1
This paper is a review containing new original results on the finite order variational sequence and its different representations with emphasis on applications in the theory of var…