Results 61 to 70 of about 739,090 (133)

[[alternative]]Quantization of two-dimentional manifolds with constant

open access: yes, 2010
[[abstract]]The topological effects of some two-dimensional manifolds with constant curvature are considered here. Our study covers the cases of the sphere, the cylinder, the torus, and the Lobachevsky plane.
[[author]]Su, Shau-Yei   +3 more
core  

About global behaviour of the geodesics on hyperbolic (lobachevsky) manifolds [PDF]

open access: yes, 2017
BALCAN, Vladimir. About global behaviour of the geodesics on hyperbolic (lobachevsky) manifolds. In: Competitivitatea şi inovarea în economia cunoaşterii [online]: conf. şt. intern., 22-23 sept., 2017: Culegere de articole. Chişinău: ASEM, 2018, vol.
Balcan, Vladimir
core   +1 more source

N.I. LOBACHEVSKY AND THE FIFTH POSTULATE OF EUCLIDE

open access: yes, 2020
119-122Исследование посвящено изучению вопроса о причинах выбора Н.И. Лобачевским пятого постулата Евклида в качестве предмета научного исследования.The reported study focused on the question of the reasons for the choice of N.I.
Шакирова Л.Р.
core  

On an optical realization of the

open access: yes, 2002
We introduce and analyze the SU(1,1) geometric phase emerging in a series of discrete transformations in an optical ring cavity containing partial reflectors.
M. G. Benedict, C. Benedek
core   +1 more source

Lobachevsky University: On the Way to Be a Research Leader

open access: yes, 2016
Lobachevsky State University of Nizhni Novgorod celebrates centenary. In his interview with the Editor, the Rector of the University E.V. Chuprunov sums up its main achievements.
Editorial Article
core  

Discrete Yamabe Problem for Polyhedral Surfaces. [PDF]

open access: yesDiscrete Comput Geom, 2023
Dal Poz Kouřimská H.
europepmc   +1 more source

Statistical precursors of a strong earthquake on April 6, 2009 on the Apennine Peninsula. [PDF]

open access: yesHeliyon, 2022
Volvach AE   +6 more
europepmc   +1 more source

On the path integral in imaginary Lobachevsky space

open access: yes, 1993
The path integral on the single-sheeted hyperboloid, i.e. in D-dimensional imaginary Lobachevsky space, is evaluated. A potential problem which we call 'Kepler-problem', and the case of a constant magnetic field are also discussed.
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)   +1 more
core  

Nonrelativistic Approximation for Quasi-Planes Wave of a Spin 1 Particle in Lobachevsky Space

open access: yes, 2013
Spin 1 particle in Pauli approximation is investigated on the background of a curved space of constant negative curvature, Lobachevsky space. Nonrelativistic approximation is performed in the system of 10 equations resulted from separating the variables
Kazmerchuk, K. V., Ovsiyuk, E. M.
core  

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