Results 81 to 90 of about 6,368 (219)
On Lobachevsky's trigonometric formulae
, 2012 We elaborate on some important ideas contained in Lobachevsky's Pangeometry and in some of his other memoirs. The ideas include the following: (1) The trigonometric formulae, which express the dependence between angles and edges of triangles, are not only tools, but they are used as the basic elements of any geometry.
openaire +3 more sources
N.I. LOBACHEVSKY AND THE FIFTH POSTULATE OF EUCLIDE [PDF]
, 2017 Исследование 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
About global behaviour of the geodesics on hyperbolic (lobachevsky) manifolds [PDF]
, 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
Russian National Branding: Between Cultural Archetypes and Marketing Strategies
RUDN Journal of Studies in Literature and JournalismThe communicative landscape in contemporary Russia demonstrates a marked turn towards national cultural traditions, folklore, and classical art. Unlike the often opportunistic campaigns in popular culture, branding and marketing communications, due to ...
Anton N. Fortunatov +3 more
doaj +1 more source
AIP Advances, 2016 Using the envelope-function approximation, the single-particle states of electrons and holes in spherical GaN nanocrystals embedded in different amorphous dielectric matrices (SiO2, Al2O3, HfO2 and Si3N4) have been calculated.
A. A. Konakov +6 more
doaj +1 more source
Infrared Drying of Seeds in a Fluidized Bed
Сельскохозяйственные машины и технологии, 2018 Infrared drying (IR) has found wide application mainly in the food industry. Seeds of cereal crops are dried mainly by a convection method using shaft, column and bunker dryers.
Ya. P. Lobachevsky, S. A. Pavlov
doaj +1 more source
N.I. LOBACHEVSKY AND SCHOOL GEOMETRY COURSE
, 2020 99-102В статье рассмотрены исторические предпосылки возникновения и концепция Н.И. Лобачевского построения школьного курса геометрии, ее связь с современными взглядами на школьный учебник геометрии.The article considers historical preconditions and the ...
Орлов В.В.
core
ON THE 3-TRANSITIVITY OF TRANSFORMATION GROUP OF THE LOBACHEVSKY PLANE IN THE BELTRAMI-KLEIN MODEL [PDF]
, 2017 In this paper the transformation group of the Lobachevsky plane in the Beltrami-Klein model that extends the group of motions is considered. One property of this group analogous to the 3-transitivity is established.6-
Нигматуллина Лейсан Ильшатовна
core
Lobachevsky geometry and modern nonlinear problems
, 2014 This monograph presents the basic concepts of hyperbolic Lobachevsky geometry and their possible applications to modern nonlinear applied problems in mathematics and physics, summarizing the findings of roughly the last hundred years.
Popov, Andrey
core +1 more source
РегионологияIntroduction. The development of the radio-electronic industry is a priority for Russia's technological leadership, necessitating modern tools for assessing the innovative potential of its regions.
Sergei N. Yashin +3 more
doaj +1 more source