Results 41 to 50 of about 12,679 (203)
Visualizing spacetimes via embedding diagrams
, 2007 It is hard to imagine curved spacetimes of General Relativity. A simple but powerful way how to achieve this is visualizing them via embedding diagrams of both ordinary geometry and optical reference geometry. They facilitate to gain an intuitive insight
Cipko, Alois +2 more
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On nonlocal symmetries for the Krichever--Novikov equation [PDF]
, 2012 We construct new infinite hierarchies of nonlocal symmetries and cosymmetries for the Krichever--Novikov equation using the inverse of the fourth-order recursion operator of the latter.Comment: 11 pages, no ...
Adler +23 more
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An enlightened aristocrat at the crossroads of countries and languages
CornovaThis paper focuses on the personality of an important aristocrat from the Age of Enlightenment, Ignác Dominik Chorynský, as a person living and acting on the border of countries and languages, creating an extensive network of social and intellectual ...
Jaroslav Stanovský
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Comments on "Casimir Effect in the Kerr spacetime with Quintessence"
, 2017 This comment is devoted to the recalculation of the Casimir energy of a massless scalar field in the Kerr black hole surrounded by quintessence derived in [B. Toshmatov, Z. Stuchl\'{i}k and B. Ahmedov, Eur. Phys. J.
Ahmedov, Bobomurat +2 more
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Plant Protection Science, 2002 The pure cultures of the fungus Leptosphaeria maculans were isolated from the rapeseed leaves collected in Moravia. Two isolates were collected on the basis of their ability to produce yellow colour.
E. Plachká, L. Odstrčilová
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A New Step-by-Step (SBS) Algorithm for Inconsistency Reduction in Pairwise Comparisons
IEEE Access, 2020 Pairwise comparisons constitute a popular and important tool for multiple-criteria decision making. Consistency is one particular aspect of pairwise comparisons that has been studied thoroughly in recent decades since human judgements are seldom fully ...
Jiri Mazurek +3 more
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Why do retail customers hesitate for shopping grocery online?
Technological and Economic Development of Economy, 2020 Considering a relatively slow adoption of online grocery shopping in the vast majority of the world markets, the main objective of this study was to uncover any new reasons why customers hesitate to shop groceries online.
Martin Klepek, Radka Bauerová
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On complete integrability of the Mikhailov-Novikov-Wang system
, 2010 We obtain compatible Hamiltonian and symplectic structure for a new two-component fifth-order integrable system recently found by Mikhailov, Novikov and Wang (arXiv:0712.1972), and show that this system possesses a hereditary recursion operator and ...
Kaup D. J. +5 more
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Renaissance Studies, EarlyView.Abstract In the late fifteenth century, the Hungarian royal court at Buda was home to a cosmopolitan community of humanists. In early modern historiography, this cultural milieu has often been interpreted as one of the new, emergent ‘centres’ of the Renaissance in East Central Europe.
Eva Plesnik
wiley +1 more source
Penrose Process: Its Variants and Astrophysical Applications
Universe, 2021 We present a review of the Penrose process and its modifications in relation to the Kerr black holes and naked singularities (superspinars). We introduce the standard variant of this process, its magnetic version connected with magnetized Kerr black ...
Zdeněk Stuchlík +2 more
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