Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Paul Popescu"'
Autor:
Marcela Popescu, Paul Popescu
Publikováno v:
Symmetry, Vol 14, Iss 7, p 1375 (2022)
The aim of the paper is to find conditions in which the derived almost Lie vector bundle E1 of an almost Lie vector bundle E is a Lie algebroid. The conditions are that some extended curvatures on E, considered in the paper, are vanishing. Two non-tr
Externí odkaz:
https://doaj.org/article/68d1f41818d34f8ab6a7985f91056b9f
Autor:
Marcela Popescu, Paul Popescu
Publikováno v:
Symmetry, Vol 14, Iss 7, p 1435 (2022)
A new category equivalence is proved in this paper, involving the two distinct categories of modules, the covariant and the contravariant, respectively, released by Higgins and Mackenzie. The equivalence of the two categories is given when restrictin
Externí odkaz:
https://doaj.org/article/17b805f366214c148875207f5fef8b87
Autor:
Marcela Popescu, Paul Popescu
Publikováno v:
Symmetry, Vol 13, Iss 4, p 641 (2021)
The aim of this paper is to construct Noether invariants for Lagrangian non-holonomic dynamics with affine or nonlinear constraints, considered to be adapted to a foliation on the base manifold. A set of illustrative examples is given, including line
Externí odkaz:
https://doaj.org/article/3a0d080cacf14f74966ed5e97d7a87b1
Publikováno v:
Mathematics, Vol 8, Iss 10, p 1825 (2020)
In this paper, we extend our previous study regarding a Riemannian manifold endowed with a singular (or regular) distribution, generalizing Bochner’s technique and a statistical structure. Following the construction of an almost Lie algebroid, we d
Externí odkaz:
https://doaj.org/article/40a52f5cfc2b417eb7178f2e5edd7dc0
Publikováno v:
Mathematics, Vol 8, Iss 3, p 365 (2020)
We study geometry of a Riemannian manifold endowed with a singular (or regular) distribution, determined as an image of the tangent bundle under smooth endomorphisms. Following construction of an almost Lie algebroid on a vector bundle, we define the
Externí odkaz:
https://doaj.org/article/16b5f7efa27d4385a338f0d569523342
Autor:
Paul Popescu
Publikováno v:
Agile Digitalisierung im Baubetrieb ISBN: 9783658341060
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1eb2a59f7c38e7a09a2a180e0dac3cc3
https://doi.org/10.1007/978-3-658-34107-7_25
https://doi.org/10.1007/978-3-658-34107-7_25
Publikováno v:
Mathematics, Vol 8, Iss 1825, p 1825 (2020)
Mathematics
Volume 8
Issue 10
Mathematics
Volume 8
Issue 10
In this paper, we extend our previous study regarding a Riemannian manifold endowed with a singular (or regular) distribution, generalizing Bochner&rsquo
s technique and a statistical structure. Following the construction of an almost Lie algebr
s technique and a statistical structure. Following the construction of an almost Lie algebr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1416833822c2d2db81651349efb6f31
https://www.mdpi.com/2227-7390/8/10/1825
https://www.mdpi.com/2227-7390/8/10/1825
Autor:
Marcela Popescu, Paul Popescu
Publikováno v:
ITM Web of Conferences. 49:02007
The aim of the paper is to prove that if some extended curvatures on a preinfinitesimal module L, considered in the paper, vanish, then the derived preinfinitesimal module L(1) is a Lie pseudoalgebra. Two non-trivial examples are given. The first exa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50ea3ed05b68ac9201c1d5c7c81212a4
https://doi.org/10.1051/itmconf/20224902007
https://doi.org/10.1051/itmconf/20224902007
How many k-step linear block methods exist and which of them is the most efficient and simplest one?
Autor:
Higinio Ramos, Paul Popescu
Publikováno v:
Applied Mathematics and Computation. 316:296-309
There have appeared in the literature a lot of k -step block methods for solving initial-value problems. The methods consist in a set of k simultaneous multistep formulas over k non-overlapping intervals. A feature of block methods is that there is n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e0a1016283e6ed3b9ab8a0ef454d17f
https://doi.org/10.1016/j.amc.2017.08.036
https://doi.org/10.1016/j.amc.2017.08.036
Autor:
Paul Popescu, Cristian Ida
Publikováno v:
Journal of Geometry and Physics. 112:210-223
The Dolbeault cohomology plays an important role in the study of some ∂ ¯ -invariants of complex and holomorphic vector bundles as ∂ ¯ -Chern classes and Atiyah classes. In this paper we generalize similar invariants and their properties in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::492ed64c4d78f10ea2242cfa8e75f9b1
https://doi.org/10.1016/j.geomphys.2016.11.009
https://doi.org/10.1016/j.geomphys.2016.11.009