Dehesa Colección:
http://hdl.handle.net/10662/8895
2024-03-28T21:48:25ZCorrigendum to “Moore-Penrose inverse and operator inequalities” Extracta Mathematicae 30 (2015), 29 - 39
http://hdl.handle.net/10662/8924
Títulos: Corrigendum to “Moore-Penrose inverse and operator inequalities” Extracta Mathematicae 30 (2015), 29 - 39
Autores/as: Seddik, Ameur
Resumen: We correct a mistake which affect our main results, namely the proof of Lema 1. The main results of the article remain unchanged.2017-01-01T00:00:00ZConformal mappings of mixed generalized quasi-Einstein manifolds admitting special vector fields
http://hdl.handle.net/10662/8922
Títulos: Conformal mappings of mixed generalized quasi-Einstein manifolds admitting special vector fields
Autores/as: Dey, Subhrajyoti; Bhattacharyya, Arindam
Resumen: It is known that Einstein manifolds form a natural subclass of the class of quasi-Einstein manifolds and plays an important role in geometry as well as in general theory of relativity. In this work, we investigate conformal mapping of mixed generalized quasi- Einstein manifolds, considering a conformal mapping between two mixed generalized quasi- Einstein manifolds Vn and V ̅n. We also find some properties of this transformation from Vn to V ̅n and some theorems are proved. Considering this mapping, we peruse some properties of these manifolds. Later, we also study some special vector fields under these mapping on this manifolds and some theorems about them are proved.2017-01-01T00:00:00ZContent Semimodules
http://hdl.handle.net/10662/8921
Títulos: Content Semimodules
Autores/as: Razavi Nazari, Rafieh; Ghalandarzadeh, Shaban
Resumen: The purpose of this paper is to study content semimodules. We obtain some results on content semimodules similar to the corresponding ones on content modules. We study normally at content semimodules and multiplication content semimodules. More over, we characterize content semimodules over discrete valuation semirings and Boolean algebras.2017-01-01T00:00:00ZInvariant control systems on Lie groups: A short survey
http://hdl.handle.net/10662/8920
Títulos: Invariant control systems on Lie groups: A short survey
Autores/as: Biggs, Rory; Remsing, Claudiu C.
Resumen: This is a short survey of our recent research on invariant control systems (and their associated optimal control problems). We are primarily concerned with equivalence and classification, especially in three dimensions.2017-01-01T00:00:00Z