8.6k citations
- Centre National de la Recherche ScientifiqueFR48 papers
- Osservatorio Astronomico di PadovaIT41 papers
- Universidad Complutense de MadridES41 papers
- Centro de AstrobiologíaES34 papers
- Universidad de SevillaES33 papers
- Universidad Nacional de Educación a DistanciaES29 papers
- Laboratoire d'Astrophysique de BordeauxFR26 papers
- National Institute for AstrophysicsIT25 papers
- University of CambridgeGB25 papers
- European Southern ObservatoryCL22 papers
- Institut d'Astrophysique de ParisFR22 papers
- Universitat Rovira i VirgiliES22 papers
14 papers · 1 filter
Nonlocal Symmetries, Telescopic Vector Fields and -Symmetries of Ordinary Differential Equations
Concepción Muriel, Juan Luis Romero
This paper studies relationships between the order reductions of ordinary differential equations derived by the existence of -symmetries, telescopic vector fields and some nonlo…
Properties of ultra-cool dwarfs with Gaia. An assessment of the accuracy for the temperature determination
Luis M. Sarro, Angel Berihuete, Cesar Carrion +3
We aimed to assess the accuracy of the Gaia teff and logg estimates as derived with current models and observations. We assessed the validity of several inference techniques for de…
Magneto-optic Faraday effect in maghemite nanoparticles/silica matrix nanocomposites prepared by the Sol-Gel method
M. Dominguez, D. Ortega, J. S. Garitaonandia +4
Bulk monolithic samples of γ-Fe2O3/SiO2 composites with different iron oxide/silica ratios have been prepared by the sol-gel technique. Iron oxide nanoparticles are obtained in-sit…
Purely infinite crossed products by endomorphisms
Eduard Ortega, Enrique Pardo
We study the crossed product -algebra associated to injective endomorphisms, which turns out to be equivalent to study the crossed product by the dilated autormorphism. We pro…
Symmetries of the quantum damped harmonic oscillator
J. Guerrero, F. F. López-Ruiz, V. Aldaya +1
For the non-conservative Caldirola-Kanai system, describing a quantum damped harmonic oscillator, a couple of constant-of-motion operators generating the Heisenberg-Weyl algebra ca…
Towards a K-theoretic characterization of graded isomorphisms between Leavitt path algebras
P. Ara, E. Pardo
Hazrat gave a K-theoretic invariant for Leavitt path algebras as graded algebras. Hazrat conjectured that this invariant classifies Leavitt path algebras up to graded isomorphism,…