Results for "Monica Motta"

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Necessary conditions involving Lie brackets for impulsive optimal control problemsMar 14 2019We obtain higher order necessary conditions for a minimum of a Mayer optimal control problem connected with a nonlinear, control-affine system, where the controls range on an m-dimensional Euclidean space. Since the allowed velocities are unbounded and ... More
A Higher-order Maximum Principle for Impulsive Optimal Control ProblemsMar 12 2019We consider a nonlinear control system, affine with respect to an unbounded control $u$ taking values in a closed cone of $\mathbb{R}^m$, and with drift depending on a second, ordinary control $a$, ranging on a bounded set. We provide first and higher ... More
Asymptotic controllability and optimal controlOct 16 2012Dec 11 2012We consider a control problem where the state must reach asymptotically a target while paying an integral payoff with a non-negative Lagrangian. The dynamics is just continuous, and no assumptions are made on the zero level set of the Lagrangian. Through ... More
Asymptotic problems in optimal control with a vanishing Lagrangian and unbounded dataJun 30 2014In this paper we give a representation formula for the limit of the fnite horizon problem as the horizon becomes infinite, with a nonnegative Lagrangian and unbounded data. It is related to the limit of the discounted infinite horizon problem, as the ... More
Lyapunov-like functions involving Lie bracketsAug 09 2016For a given closed target we embed the dissipative relation that defines a control Lyapunov function in a more general differential inequality involving Hamiltonians built from iterated Lie brackets. The solutions of the resulting extended relation, here ... More
The value function of an asymptotic exit-time optimal control problemDec 28 2013Mar 20 2014We consider a class of exit--time control problems for nonlinear systems with a nonnegative vanishing Lagrangian. In general, the associated PDE may have multiple solutions, and known regularity and stability properties do not hold. In this paper we obtain ... More
Stabilizability in optimal controlNov 30 2018We investigate sampling and Euler solutions for control systems associated to discontinuous feedbacks by considering also the corresponding costs. In particular, we introduce the notions of Sample and Euler stabilizability to a closed target set C with ... More
Optical properties of bialkali photocathodesAug 17 2004The optical properties of the `bialkali' KCsSb and RbCsSb photomultiplier cathodes have been experimentally investigated in the visible range. The measurements carried out include the absolute reflectance at near-normal incidence, the polarization-dependent ... More
Solutions to the relativistic precession modelAug 05 2014The relativistic precession model (RPM) can be used to obtain a precise measurement of the mass and spin of a black hole when the appropriate set of quasi periodic oscillations is detected in the power-density spectrum of an accreting black hole. However, ... More
Massive binary black holes in galactic nuclei and their path to coalescenceJul 11 2014Massive binary black holes form at the centre of galaxies that experience a merger episode. They are expected to coalesce into a larger black hole, following the emission of gravitational waves. Coalescing massive binary black holes are among the loudest ... More
Document Clustering using K-MedoidsApr 06 2015People are always in search of matters for which they are prone to use internet, but again it has huge assemblage of data due to which it becomes difficult for the reader to get the most accurate data. To make it easier for people to gather accurate data, ... More
The recent Italian regulations about the open-access availability of publicly-funded research publications, and the documentation landscape in astrophysicsJul 23 2014Jan 12 2015In October 2013 Italy enacted Law 112 2013, containing the first national regulations about the open access availability of publicly-funded research results (publications). The impact of these new regulations with the specific situation of that open access ... More
An observation on highest weight crystalsNov 09 2005As shown by Stembridge, crystal graphs can be characterized by their local behavior. In this paper, we observe that a certain local property on highest weight crystals forces a more global property. In type $A$, this statement says that if a node has ... More
On a Poisson structure on the space of Stokes matricesFeb 05 1999In this paper we study the map associating to a linear differential operator with rational coefficients its monodromy data. The operator has one regular and one irregular singularity of Poincare' rank 1. We compute the Poisson structure of the corresponding ... More
Star formation histories of resolved stellar populations: in and beyond the Local GroupJan 05 2007The exploitation of the power and the spatial resolution of HST and new generation ground-based telescopes allows to measure with good precision the individual stars of galaxies in and beyond the Local Group. This leads to very successful studies of the ... More
Chemical evolution of irregular galaxiesJun 19 1998The state-of-the-art of chemical evolution models for Irregular and Blue Compact galaxies is reviewed. The resulting scenarios for the initial mass function, the regime of star formation and the efficiency of gas outflows are described: The IMF appears ... More
Existence of the equilibrium in choiceApr 04 2016In this paper, we prove the existence of the equilibrium in choice for games in choice form. These games have recently been introduced by A. Stefanescu, M. Ferrara and M. V. Stefanescu. Our results link the recent research to the older approaches, regarding ... More
Fixed Point Theorems and applications in Theory of GamesMar 27 2013We introduce the notions of weakly *-concave and weakly naturally quasi-concave correspondence and prove fixed point theorems and continuous selection theorems for these kind of correspondences. As applications in the game theory, by using a tehnique ... More
Existence of equilibrium for an abstract economy with private information and a countable space of actionsApr 01 2013We define the model of an abstract economy with private information and a countable set of actions. We generalize the H. Yu and Z. Zhang's model (2007), considering that each agent is characterised by a preference correspondence instead of having an utility ... More
Weak conditions for random fixed point and approximation resultsJul 10 2015In this paper, we study the existence of the random approximations and fixed points for random almost lower semicontinuous operators defined on finite dimensional Banach spaces, which in addition, are condensing or 1-set-contractive. Our results either ... More
Fixed point theorems for nonconvex valued correspondences and applications in game theoryApr 02 2013In this paper, we introduce several types of correspondences: weakly naturally quasiconvex, *-weakly naturally quasiconvex, weakly biconvex and correspondences with *--weakly convex graph and we prove some fixed point theorems for these kinds of correspondences. ... More
On String Gas Cosmology at Finite TemperatureOct 03 2003Nov 18 2003Within an adiabatic approximation, thermodynamical equilibrium and a small, nine dimensional, toroidal universe as initial conditions, we analyze the evolution of the dimensions in two different regimes: (i) the Hagedorn regime, with a single scale factor ... More
Global well-posedness and scattering for the defocusing cubic NLS in four dimensionsNov 05 2010In this short note we present a new proof of the global well-posedness and scattering result for the defocusing energy-critical NLS in four space dimensions obtained previously by Ryckman and Visan. The argument is inspired by the recent work of Dodson ... More
The defocusing energy-critical nonlinear Schrödinger equation in higher dimensionsAug 16 2005Jun 24 2006We obtain global well-posedness, scattering, and global $L^{\frac{2(n+2)}{n-2}}_{t,x}$ spacetime bounds for energy-space solutions to the energy-critical nonlinear Schr\"odinger equation in $\R_t\times \R^n_x$, $n\geq 5$.
AGB stars and the chemical evolution of galaxiesJan 03 2007Asymptotic Giant Branch (AGB) stars are important players in the chemical evolution modelling of galaxies, because they are major producers of several chemical elements and excellent tracers of the structure and of the star formation activity of their ... More
Transferring SymmetryJul 07 2015Dec 11 2015In this paper, we apply results of \cite{Va3} and use towers to transfer symmetry from $\mu^+$ down to $\mu$ in superstable abstract elementary classes without using extra set-theoretic assumptions or tameness. Theorem. Suppose $\mathcal{K}$ is an abstract ... More
Superstability in Tame Abstract Elementary ClassesFeb 13 2015Feb 17 2015In this paper we address a problem posed by Shelah in 1999 to find a suitable notion for superstability for abstract elementary classes in which limit models of cardinality $\mu$ are saturated. Theorem 1. Suppose that $\mathcal{K}$ is a $\chi$-tame abstract ... More
Studies of Inclusive Jet Production in ep Interactions at HERAAug 15 2003Inclusive jet production in neutral and charged current deep inelastic scattering, in photoproduction and the transition region has been studied with the ZEUS and H1 detectors at HERA. The measurements have been compared to next-to-leading-order QCD calculations ... More
Exotic hadronic states at HERANov 12 2004Recent results from H1, ZEUS, HERMES and HERA-B on searches for exotic baryons in ep collisions, eD scattering and pA scattering at HERA are reviewed. Evidence for the production of the strange pentaquark Theta^+ and of a narrow anti-charmed baryon decaying ... More
Flows of birational quadratic transformations in the complex projective space of dimension 3Feb 18 2010We study and classify up to a linear conjugation germs of flows in the space of quadratic birational transformations of the complex projective space of dimension 3. As a consequence we show that every quadratic flow preserves a pencil of planes through ... More
Restricting Toral Supercuspidal Representations to the Derived Group, and ApplicationsSep 11 2014We determine the decomposition of the restriction of a length-one toral supercuspidal representation of a connected reductive group to the algebraic derived subgroup, in terms of parametrizing data, and show this restriction has multiplicity one. As an ... More
On Branching Rules of Depth-Zero RepresentationsFeb 22 2013Sep 12 2014Using Bruhat-Tits theory, we analyse the restriction of depth-zero representations of a semisimple simply connected $p$-adic group $G$ to a maximal compact subgroup $K$. We prove the coincidence of branching rules within classes of Deligne-Lusztig supercuspidal ... More
Patterns in Branching Rules for Irreducible Representations of SL_2(k), for k a p-adic fieldJun 04 2012Building on prior work, we analyze the decomposition of the restriction of an irreducible representation of SL_2(k), for k a p-adic field of odd residual characteristic, to a maximal compact subgroup K. The pattern of the decomposition varies between ... More
Categoricity in Abstract Elementary Classes with No Maximal ModelsOct 26 2005The results in this paper are in a context of abstract elementary classes identified by Shelah and Villaveces in which the amalgamation property is not assumed. The long-term goal is to solve Shelah's Categoricity Conjecture in this context. Here we tackle ... More
[Fe IV] emission in ionized nebulaeJan 22 2003Feb 25 2003This paper presents an analysis of [Fe IV] emission based on new identifications and previous measurements of [Fe IV] lines in 30 Doradus, IC 4846, M42, SMC N88A, and SBS 0335-052. The Fe abundances obtained by adding the abundances of the relevant Fe ... More
Dynamical Evolution of Bulge ShapesJan 27 1999Figure rotation substantially increases the fraction of stochastic orbits in triaxial systems. This increase is most dramatic in systems with shallow cusps showing that it is not a direct consequence of scattering by a central density cusp or black hole. ... More
Substructure of jets at HERAOct 31 2001The substructure of jets produced in an exclusive and a charm-induced dijet sample in photoproduction and in charged and neutral current interactions has been studied with the ZEUS detector at HERA. Jets were identified using the longitudinally invariant ... More
Random fixed point theorems for lower semicontinuous condensing random operatorsJul 10 2015In this paper, we study the existence of the random fixed points for lower semicontinuous condensing random operators defined on Banach spaces. Our results extend corresponding ones present in literature.
On the Hamiltonian and Lagrangian structures of time-dependent reductions of evolutionary PDEsFeb 05 1999In this paper we study the reductions of evolutionary PDEs on the manifold of the stationary points of time-dependent symmetries. In particular we describe how the finite dimensional Hamiltonian structure of the reduced system is obtained from the Hamiltonian ... More
Random fixed point theorems under mild continuity assumptionsNov 28 2013In this paper, we study the existence of the random fixed points under mild continuity assumptions. The main theorems consider the almost lower semicontinuous operators defined on Frechet spaces and also operators having properties weaker than lower semicontinuity. ... More
Computation of ground-state properties in molecular systems: back-propagation with auxiliary-field quantum Monte CarloJul 10 2017We address the computation of ground-state properties of chemical systems and realistic materials within the auxiliary-field quantum Monte Carlo method. The phase constraint to control the fermion phase problem requires the random walks in Slater determinant ... More
Diversity and Intelligence in Multi-robot TeamsDec 10 2015This research proposes new tools for investigation of behavioral diversity in multi-robot systems and a significant body of results using these tools in simulated and real mobile robot experiments. The experiments specifically describe a framework of ... More
Star formation histories of resolved galaxiesJan 08 2009Jan 10 2009The colour-magnitude diagrams of resolved stellar populations are the best tool to study the star formation histories of the host galactic regions. In this review the method to derive star formation histories by means of synthetic colour-magnitude diagrams ... More
Evolution of D and 3He in the GalaxyJan 24 2000The predictions of Galactic chemical evolution models for D and $^3$He are described in connection with those on the other Galactic quantities for which observational constraints are available. Models in agreement with the largest set of data predict ... More
Comparison of Chemical Evolution Models for the Galactic DiskDec 14 1995The {\it best} chemical evolution models for the galactic disk computed by different groups with different assumptions are compared with each other and with the observational constraints. Differences and similarities between the models are discussed, ... More
The outreach activities in the astronomical research institutions and the role of librarians: what happens in ItalyDec 13 2011The outreach activities can be considered a new frontier of all the main astronomical research institutions worldwide and are a part of their mission that earns great appreciation from the general public. Here the situation at INAF, the Italian National ... More
On Rational Nilpotent Orbits of $SL_{n}$ and $Sp_{2n}$ over a Local Non-Archimedean FieldAug 10 2007Jan 15 2008We relate the partition-type parametrization of rational (arithmetic) nilpotent adjoint orbits of the split classical groups $SL_n$ and $Sp_{2n}$ over local non-Archimedean fields with a parametrization, introduced by DeBacker in 2002, which uses the ... More
The reduction of qualitative gamesMar 27 2013We extend the study of the iterated elimination of strictly dominated strategies (IESDS) from Nash strategic games to a class of qualitative games. Also in this case, the IESDS process leads us to a kind of 'rationalizable' result. We define several types ... More
On the Hamiltonian and Lagrangian structures of time-dependent reductions of evolutionary PDEsDec 22 2001In this paper we study the reductions of evolutionary PDEs on the manifold of the stationary points of time--dependent symmetries. In particular we describe how that the finite dimensional Hamiltonian structure of the reduced system is obtained from the ... More
On correlation functions in $J\bar T$-deformed CFTsFeb 04 2019The $J\bar T$ deformation, built from the components of the stress tensor and of a $U(1)$ current, is a universal irrelevant deformation of two-dimensional CFTs that preserves the left-moving conformal symmetry, while breaking locality on the right-moving ... More
Existence of equilibrium for multiobjective games in abstract convex spacesApr 01 2013In this paper we use the minimax inequalities obtained by S. Park (2011) to prove the existence of weighted Nash equilibria and Pareto Nash equilibria of a multiobjective game defined on abstract convex spaces.
Equilibrium existence results for a class of discontinuous gamesMar 27 2013We introduce the notions of w-lower semicontinuous and almost w-lower semicontinuous correspondence with respect to a given set and prove a new fixed-point theorem. We also introduce the notion of correspondence with e-LSCS-property. As applications we ... More
Black-hole binaries: life begins at 40 keVAug 21 2009In the study of black-hole transients, an important problem that still needs to be answered is how the high-energy part of the spectrum evolves from the low-hard to the high-soft state, given that they have very different properties. Recent results obtained ... More
Non-Gaussian features of primordial magnetic fields in power-law inflationMar 05 2012We show that a conformal-invariance violating coupling of the inflaton to electromagnetism produces a cross correlation between curvature fluctuations and a spectrum of primordial magnetic fields. According to this model, in the case of power-law inflation, ... More
The Bologna Open Cluster Chemical Evolution (BOCCE) Project: midterm results from the photometric sampleNov 01 2005We describe a long term project aimed at deriving information on the chemical evolution of the Galactic disk from a large sample of open clusters. The main property of this project is that all clusters are analyzed in a homogeneous way, to guarantee the ... More
Formation of an evanescent proto-neutron star binary and the origin of pulsar kicksJul 16 2002Aug 23 2002If core collapse leads to the formation of a rapidly rotating bar-unstable proto-neutron star surrounded by fall-back material, then we might expect it to cool and fragment to form a double (proto)-neutron star binary into a super-close orbit. The lighter ... More
Smooth solutions to the nonlinear wave equation can blow up on Cantor setsMar 27 2011We construct $C^\infty$ solutions to the one-dimensional nonlinear wave equation $$ u_{tt} - u_{xx} - \tfrac{2(p+2)}{p^2} |u|^p u=0 \quad \text{with} \quad p>0 $$ that blow up on any prescribed uniformly space-like $C^\infty$ hypersurface. As a corollary, ... More
The defocusing energy-supercritical nonlinear wave equation in three space dimensionsJan 11 2010We consider the defocusing nonlinear wave equation $u_{tt}-\Delta u + |u|^p u=0$ in the energy-supercritical regime p>4. For even values of the power p, we show that blowup (or failure to scatter) must be accompanied by blowup of the critical Sobolev ... More
Sign-changing blowing-up solutions for supercritical Bahri-Coron's problemFeb 05 2015Let $\Omega$ be a bounded domain in $\R^n$, $n\ge 3$ with smooth boundary $\partial\Omega$ and a small hole. We give the first example of sign-changing {\it bubbling} solutions to the nonlinear elliptic problem $$ -\Delta u=|u|^{{n+2\over n-2} +\ve -1 ... More
Contact Interactions at the LHCSep 17 2007Contact interactions offer a general framework for describing a new interaction with a scale above the energy scale probed. These interactions can occur if the Standard Model particles are composite or if new heavy particles are exchanged. The discovery ... More
Semistable subcategories for tiling algebrasJun 26 2018Jul 09 2018Semistable subcategories were introduced in the context of Mumford's GIT and interpreted by King in terms of representation theory of finite dimensional algebras. Ingalls and Thomas later showed that for finite dimensional algebras of Dynkin and affine ... More
Minimal coexistence configurations for multispecies systemsDec 12 2008We deal with strongly competing multispecies systems of Lotka-Volterra type with homogeneous Neumann boundary conditions in dumbbell-like domains. Under suitable non-degeneracy assumptions, we show that, as the competition rate grows indefinitely, the ... More
High energy sign-changing solutions for Coron's problemOct 05 2017We study the existence of sign changing solutions to the following problem $$ (P) \quad \quad \quad \left\{ \begin{array}{ll} \Delta u+|u|^{p-1}u=0 \quad & {\rm in} \quad \Omega_\epsilon; u=0 \quad & {\rm on} \quad\partial \Omega_\epsilon, \end{array} ... More
Energy-supercritical NLS: critical $\dot H^s$-bounds imply scatteringDec 11 2008We consider two classes of defocusing energy-supercritical nonlinear Schr\"odinger equations in dimensions $d\geq 5$. We prove that if the solution $u$ is apriorily bounded in the critical Sobolev space, that is, $u\in L_t^\infty \dot H^{s_c}_x$, then ... More
Bubbling solutions for Moser-Trudinger type equations on compact Riemann surfacesSep 04 2017We study an elliptic equation related to the Moser-Trudinger inequality on a compact Riemann surface $(S,g)$, $$ \Delta_g u+\lambda \Biggl(ue^{u^2}-{1\over |S|} \int_S ue^{u^2} dv_g\Biggl)=0,\quad\text{in $S$},\qquad \int_S u\,dv_g=0, $$ where $\lambda>0$ ... More
Generic Evolution Of Deuterium And Helium-3Feb 13 1995The primordial abundances of deuterium and of helium-3, produced during big bang nucleosynthesis, depend sensitively on the baryon density. Thus, the observed abundances of D and \he may provide useful ``baryometers'' provided the evolution from primordial ... More
Coexistence and Segregation for Strongly Competing Species in Special DomainsFeb 15 2006Dec 06 2007We deal with strongly competing multispecies systems of Lotka-Volterra type with homogeneous Dirichlet boundary conditions. For a class of nonconvex domains composed by balls connected with thin corridors, we show the occurrence of pattern formation (coexistence ... More
Stringy Schroedinger truncationsDec 30 2012Motivated by the desire to better understand finite-temperature holography for three-dimensional Schroedinger spacetimes, we: i) construct a four-parameter family of warped black string solutions of type IIB supergravity and ii) find the first consistent ... More
Spin-perpendicular kicks from evanescent binaries formed in the aftermath of rotational core-collapse and the nature of the observed bimodal distribution of pulsar peculiar velocitiesFeb 17 2003If rotating core collapse leads to the formation of a proto-neutron star binary in super-close orbit, then the lighter star, propelled toward the minimum stable mass, explodes. The neutron star (or black hole) that remains acquires a spin-perpendicular ... More
The K+ to pi+ nu nubar experiment at CERNSep 29 2008Oct 15 2008The NA62 experiment, proposed to measure the very rare decay K+ to pi+ nu nubar at the CERN SPS with 10% accuracy, aims to collect about 80 events in two years of data taking, keeping background contamination lower than 10%. This paper describes the status ... More
Hydrogen Dissociation and Diffusion on Transition Metal(=Ti,Zr,V,Fe,Ru,Co,Rh,Ni,Pd,Cu,Ag)-doped Mg(0001) SurfacesNov 14 2008The kinetics of hydrogen absorption by magnesium bulk is affected by two main activated processes: the dissociation of the H$_2$ molecule and the diffusion of atomic H into the bulk. In order to have fast absorption kinetics both activated processed need ... More
Black hole gas in the early universeOct 23 2009Jan 08 2010We consider the early universe at temperatures close to the fundamental scale of gravity (M_D << M_Planck) in models with extra dimensions. At such temperatures a small fraction of particles will experience transplanckian collisions that may result in ... More
Regular and Chaotic Dynamics of Triaxial Stellar SystemsJan 06 1998Jun 01 1998We use Laskar's frequency mapping technique to study the dynamics of triaxial galaxies with central density cusps and nuclear black holes. For ensembles of 10^4 orbits, we numerically compute the three fundamental frequencies of the motion, allowing us ... More
Self-Consistent Gravitational ChaosSep 10 1997The motion of stars in the gravitational potential of a triaxial galaxy is generically chaotic. However, the timescale over which the chaos manifests itself in the orbital motion is a strong function of the degree of central concentration of the galaxy. ... More
The spine of a Fourier-Stieltjes algebraMay 26 2005Oct 24 2005We define the spine A*(G) of the Fourier-Stieltjes algebra B(G) of a locally compact group G. A*(G) is graded over a certain semi-lattice, that of non-quotient locally precompact topologies on G. We compute the spine's spectrum G*, which admits a semi-group ... More
Causes of Effects via a Bayesian Model Selection ProcedureAug 25 2018Oct 22 2018In causal inference, and specifically in the \textit{Causes of Effects} problem, one is interested in how to use statistical evidence to understand causation in an individual case, and so how to assess the so-called {\em probability of causation} (PC). ... More
The Effect of alpha' Corrections in String Gas CosmologyApr 11 2006Sep 21 2006In the Brandenberger-Vafa scenario of string gas cosmology, the Universe starts as a small torus of string length dimension filled with a hot gas of strings. In such extreme conditions, in addition to the departure from Einstein gravity which is due to ... More
Gravitational wave sources in the era of multi-frequency gravitational wave astronomyOct 17 2016The focus of this Chapter is on describing the prospective sources of the gravitational wave universe accessible to present and future observations, from kHz, to mHz down to nano-Hz frequencies. The multi-frequency gravitational wave universe gives a ... More
On a parabolic operator of dissipative systemsJul 07 2013A parabolic integro differential operator operator L suitable to describe many phenomena in various physical fields,is considered. By means of equivalence between L and the third order equation which describe the evolution inside an exponentially shaped ... More
On a non linear third - order parabolic equationJul 09 2012Aim of this paper is the qualitative analysis of the solution of a boundary value problem for a third-order non linear parabolic equation which describes several dissipative models. When the source term is linear, the problem is explictly solved by means ... More
Superstability and SymmetryJul 07 2015May 23 2016This paper continues the study of superstability in abstract elementary classes (AECs) satisfying the amalgamation property. In particular, we consider the definition of $\mu$-superstability which is based on the local character characterization of superstability ... More
Global well-posedness and scattering for the defocusing quintic NLS in three dimensionsFeb 06 2011Aug 03 2011We revisit the proof of global well-posedness and scattering for the defocusing energy-critical NLS in three space dimensions in light of recent developments. This result was obtained previously by Colliander, Keel, Staffilani, Takaoka, and Tao.
On diffusion effects of the perturbed sine-Gordon equation with Neumann boundary conditionsFeb 29 2016The Neumann boundary problem for the perturbed sine-Gordon equation describing the electrodynamics of Josephson junctions has been considered. The behavior of a viscous term, described by a higher-order derivative with small diffusion coefficient, is ... More
Melting curve of face-centred-cubic nickel from first principles calculationsJul 15 2013The melting curve of Ni up to 100 GPa has been calculated using first principles methods based on density functional theory (DFT). We used two complementary approaches: i) coexistence simulations with a reference system and then free energy corrections ... More
Shelah's Categoricity Conjecture from a successor for Tame Abstract Elementary ClassesSep 16 2005Sep 19 2005Let K be an Abstract Elemenetary Class satisfying the amalgamation and the joint embedding property, let \mu be the Hanf number of K. Suppose K is tame. MAIN COROLLARY: (ZFC) If K is categorical in a successor cardinal bigger than \beth_{(2^\mu)^+} then ... More
Union of Saturated Models in Superstable Abstract Elementary ClassesJul 07 2015Dec 30 2015In this paper we prove: Theorem 1. Let $\mathcal{K}$ be an abstract elementary class which satisfies the joint embedding and amalgamation properties. Suppose $\lambda>\mu\geq LS(\mathcal{K})$ and $\theta$ is a limit ordinal $<\lambda^+$. If $\mathcal{K}$ ... More
Vector Boson Fusion Production of the Standard Model Higgs at the LHCJan 20 2009The cross section measurements of the Higgs boson production in the vector boson fusion (VBF) process at the LHC followed by a Higgs boson decay into tautau, WW and gamma gamma will significantly extend the possibility of Higgs boson coupling measurements. ... More
On the regularity of global attractorsJan 23 2009This note is focused on a novel technique in order to establish the boundedness in more regular spaces for global attractors of dissipative dynamical systems, without appealing to uniform-in-time estimates. As an application of the abstract result, the ... More
Parabolic - hyperbolic boundary layerJul 09 2012A boundary value problem related to a parabolic higher order operator with a small parameter is analized. When the small parameter tends to zero, the reduced operator is hyperbolic. When t tends to infinity a parabolic hyperbolic boundary layer appears. ... More
Global well-posedness and scattering for a class of nonlinear Schrodinger equations below the energy spaceJun 24 2006We prove global well-posedness and scattering for the nonlinear Schr\"odinger equation with power-type nonlinearity \begin{equation*} \begin{cases} i u_t +\Delta u = |u|^p u, \quad \frac{4}{n}<p<\frac{4}{n-2}, u(0,x) = u_0(x)\in H^s(\R^n), \quad n\geq ... More
Mobile Robots Adaptive Control Using Neural NetworksDec 10 2015The paper proposes a feed-forward control strategy for mobile robot control that accounts for a non-linear model of the vehicle with interaction between inputs and outputs. It is possible to include specific model uncertainties in the dynamic model of ... More
Study of e/gamma trigger for the electron calibration streamAug 16 2006This note describes a study of the possibilities for selecting an electron calibration stream using the High level electron trigger (Level 2 and the event filter). Using the electromagnetic calorimeter reconstruction and the track reconstruction algorithms, ... More
Black hole gas in TeV-gravity modelsDec 10 2009In a plasma at temperature close to the fundamental scale a small fraction of particles will experience transplanckian collisions that may result in microscopic black holes (BHs). We study the dynamics of a system (a black hole gas) defined by radiation ... More
U-Learning Within A Context-Aware Multiagent EnvironmentJan 20 2011New technological developments have made it possible to interact with computer systems and applications anywhere and anytime. It is vital that these applications are able to adapt to the user, as a person, and to its current situation, whatever that is. ... More
Orbital instability and relaxation in stellar systemsSep 23 1999The orbits of stars in galaxies are generically chaotic: the chaotic behavior arises in part from the intrinsically grainy nature of a potential that is composed of point masses. Even if the potential is assumed to be smooth, however, orbits in non-axisymmetric ... More
On the unicity of types for tame toral supercuspidal representationsJan 20 2018Jul 13 2018For tame arbitrary-length toral, also called positive regular, supercuspidal representations of a simply connected and semisimple $p$-adic group $G$, constructed as per Adler-Yu, we determine which components of their restriction to a maximal compact ... More
Galois-stability for Tame Abstract Elementary ClassesSep 23 2005We introduce tame abstract elementary classes as a generalization of all cases of abstract elementary classes that are known to permit development of stability-like theory. In this paper we explore stability results in this context. We assume that $\K$ ... More
Categorifying the tensor product of the Kirillov-Reshetikhin crystal $B^{1,1}$ and a fundamental crystalAug 18 2015We use Khovanov-Lauda-Rouquier (KLR) algebras to categorify a crystal isomorphism between a fundamental crystal and the tensor product of a Kirillov-Reshetikhin crystal and another fundamental crystal, all in affine type. The nodes of the Kirillov-Reshetikhin ... More
Nondegeneracy of Nonradial Nodal Solutions to Yamabe ProblemJun 23 2014We provide the first example of a sequence of {\em nondegenerate}, in the sense of Duyckaerts-Kenig-Merle \cite{DKM}, nodal nonradial solutions to the critical Yamabe problem $$ -\Delta Q= |Q|^{\frac{2}{n-2}} Q, \ \ Q \in {\mathcal D}^{1,2} (\R^n). $$ ... More