197,250 research outputs found
I poligoni: dai mosaici dell’Alhambra alle incisioni di Escher
No full textDescrizione delle attività svolte durante l'omonimo laboratorio tenuto per il PLS matematica nell'anno 201
Incontri matematici del terzo tipo
No full textIl Piano Lauree Scientifiche (PLS) `e oggi il principale programma di orientamento universitario in ambito scientifico operante in Italia. Esso
nasce con il nome di Progetto Lauree Scientifiche nel 2004 dalla collaborazione tra il Ministero dell’Istruzione, dell’Universit`a e della Ricerca
(MIUR), la Conferenza dei Presidi di Scienze e Teconologia (Con.Scienze), e Confindustria, con l’obiettivo principale di fare fronte alla riduzione degli
studenti iscritti ai corsi di laurea scientifici, principalmente in matematica, fisica e chimic
Carta geomorfologica del territorio compreso tra il M. Antola e il Lago del Brugneto (Alta Val Trebbia, Appennino ligure).
No full textFaccini F., Perasso L., Robbiano A., Brandolini P. (2009) – Geomorfologia applicata alla pianificazione del territorio ed alla difesa del suolo in un tipico ambiente montano ligure. Memorie della Società Geografica Italiana, 211-22
Global W2,p estimates for nondivergence elliptic operators with potentials satisfying a reverse Hölder condition
No full textIn this article, we give some a priori L p(ℝ n) estimates for elliptic operators in nondivergence form with VMO coefficients and a potential V satisfying an appropriate reverse Hölder condition, generalizing previous results due to Chiarenza-Frasca-Longo to the scope of Schrödinger-type operators. In particular, our class of potentials includes unbounded functions such as nonnegative polynomials. We apply such a priori estimates to derive some global existence and uniqueness results under some additional assumptions on V.Fil: Bramanti, M.. Politecnico di Milano; ItaliaFil: Brandolini, L.. Università degli Studi di Bergamo; ItaliaFil: Harboure, Eleonor Ofelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Matemática Aplicada del Litoral. Universidad Nacional del Litoral. Instituto de Matemática Aplicada del Litoral; ArgentinaFil: Viviani, Beatriz Eleonora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Matemática Aplicada del Litoral. Universidad Nacional del Litoral. Instituto de Matemática Aplicada del Litoral; Argentin
Advanced Model for Truck Transportation Analysis
No full textThe paper proposes an innovative solution for supporting education for managers of truck companies; the proposed approach is heavily based on the use of innovative technologies such as M&S (Modeling and Simulation) as requested by the emerging regulations in Europe
Correction to: Estimating the Potential of Archaeo-historical Data in the Definition of Geomorphosites and Geo-educational Itineraries in the Central Po Plain (N Italy)
No full textThe original version of this article unfortunately contained a mistake. The authors’ family names/first names have been inverted. The correct author names are listed above
Le incisioni rupestri del Monte Bego nei diari di campagna di Clarence Bicknel. Ambiente fisico e presenza antropica
No full text
Hörmander Operators
No full textIntroduction; Basic Geometry Of Vector Fields; Function Spaces; Homogeneous Groups In Rn; Hypoellipticity Of Sublaplacians; Hypoellipticity Of Hörmander Operators; Fundamental Solutions; Real Analysis In Locally Doubling Spaces; Sobolev And Hörmander Estimates On Groups; More Geometry Of Vector Fields; Lifting And Approximation; Sobolev And Hörmander Estimates; Nonvariational Hörmander Operators; Appendix: Short Summary Of Distribution Theory; Bibliograph
Liouville type results and a maximum principle for non-linear differential operators on the Heisenberg group
No full textWe prove Liouville type results for non-negative solutions of the differential inequality Δφu⩾f(u)ℓ(|∇0u|) on the Heisenberg group under a generalized Keller-Osserman condition. The operator Δφu is the φ-Laplacian defined by div0(|∇0u|−1φ(|∇0u|)∇0u) and φ, f and ℓ satisfy mild structural conditions. In particular, ℓ is allowed to vanish at the origin. A key tool that can be of independent interest is a strong maximum principle for solutions of such differential inequality.
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