1,729,050 research outputs found
Introduzione
No full textIntroduzione di Elide Casali in cui vengono illustrate le coordinate cronologiche (età moderna), spaziali (Romagna)e culturali (la cultura e la letteratura scientifica durante l'età dei "maghi", secondo la definizione di Paolo Rossi) cui si riferiscono i saggi elaborati - a partire da testi e fonti presenti nelle Collezioni Piancastelli conservate presso la Biblioteca Comunale "A.Saffi" di Forlì - da F. Bacchelli (Un maestro di scuola napoletano a Forlì: Marcello Palingenio), G. Cerasoli (Girolamo Mercuriale e le malattie dei bambini), L. Michelacci (L'enciclopedia del mondo: Tomaso Tomai e l'"Idea del giardino del mondo"), F. Gatta (L'"Idea del giardino del mondo: note linguistiche), A. Natale (I mostri in fuga), M. Carreras (Professione medico: dalla traduzione spagnola de "La piazza universale di tutte le professioni del mondo nobili et ignobili" di Tomaso Garzoni), G. Ernst (Dai "Donneschi diffetti" alla "Magic'arte". Giuseppe Passi tra stregoneria e magia naturale), E. Zinato (Illuminismo, retorica galileiana e modelli tradizionali: un "Parere" di Morgagni sulla salubrità dell'aria), G. Olmi (Padre Cesare Majoli, "uomo la boriosissimo per la storia naturale"), M. Prandi (Sfogliando un manoscritto illustrato di Cesare Majoli: i nomi dei fiori)
Estimating Matveev's complexity via crystallization theory
No full textIn [M.R. Casali, Computing Matveev's complexity of non-orientable 3-manifolds via crystallization theory, Topology Appl. 144(1-3) (2004) 201-209], a graph-theoretical approach to Matveev's complexity computation is introduced, yielding the complete classification of closed non-orientable 3-manifolds up to complexity six. The present paper follows the same point-of view, making use of crystallization theory and related results (see [M. Ferri, Crystallisations of 2-fold branched coverings of S^3, Proc. Amer. Math. Soc. 73 (1979) 271-276]; [M.R. Casali, Coloured knots and coloured graphs representing 3-fold simple coverings of S^3, Discrete Math. 137 (1995) 87-98]; [M.R. Casali, From framed links to crystallizations of bounded 4-manifolds, J. Knot Theory Ramifications 9(4) (2000) 443-458]) in order to significantly improve existing estimations for complexity of both 2-fold and three-fold simple branched coverings (see [O.M. Davydov, The complexity of 2-fold branched coverings of a 3-sphere, Acta Appl. Math. 75 (2003) 51-54] and [O.M. Davydov, Estimating complexity of 3-manifolds as of branched coverings, talk-abstract, Second Russian-German Geometry Meeting dedicated to 90-anniversary of A.D.Alexandrov, Saint-Petersburg, Russia, June 2002]) and 3-manifolds seen as Dehn surgery (see [G. Amendola, An algorithm producing a standard spine of a 3-manifold presented by surgery along a link, Rend. Circ. Mat. Palermo 51 (2002) 179-198])
Relato por Silvana Casali
No full textYa me acordé: yo tengo que comprar una campera, por eso vinimos al centro y caminamos por la vereda de calle 7 aunque pensemos que es calle 8, parece que yo necesito una campera con muchísima urgencia y mi amiga, una piba bajita que por lo visto viene para ayudarme, camina apurada, caminamos apurados, los dos.Fil: Casali, Silvana Mercedes. Universidad Nacional de La Plata. Facultad de Periodismo y Comunicación Social; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentin
A catalogue of the genus two 3-manifolds
No full textIn this paper, the extension of the notion of “wave move” to crystallizations (by Casali-Grasselli) leads to a “reduced” catalogue of all genus 3-manifolds, depending on 6-tuples of positive integers. The appendix shows a partial output of the computer program which generates the catalogue and gives a presentation of the fundamental group of each element
Offertorio per la prima Domenica di Quaresima // di Giambatista Casali (manuscrit autographe)
No full textAncien possesseur : Malherbe, Charles (1853-1911). Ancien possesseurTitre uniforme : Casali, Giovanni Battista (1715?-1792). Compositeur. [Scapulis suis]Titre propre pris au départ. - D'une autre main au départ : "Maestro in S. Giovanni Laterano dall'an. 1759 sine alla fine di Giugno dell'an. 1792". - D'une autre main encore, au crayon : "Casali,Giov. Batt., Kirchencomponist". - Choeur : Ut 1, Ut 3, Ut 4, Fa 4Présentation musicale : [Partition]Incipit : Scapulis suis obumbrabit tibi DominusAppartient à l’ensemble documentaire : RISM2Appartient à l’ensemble documentaire : RISMMssOffertoires (musique) -- +* 1700......- 1799......+:18e siècle
c_GM: A program to compute GM-complexity of edge-coloured graphs representing closed 3-manifolds
No full textc_GM is a C++ program which implements the algorithmic procedure described in [M.R. Casali, Computing Matveev's complexity of non-orientable 3-manifolds via crystallization theory, Topology and its Applications 144 (1-3) (2004), 201-209], to estimate Matveev's complexity of a 3-manifold starting from the code of an associated edge-coloured graph (GM-complexity computation). This program has already allowed to compute GM-complexity of all non-orientable 3-manifolds represented by edge-coloured graphs up to 26 vertices (catalogue ~C26) and of all orientable 3-manifolds represented by edge-coloured graphs up to 28 vertices (catalogue C28), giving a significant help to the classification of the involved manifolds; classes of manifolds for which the estimation is actually exact have been also detected. Furthermore, a comparison between different notions of complexity has been performed with the aid of this program: see [M.R. Casali, Computing Matveev's complexity of non-orientable 3-manifolds via crystallization theory, Topology and its Applications 144 (1-3) (2004), 201-209] and [M.R. Casali - P.Cristofori, Computing Matveev's complexity via crystallization theory: the orientable case, Acta Applicandae Mathematicae 92 (2006), 113-123]. The program computes the GM-complexity both of a single edge-coloured graph and of a list of edge-coloured graphs. It also computes the minimal GM-complexity of a set of crystallizations representing the same manifold, thus providing upper bounds for the complexity of the manifold itself.c_GM interacts with Duke III program for handling edge-coloured graphs, since it recognizes Duke’s encoding of graphs and it can run on catalogues of crystallizations generated and classified through the procedures of CRYSTALLIZATION CATALOGUES and program Gamma_class
Fundamental groups of branched covering spaces of S^3
No full textGiven a knot K in , it is known a standard method (by Casali and Grasselli) for constructing a 4-coloured graph representing the closed orientable 3-manifold which is the d-fold covering space of branched over K and associated to the transitive d-representation of the knot group. In this paper we obtain a presentation of the fundamental group of M, directly from the Wirtinger presentation of the knot group and from the transitive d-representation
Introduzione
No full textL'Introduzione di Elide casali traccia le coordinate cronologiche (età moderna, l"'età dei maghi" secondo la definizione di Paolo Rossi), spaziali (Romagna) e culturali (scienza e letteratura) cui si riferiscono i saggi elaborati da una serie di collaboratori ( F. Bacchelli, G. Cerasoli, L. Michelacci, F. Gatta, A. Natale, M. Carreras, G. Ernst, E. Zinato, G. Olmi, M. Prandi) su una serie di testi e fonti presenti nelle Raccolte Piancastelli conservate presso la Biblioteca Comunale"A. Saffi" di Forlì"
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