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[null,"1.","Record Nr.",null,"UNISALENTO991000112529707536"]
[null,null,"Titolo",null,"Centième anniversaire de la naissance de Franz Kafka, 1883-1924 : actes du colloque tenu à Paris les 26-28 septembre 1983"]
[null,null,"Pubbl/distr/stampa",null,"Paris : Didier, 1984"]
[null,null,"Descrizione fisica",null,"1 v. ; 23 cm"]
[null,null,"Collana",null,"Études germaniques"]
[null,null,"Disciplina",null,"833.912"]
[null,null,"Soggetti",null,"Kafka, Franz"]
[{"$nulls":4},"Kafka, Franz"]
[null,null,"Lingua di pubblicazione",null,"Francese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,"2.","Record Nr.",null,"UNINA9910780301503321"]
[null,null,"Autore",null,"Hsiang Wu Yi <1937->"]
[null,null,"Titolo",null,"Least action principle of crystal formation of dense packing type and the proof of Kepler's conjecture [[electronic resource] /] / Hsiang, Wu-Yi"]
[null,null,"Pubbl/distr/stampa",null,"Singapore ; ; River Edge, NJ, : World Scientific, 2001"]
[null,null,"ISBN",null,"1-281-86970-8"]
[{"$nulls":4},"9786611869700"]
[{"$nulls":4},"981-238-491-X"]
[null,null,"Descrizione fisica",null,"1 online resource (425 p.)"]
[null,null,"Collana",null,"Nankai tracts in mathematics"]
[null,null,"Disciplina",null,"511/.6"]
[{"$nulls":4},"516"]
[null,null,"Soggetti",null,"Kepler's conjecture"]
[{"$nulls":4},"Sphere packings"]
[{"$nulls":4},"Crystallography, Mathematical"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references."]
[null,null,"Nota di contenuto",null,"Contents; Foreword; Acknowledgment; List of Symbols; Chapter 1 Introduction; Chapter 2 The Basics of Euclidean and Spherical Geometries and a New Proof of the Problem of Thirteen Spheres; Chapter 3 Circle Packings and Sphere Packings; Chapter 4 Geometry of Local Cells and Specific Volume Estimation Techniques for Local Cells; Chapter 5 Estimates of Total Buckling Height; Chapter 6 The Proof of the Dodecahedron Conjecture; Chapter 7 Geometry of Type I Configurations and Local Extensions; Chapter 8 The Proof of Main Theorem I; Chapter 9 Retrospects and Prospects; References; Index"]
[null,null,null,"Sommario/riassunto","The dense packing of microscopic spheres (i.e. atoms) is the basic geometric arrangement in crystals of mono-atomic elements with weak covalent bonds, which achieves the optimal \"\"known density\"\" of p/v18. In 1611, Johannes Kepler had already \"\"conjectured\"\" that p/v18 should be the optimal \"\"density\"\" of sphere packings. Thus, the central problems in the study of sphere packings are the proof of Kepler's conjecture that p/v18 is the optimal density, and the establishing of the least action principle that the hexagonal dense packings in crystals are the geometric consequence of optimization of"]