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1. |
Record Nr. |
UNINA990009990490403321 |
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Autore |
Georg Westermann Verlag |
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Titolo |
Arktischer Eisberg [Risorsa grafica] |
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Pubbl/distr/stampa |
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Braunschweig : Georg Westermann Verlag, [196.] |
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Descrizione fisica |
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1 diapositiva : col. ; 36 x 24 mm su supporto di cartone 50 x 50 mm |
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Locazione |
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Collocazione |
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Lingua di pubblicazione |
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Formato |
Grafica |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910135262703321 |
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Titolo |
ISO/IEC/IEEE 8802-A:2015(E) / / IEEE |
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Pubbl/distr/stampa |
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Piscataway : , : IEEE, , 2015 |
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ISBN |
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Descrizione fisica |
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1 online resource (80 pages) |
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Disciplina |
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Soggetti |
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Body area networks (Electronics) |
Ethernet (Local area network system) |
Metropolitan area networks (Computer networks) |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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This standard provides an overview to the family of IEEE 802(R) standards. It describes the reference models for the IEEE 802 standards and explains the relationship of these standards to the higher layer protocols; it provides a standard for the structure of IEEE 802 MAC |
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addresses; it provides a standard for identification of public, private, prototype, and standard protocols; it specifies an object identifier hierarchy used within IEEE 802 for uniform allocation of object identifiers used in IEEE 802 standards; and it specifies a method for higher layer protocol identification. |
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3. |
Record Nr. |
UNINA9910813899403321 |
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Autore |
Epstein Kitty Kelly <1946-> |
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Titolo |
Changing academia forever : black student leaders analyze the movement they led / / by Kitty Kelly Epstein and Bernard Stringer |
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Pubbl/distr/stampa |
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Gorham, Maine : , : Myers Education Press, , [2020] |
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©2020 |
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ISBN |
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Descrizione fisica |
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1 online resource (126 pages) |
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Disciplina |
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Soggetti |
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African American college students |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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4. |
Record Nr. |
UNINA9910964624503321 |
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Titolo |
Geometry IV : Non-regular Riemannian Geometry / / edited by Yu.G. Reshetnyak |
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Pubbl/distr/stampa |
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Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1993 |
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ISBN |
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Edizione |
[1st ed. 1993.] |
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Descrizione fisica |
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1 online resource (VII, 252 p.) |
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Collana |
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Encyclopaedia of Mathematical Sciences ; ; 70 |
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Disciplina |
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Soggetti |
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Geometry, Differential |
Differential Geometry |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Bibliographic Level Mode of Issuance: Monograph |
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Nota di bibliografia |
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Includes bibliographical references at the end of each chapters and indexes. |
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Nota di contenuto |
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I. Two-Dimensional Manifolds of Bounded Curvature -- II. Multidimensional Generalized Riemannian Spaces -- Author Index. |
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Sommario/riassunto |
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The book contains a survey of research on non-regular Riemannian geome try, carried out mainly by Soviet authors. The beginning of this direction oc curred in the works of A. D. Aleksandrov on the intrinsic geometry of convex surfaces. For an arbitrary surface F, as is known, all those concepts that can be defined and facts that can be established by measuring the lengths of curves on the surface relate to intrinsic geometry. In the case considered in differential is defined by specifying its first geometry the intrinsic geometry of a surface fundamental form. If the surface F is non-regular, then instead of this form it is convenient to use the metric PF' defined as follows. For arbitrary points X, Y E F, PF(X, Y) is the greatest lower bound of the lengths of curves on the surface F joining the points X and Y. Specification of the metric PF uniquely determines the lengths of curves on the surface, and hence its intrinsic geometry. According to what we have said, the main object of research then appears as a metric space such that any two points of it can be joined by a curve of finite length, and the distance between them is equal to the greatest lower bound of the lengths of such curves. Spaces satisfying this condition are called spaces with intrinsic metric. Next we introduce metric spaces with intrinsic metric satisfying |
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in one form or another the condition that the curvature is bounded. |
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