00730cam0-2200289---450-99000424847040332120141112120240.0000424847FED01000424847(Aleph)000424847FED0100042484719990604f19001960km-y0itay50------baitaIT--------001gyPoesiePasquale CinquegranaNapoliTirrena[19-?]173 p.19 cm851.8Cinquegrana,Pasquale167983ITUNINARICAUNIMARCBK990004248470403321851.8 CIN 1Bibl.37539FLFBCFLFBCPoesie480065UNINA00985nam0 22002531i 450 UON0017998020231205103127.83807-316-3374-120030730d1988 a |0itac50 baengAU|||| |||||Abstractscompiled by Graeme Aplin SydneyI.G.C.c1988 - 2 v.673 p.23 cm. + 1 v. di programmSul front.: 26th Congress of the International G eographical Union, Sydney, Australia, 21-26 August 1988.GeografiaStudi generaliUONC035113FIAUSydneyUONL001938APLINGraemeUONV103091ITSOL20250207RICASIBA - SISTEMA BIBLIOTECARIO DI ATENEOUONSIUON00179980SIBA - SISTEMA BIBLIOTECARIO DI ATENEOSI VII GEO A SI SC 19309 5 Abstracts725233UNIOR03941nam 22007935 450 991014631090332120250730104857.03-540-48284-910.1007/BFb0093968(CKB)1000000000437300(SSID)ssj0000326506(PQKBManifestationID)12082549(PQKBTitleCode)TC0000326506(PQKBWorkID)10296764(PQKB)11730812(DE-He213)978-3-540-48284-0(MiAaPQ)EBC5578287(Au-PeEL)EBL5578287(OCoLC)1066179036(MiAaPQ)EBC6866760(Au-PeEL)EBL6866760(PPN)155175742(EXLCZ)99100000000043730020121227d1999 u| 0engurnn|008mamaatxtccrSemi-algebraic Function Rings and Reflectors of Partially Ordered Rings /by Niels Schwartz, James J. Madden1st ed. 1999.Berlin, Heidelberg :Springer Berlin Heidelberg :Imprint: Springer,1999.1 online resource (XIII, 279 p.) Lecture Notes in Mathematics,1617-9692 ;1712Bibliographic Level Mode of Issuance: Monograph3-540-66460-2 Preordered and partially ordered rings -- Reflective subcategories -- Totally ordered and real closed fields -- Real spectra of preordered rings -- Epimorphisms of reduced porings -- Functions and representable porings -- Semi-algebraic functions -- Comparing reflectors -- Constructing reflectors -- H-closed epireflectors -- Quotient-closed reflectors -- The real closure reflector -- Arities of reflectors and approximations by H-closed reflectors -- Epimorphic extensions of reduced porings -- Essential monoreflectors -- Reflections of totally ordered fields -- von Neumann regular f-rings -- Totally ordered domains -- Reduced f-rings -- Rings of continuous piecewise polynomial functions -- Rings of continuous piecewise rational functions -- Discontinuous semi-algebraic functions -- The lattice of H-closed monoreflectors.The book lays algebraic foundations for real geometry through a systematic investigation of partially ordered rings of semi-algebraic functions. Real spectra serve as primary geometric objects, the maps between them are determined by rings of functions associated with the spectra. The many different possible choices for these rings of functions are studied via reflections of partially ordered rings. Readers should feel comfortable using basic algebraic and categorical concepts. As motivational background some familiarity with real geometry will be helpful. The book aims at researchers and graduate students with an interest in real algebra and geometry, ordered algebraic structures, topology and rings of continuous functions.Lecture Notes in Mathematics,1617-9692 ;1712AlgebraNumber theoryGeometryGeometry, AlgebraicNonassociative ringsAlgebraNumber TheoryGeometryAlgebraic GeometryNon-associative Rings and AlgebrasAlgebra.Number theory.Geometry.Geometry, Algebraic.Nonassociative rings.Algebra.Number Theory.Geometry.Algebraic Geometry.Non-associative Rings and Algebras.516.3Schwartz Niels1950-62483Madden James J.MiAaPQMiAaPQMiAaPQBOOK9910146310903321Semi-algebraic function rings and reflectors of partially ordered rings262403UNINA