00886nam0 2200277 450 991087139140332120240725092343.0978303083002120240725d2021----km y0itay50 baengCHy c 001yyEducating for radical social transformation in the climate crisisStuart TannockChamPalgrave Macmillan2021XI, 275 p.22 cmPalgrave studies in education and the environmentCambiamenti climaticiAspetti socialiPolitica ambientaleTannock,Stuart848299ITUNINAREICATUNIMARCBK9910871391403321GEN B 586414/2024FARBCFARBCEducating for Radical Social Transformation in the Climate Crisis1894697UNINA04070nam 22006495 450 991025408580332120220404183408.03-319-26765-510.1007/978-3-319-26765-4(CKB)3710000000579414(EBL)4356746(SSID)ssj0001607038(PQKBManifestationID)16317036(PQKBTitleCode)TC0001607038(PQKBWorkID)14895948(PQKB)10584852(DE-He213)978-3-319-26765-4(MiAaPQ)EBC4356746(PPN)191706051(EXLCZ)99371000000057941420160125d2016 u| 0engur|n|---|||||txtccrOn the geometry of some special projective varieties /by Francesco Russo1st ed. 2016.Cham :Springer International Publishing :Imprint: Springer,2016.1 online resource (257 p.)Lecture Notes of the Unione Matematica Italiana,1862-9113 ;18Description based upon print version of record.3-319-26764-7 Includes bibliographical references and index.Preface.-Introduction -- 1.Tangent cones, tangent spaces, tangent stars; secant, tangent and tangent star varieties to an algebraic variety -- 2.Basics of Deformation Theory of Rational Curves on Projective Varieties -- 3.Fulton-Hansen Connectedness Theorem, Scorza Lemma and their applications to projective geometry -- 4.Local quadratic entry locus manifolds and conic connected manifolds -- 5.Hartshorne Conjectures and Severi varieties -- 6.Varieties n-covered by curves of a fixed degree and the XJC -- 7. Hypersurfaces with vanishing hessian.-Bibliography.Providing an introduction to both classical and modern techniques in projective algebraic geometry, this monograph treats the geometrical properties of varieties embedded in projective spaces, their secant and tangent lines, the behavior of tangent linear spaces, the algebro-geometric and topological obstructions to their embedding into smaller projective spaces, and the classification of extremal cases. It also provides a solution of Hartshorne’s Conjecture on Complete Intersections for the class of quadratic manifolds and new short proofs of previously known results, using the modern tools of Mori Theory and of rationally connected manifolds. The new approach to some of the problems considered can be resumed in the principle that, instead of studying a special embedded manifold uniruled by lines, one passes to analyze the original geometrical property on the manifold of lines passing through a general point and contained in the manifold. Once this embedded manifold, usually of lower codimension, is classified, one tries to reconstruct the original manifold, following a principle appearing also in other areas of geometry such as projective differential geometry or complex geometry.Lecture Notes of the Unione Matematica Italiana,1862-9113 ;18Geometry, AlgebraicCommutative algebraCommutative ringsGeometryAlgebraic Geometryhttps://scigraph.springernature.com/ontologies/product-market-codes/M11019Commutative Rings and Algebrashttps://scigraph.springernature.com/ontologies/product-market-codes/M11043Geometryhttps://scigraph.springernature.com/ontologies/product-market-codes/M21006Geometry, Algebraic.Commutative algebra.Commutative rings.Geometry.Algebraic Geometry.Commutative Rings and Algebras.Geometry.510Russo Francescoauthttp://id.loc.gov/vocabulary/relators/aut14217BOOK9910254085803321On the Geometry of Some Special Projective Varieties2163217UNINA