Documents  53C25 | enregistrements trouvés : 55

- 457 p.
ISBN 978-0-8218-2750-5

Contemporary mathematics , 0288

Localisation : Collection 1er étage

géométrie différentielle globale # Gray

22E15 ; 53A10 ; 53A30 ; 53B35 ; 53C15 ; 53C20 ; 53C23 ; 53C25 ; 53C55 ; 53D05

... Lire [+]

ISBN 978-0-85312-699-7

Ellis horwood series in mathematics and its applications

Localisation : Colloque 1er étage (DURH)

53C20 ; 53C21 ; 53C25 ; 53Cxx

... Lire [+]

- ix; 348 p.
ISBN 978-0-8218-4651-3

Contemporary mathematics , 0491

Localisation : Collection 1er étage

représentation des groupes de Lie # espace homogène # géométrie différentielle # théorie de la représentation # paires de Gelfand

22Exx ; 43A85 ; 53Cxx ; 53C25 ; 53C30 ; 20Gxx ; 58J53 ; 22-06 ; 53-06 ; 20-06 ; 00B25

... Lire [+]

- 144 p.
ISBN 978-1-57146-226-8

Localisation : Colloque 1er étage (GOKO)

53-06 ; 53C25 ; 53D12 ; 53C21 ; 00B25

... Lire [+]

- 202 p.
ISBN 978-0-8218-3379-7

Contemporary mathematics , 0337

Localisation : Collection 1er étage

géométrie différentielle # géométrie riemannienne # variété de Lorentz # relativité

53-06 ; 53C50 ; 53C25 ; 53C30 ; 53C40 ; 53C55 ; 83C25 ; 83C75

... Lire [+]

- ix; 209 p.
ISBN 978-1-4704-2298-1

Contemporary mathematics , 0674

Localisation : Collection 1er étage

sous-variété # géométrie différentielle # variété de Riemann # espace Euclidien # immersion # variété de Lorentz # géométrie symplectique # sous-variété lagrangienne # indice de Maslov # analyse globale # opérateur non linéaire # théorie spectrale # problème aux valeurs limites # inégalité variationnelle

53A04 ; 53B25 ; 53C25 ; 53C40 ; 53C42 ; 53C50 ; 53D12 ; 58C40 ; 58E35 ; 53-06 ; 53D15

... Lire [+]

- xiii; 201 p.
ISBN 978-0-521-28274-1

London mathematical society lecture note series , 0394

Localisation : Collection 1er étage

géométrie différentielle # surface minimale # variétés de Riemann # évolution géométrique des équations

53-06 ; 53A10 ; 53C25 ; 53C43 ; 53C44 ; 00B15

... Lire [+]

Publications Mathématiques de l'Université de Paris VII , 0008

Localisation : Publication 1er étage

Lawson-Yau # Milnor-Wolf # fonction convexe # géométrie riemannienne # longueur de géodésique périodique # spectre de forme d'espace hyperbolique compacte # structure du pi indice 1 # théorie de Morse # varieté riemannienne complète # variété à courbure négative

51M10 ; 53C22 ; 53C25 ; 53Cxx ; 58F09

... Lire [+]

Research talks;Geometry

We will describe the construction of complete non-compact Ricci-flat manifolds of dimension 7 and 8 with holonomy $G_{2}$ and Spin(7) respectively. The examples we consider all have non-maximal volume growth and an asymptotic geometry, so-called ALC geometry, that generalises to higher dimension the asymptotic geometry of 4-dimensional ALF hyperkähler metrics. The interest in these metrics is motivated by the study of codimension 1 collapse of compact manifolds with exceptional holonomy. The constructions we will describe are based on the study of adiabatic limits of ALC metrics on principal Seifert circle fibrations over asymptotically conical orbifolds, cohomogeneity one techniques and the desingularisation of ALC spaces with isolated conical singularities. The talk is partially based on joint work with Mark Haskins and Johannes Nordstrm. We will describe the construction of complete non-compact Ricci-flat manifolds of dimension 7 and 8 with holonomy $G_{2}$ and Spin(7) respectively. The examples we consider all have non-maximal volume growth and an asymptotic geometry, so-called ALC geometry, that generalises to higher dimension the asymptotic geometry of 4-dimensional ALF hyperkähler metrics. The interest in these metrics is motivated by the study of codimension 1 collapse of ...

53C10 ; 53C25 ; 53C29 ; 53C80

... Lire [+]

Research talks;Analysis and its Applications;Algebraic and Complex Geometry

In this talk I will discuss the existence of complete extremal metrics on the complement of simple normal crossings divisors in compact Kähler manifolds, and stability of pairs, in the toric case. Using constructions of Legendre and Apostolov-Calderbank-Gauduchon, we completely characterize when this holds for Hirzebruch surfaces. In particular, our results show that relative stability of a pair and the existence of extremal Poincaré type/cusp metrics do not coincide. However, stability is equivalent to the existence of a complete extremal metric on the complement of the divisor in our examples. It is the Poincaré type condition on the asymptotics of the extremal metric that fails in general.
This is joint work with Vestislav Apostolov and Hugues Auvray. In this talk I will discuss the existence of complete extremal metrics on the complement of simple normal crossings divisors in compact Kähler manifolds, and stability of pairs, in the toric case. Using constructions of Legendre and Apostolov-Calderbank-Gauduchon, we completely characterize when this holds for Hirzebruch surfaces. In particular, our results show that relative stability of a pair and the existence of extremal Poincaré type/cusp ...

53C55 ; 53C25 ; 30F45

... Lire [+]

Research talks;Partial Differential Equations;Algebraic and Complex Geometry

By a gluing construction, we produce steady Kähler-Ricci solitons on equivariant crepant resolutions of $\mathbb{C}^n/G$, where $G$ is a finite subgroup of $SU(n)$, generalizing Cao’s construction of such a soliton on a resolution of $\mathbb{C}^n/\mathbb{Z}_n$.
This is joint work with Olivier Biquard.

53C25 ; 53C44 ; 53C55

... Lire [+]

Research talks;Geometry

An $R$-space is a compact homogeneous space obtained as an orbit of the isotropy representation of a Riemannian symmetric space. It is known that each $R$-space has the canonical embedding into a Kähler $C$-space as a real form which is a compact embedded totally geodesic Lagrangian submanifold. The minimal Maslov number of Lagrangian submanifolds in symplectic manifolds is an invariant under Hamiltonian isotopies and very fundamental to the study of the Floer homology for intersections of Lagrangian submanifolds. In this talk we provide a Lie theoretic formula for the minimal Maslov number of $R$-spaces canonically embedded in Einstein-Kähler $C$-spaces and discuss several examples of the calculation by the formula. An $R$-space is a compact homogeneous space obtained as an orbit of the isotropy representation of a Riemannian symmetric space. It is known that each $R$-space has the canonical embedding into a Kähler $C$-space as a real form which is a compact embedded totally geodesic Lagrangian submanifold. The minimal Maslov number of Lagrangian submanifolds in symplectic manifolds is an invariant under Hamiltonian isotopies and very fundamental to the ...

53C55 ; 53C25

... Lire [+]

ISBN 978-0-8218-2111-4

Memoirs of the american mathematical society , 0700

Localisation : Collection 1er étage

géométrie différentielle globale # super-géométrie # super-variété # variété Kalhérienne

53C25 ; 53C30

... Lire [+]

- 61 p.

Bonner mathematische schriften , 0267

Localisation : Publication 1er étage

variété riemanienne spéciale # groupe de Lie nilpotent # variété homogène

53C25 ; 22E25 ; 53C30

... Lire [+]

- xvi; 192 p.
ISBN 978-1-4704-1047-6

Graduate studies in mathematics , 0152

Localisation : Collection 1er étage;Réserve

géométrie différentielle # géométrie de Kähler # métrique de Kähler-Einstein # noyau de Bergman

53-02 ; 53C55 ; 53C25 ; 14L24 ; 32Q20

... Lire [+]

- 183 p.
ISBN 978-0-8247-6555-2

Lecture notes in pure and applied mathematics , 0021

Localisation : Ouvrage RdC (YANO)

sous-variétés anti-invariantes # variété kählérienne # variété riemannienne # variété sasakienne

32C17 ; 53B25 ; 53B35 ; 53C15 ; 53C25

... Lire [+]

- 105 p.
ISBN 978-0-8218-3166-3

SMF/AMS texts and monographs , 0013

Localisation : Collection 1er étage

métrique de Einstein # structure Kälherienne # symétrie asymptotique # espace de Hölder pondéré # espace symétrique de rang 1 # structure de contact # métrique quaternionique de Kälher # espace de twister

53C25 ; 52C15 ; 32L25

... Lire [+]

- 97 p.
ISBN 978-85-244-0216-6

Publicacoes matematicas

Localisation : Salle de manutention

variété presque hermitienne # métrique # métrique extrème # variété presque complexe # problème de Yamabé

53C15 ; 53C55 ; 58E11 ; 53C25

... Lire [+]

- X-152 p.
ISBN 978-3-7643-9908-5

Oberwolfach Seminars , 0040

Localisation : Ouvrage RdC (BAUM)

géométrie différentielle conforme # Q-courbure # invariant conforme

53A30 ; 53B15 ; 53B20 ; 53B25 ; 53B30 ; 53B50 ; 53C05 ; 53C10 ; 53C15 ; 53C21 ; 53C25 ; 53C27 ; 53C28 ; 53C29 ; 53C50 ; 53C80 ; 58J50 ; 32V05

... Lire [+]