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48 results for Koszul complex

In this note, we study the Koszul-Brylinski homology of holomorphic Poisson manifolds. We show that it is isomorphic to the cohomology of a certain smooth complex Lie algebroid with values in the Evens-Lu-Weinstein duality module. As a consequence, we prove that the Evens-Lu-Weinstein pairing on Koszul-Brylinski homolo…

2009-03-29abs ↗pdf ↗

Quantizes the relationship between Koszul and Schouten brackets in Poisson geometry.

problem Quantizing the relationship between Koszul and Schouten brackets in Poisson geometry.
method Employing Voronov's thick morphism technique and quantum Mackenzie-Xu transformations in the framework of LL_\infty-algebroids.
result Quantizes the LL_\infty-morphism into a single linear operator, a formal Fourier integral operator.

Defines Jacobi-Koszul-Vinberg structures on Jacobi-left-symmetric algebroids.

problem No specific problem stated; focuses on new structure definition.
method Definition and properties of Jacobi-Koszul-Vinberg structures on Jacobi-left-symmetric algebroids.
result Defines a new structure on Jacobi-left-symmetric algebroids.

Holomorphic Koszul-Brylinski homology studied via Dolbeault cohomology.

problem Investigating holomorphic Koszul-Brylinski homology on Poisson manifolds.
method Using Dolbeault cohomology to derive properties of holomorphic Koszul-Brylinski homology.
result Obtained the Leray-Hirsch theorem, Mayer-Vietoris sequence, and Künneth theorem for holomorphic Koszul-Brylinski homology.

The paper computes KV cochain differentials and their geometric implications.

problem Deformation theory of flat and torsion-free affine connections.
method Explicit computation of KV cochain differentials and their relations to geometric transformations.
result KV algebra with non-vanishing second cohomology group.

The paper introduces new structures for left-symmetric algebroids.

problem Developing new mathematical structures for left-symmetric algebroids.
method Introducing Koszul-Vinberg-Nijenhuis structures and related concepts.
result Koszul-Vinberg-Nijenhuis structures provide a hierarchy of structures.

Let X and Y be finite-type CW-complexes (X connected, Y simply connected), such that the rational cohomology ring of Y is a k-rescaling of the rational cohomology ring of X. Assume H^*(X,Q) is a Koszul algebra. Then, the homotopy Lie algebra pi_*(Omega Y) tensor Q equals, up to k-rescaling, the graded rational Lie alge…

2001-10-28abs ↗pdf ↗

The Hesse-Koszul flow converges to the Hesse-Einstein metric on compact Hessian manifolds.

problem Existence and convergence of Hesse-Einstein metrics on compact Hessian manifolds.
method Study of the Hesse-Koszul flow and its convergence properties.
result The flow converges to the unique Hesse-Einstein metric under certain conditions.

Characterizes real left symmetric algebras with positive definite Koszul form and related Kähler-Einstein structures.

problem Characterizing real left symmetric algebras with positive definite Koszul form.
method Analyzes the properties of left multiplication operators and symmetric bilinear forms.
result Provides a complete characterization of real left symmetric algebras with positive definite Koszul form.

Paper proves Koszul duality for weighted A-infinity algebras.

problem Koszul duality for weighted A-infinity algebras.
method Constructs new box tensor product for weighted A-infinity bimodules and verifies correspondence between maps and bimodules.
result Proves Koszul duality result between weighted A-infinity algebras.

Study on deformation of affine structures on Lie groups using cohomology.

problem Understanding the gap between global topological invariants and left-invariant affine structures.
method Comparing De Rham and Koszul-Vinberg cohomology groups on Lie groups SO(2), H3(R), and SGal(3).
result Vanishing theorem for the second KV-cohomology group, proving structural rigidity of orbits.

Study of Batalin-Vilkovisky algebra on Poisson manifolds with diagonalizable modular symmetry.

problem Exploring Batalin-Vilkovisky algebra structures on Poisson manifolds with specific symmetry conditions.
method Analysis of twisted Poincaré duality and mixed complex structure, combined with Kontsevich's deformation quantization and Koszul duality.
result Generalization of Batalin-Vilkovisky algebra structure to Poisson manifolds with diagonalizable modular symmetry.

Study on deformations of pre-symplectic structures using an L-infinity algebra.

problem Deformation theory of pre-symplectic structures.
method Parametrization of deformations using Koszul L-infinity algebra.
result A quotient of the Koszul L-infinity algebra is isomorphic to the L-infinity algebra controlling foliations.

The semi-classical data attached to stacks of algebroids in the sense of Kashiwara and Kontsevich are Maurer-Cartan elements on complex manifolds, which we call extended Poisson structures as they generalize holomorphic Poisson structures. A canonical Lie algebroid is associated to each Maurer-Cartan element. We study …

2009-04-26abs ↗pdf ↗

The cohomology of affine structures on Lie groups is compared with that of Koszul-Vinberg algebras.

problem Comparing De Rham cohomology and KV-cohomology on Lie groups SO(2), H3(R), and Galilei group SGal(3).
method Constructing a three vertex directed graph connecting associative algebras, KV-cohomology, and Lie groups.
result Evaluating the algebraic quotient of the cohomology groups.

Paper constructs LL_{\infty}-algebroids from homotopy Poisson structures.

problem Homotopy Poisson structures and their algebraic properties.
method Introduces thick morphisms and LL_{\infty}-morphisms.
result Establishes an LL_{\infty}-algebra structure on forms.

Study complex solvmanifolds with trivial canonical bundle and hypercomplex geometry.

problem Characterize and produce examples of complex solvmanifolds with trivial canonical bundle.
method Characterize invariant trivializing sections using Koszul 1-form, provide algebraic obstructions, and exhibit specific examples.
result New examples of complex solvmanifolds with trivial canonical bundle and algebraic obstructions for triviality.

Study submanifolds in Koszul-Vinberg geometry, a blend of Poisson and pseudo-Riemannian structures.

problem Understanding submanifolds in Koszul-Vinberg geometry.
method Analyzing submanifolds within the framework of Koszul-Vinberg manifolds, considering developments in Poisson submanifolds.
result Developed methods to analyze submanifolds in this geometric setting.

Under certain integrability and geometric conditions, we prove division theorems for the exact sequences of holomorphic vector bundles and improve the results in the case of Koszul complex. By introducing a singular Hermitian structure on the trivial bundle, our results recover Skoda's division theorem for holomorphic …

2011-02-19abs ↗pdf ↗

Constructs Koszul dual algebras for star-shaped diagrams in 3-manifolds.

problem Constructing algebraic structures for 3-manifold homology.
method Uses graphical calculus to construct Koszul dual weighted A\mathcal{A}_{\infty}-algebras and dualizing bimodules.
result Proves duality of constructed algebras and bimodules.

Introduces a new operator generating higher Koszul brackets on differential forms.

problem Developing a new operator for higher Koszul brackets on differential forms.
method Introducing a formal \hbar-differential operator ΔΔ generating higher Koszul brackets on differential forms.
result Established properties of the introduced BV type operator and its inclusion in a one-parameter family.

This work is devoted to an intrinsic cohomology theory of Koszul-Vinberg algebras and their modules. Our results may be regarded as improvements of the attempt by Albert Nijenhuis in [NA]. The relationships between the cohomology theory developed here and some classical problems are pointed out, e.g. extensions of alge…

2002-02-25abs ↗pdf ↗

We show that Verdier duality for certain sheaves on the moduli spaces of graphs associated to Koszul operads corresponds to Koszul duality of operads. This in particular gives a conceptual explanation of the appearance of graph cohomology of both the commutative and Lie types in computations of the cohomology of the ou…

2007-02-12abs ↗pdf ↗

Finite presentations for skein algebras linked to gauge field theory.

problem Understanding finite presentations for skein algebras and their relationship to gauge field theory.
method Provided finite presentations and deduced properties of stated skein algebras.
result Stated skein algebras are Koszul and isomorphic to quantum moduli algebras in gauge field theory.

The abstract discusses cohomologies and deformations of Rota-Baxter operators on Lie algebroids and Koszul-Vinberg structures.

problem Characterizing and studying deformations and cohomologies of relative Rota-Baxter operators.
method Constructing graded Lie algebras and studying their Maurer-Cartan elements, cohomology, and deformations.
result Homomorphisms between cohomology groups of relative Rota-Baxter operators and deformation cohomology groups of left-symmetric algebroids.

We consider the semi-classical Dirac operator coupled to a magnetic potential on a large class of manifolds including all metric contact manifolds. We prove a sharp local Weyl law and a bound on its eta invariant. In the absence of a Fourier integral parametrix, the method relies on the use of almost analytic continuat…

2015-11-27abs ↗pdf ↗

For each holomorphic vector bundle we construct a holomorphic bundle 2-gerbe that geometrically represents its second Beilinson-Chern class. Applied to the cotangent bundle, this may be regarded as a higher analogue of the canonical line bundle in complex geometry. Moreover, we exhibit the precise relationship between …

2016-01-19abs ↗pdf ↗

In this paper we aim to understand the category of stable-Yetter-Drinfeld modules over enveloping algebra of Lie algebras. To do so, we need to define such modules over Lie algebras. These two categories are shown to be isomorphic. A mixed complex is defined for a given Lie algebra and a stable-Yetter-Drinfeld module o…

2011-08-13abs ↗pdf ↗

The McCool group, denoted PΣnPΣ_n, is the group of pure symmetric automorphisms of a free group of rank nn. The cohomology algebra H(PΣn,Q)H^*(PΣ_n, \mathbb{Q}) was determined by Jensen, McCammond and Meier. We prove that H(PΣn,Q)H^*(PΣ_n, \mathbb{Q}) is a non-Koszul algebra for n4n \geq 4, which answers a question of Cohen and Pr…

2014-07-17abs ↗pdf ↗