Linear duals of graded bundles and higher analogues of (Lie) algebroids

Abstract

Graded bundles are a class of graded manifolds which represent a natural generalisation of vector bundles and include the higher order tangent bundles as canonical examples. We present and study the concept of the linearisation of graded bundle which allows us to define the notion of the linear dual of a graded bundle. They are examples of double structures, graded-linear ($\mathcal{G}\mathcal{L}$) bundles, including double vector bundles as a particular case. On $\mathcal{G}\mathcal{L}$-bundles we define what we shall call weighted algebroids, which are to be understood as algebroids in the category of graded bundles. They can be considered as a geometrical framework for higher order Lagrangian mechanics. Canonical examples are reductions of higher tangent bundles of Lie groupoids. Weighted algebroids represent also a generalisation of $\mathcal{V}\mathcal{B}$-algebroids as defined by Gracia-Saz & Mehta and the $\mathcal{L}\mathcal{A}$-bundles of Mackenzie. The resulting structures are strikingly similar to Voronov's higher Lie algebroids, however our approach does not require the initial structures to be defined on supermanifolds.

The preprint has been reworked and improved, including several notational changes and further clarifying comments. 32 pages. Further comments are welcomed

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• Vector bundles over Lie groupoids and algebroids
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• Remarks on Contact and Jacobi Geometry
• Higher order mechanics on graded bundles
• Pre-Courant Algebroids
• The Geometrisation of $\mathbb{N}$-manifolds of degree 2
• Reductions: precontact versus presymplectic
• Graded Bundles in the Category of Lie Groupoids
• VB-structures and generalizations
• Polarisation of Graded Bundles
• Solvable Lie Algebras of Vector Fields and a Lie's Conjecture
• Introduction to graded bundles
• Lifting statistical structures
• On n-tuple principal bundles
• Duality for graded manifolds
• Higher-Order Analogs of Lie Algebroids via Vector Bundle Comorphisms
• Connections Adapted to Non-Negatively Graded Structures
• Modular classes of Q-manifolds: a review and some applications
• On the concept of a filtered bundle
• The category of ${\mathbb{Z}}_2^n$-supermanifolds
• $A_{\infty }$-Algebras from Lie Pairs
• Transitive nilpotent Lie algebras of vector fields and their Tanaka prolongations