Courant algebroid and Lie bialgebroid contractions
classification
🧮 math.DG
math-phmath.MP
keywords
structuresbialgebroidscontractionscouranttensorsalgebrasalgebroidalgebroids
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Contractions of Leibniz algebras and Courant algebroids by means of (1,1)-tensors are introduced and studied. An appropriate version of Nijenhuis tensors leads to natural deformations of Dirac structures and Lie bialgebroids. One recovers presymplectic-Nijenhuis structures, Poisson-Nijenhuis structures, and triangular Lie bialgebroids as particular examples.
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