Geometric P=W conjecture for Lagrangian tori
Geometric P=W conjecture for Lagrangian tori
Let \mathcal{X}\xymatrix@1@=15pt{\ar[r]&}\Delta be a projective minimal divisorial log terminal type III degeneration of hyperkähler manifolds, let be a smooth fiber, and let be a profound torus. Let f\colon X\xymatrix@1@=15pt{\ar[r]&} B be a Lagrangian fibration with general fiber . Geometric P=W conjecture. For every such fibration, there exists a degeneration \pi\colon\mathcal{X}\xymatrix@1@=15pt{\ar[r]&}\Delta with deformation equivalent to for all such that is isotopic to a profound torus .
This conjecture proposes a geometric explanation for the equality between perverse and weight Hodge numbers. The required degeneration and isotopy are not established in general.
Sources & referencesView supporting material
Primary source
Daniel Huybrechts and Mirko Mauri, “Lagrangian fibrations”, arXiv:2108.10193 (2022).
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