proved the Hübsch conjecture for isolated conic singularities, satisfied Poincarè duality, and aligned with some of the properties of the Kähler package. Satisfaction of all of the Kähler package by this Perverse sheaf for higher codimension strata is still an open problem. Markus Banagl (M. Banagl, 2010; M. Banagl, et al., 2014) addressed the Hubsch conjecture through intersection spaces for higher codimension strata inspired by Hubsch's work (T. Hubsch, 1992, 1997; P. Green and T. Hubsch, 1988) and A. Rahman's original ansatz (A. Rahman, 2009) for isolated singularities. See also Mixed Hodge module Mixed perverse sheaf Intersection homology L² cohomology Conifold String Theory Supersymmetry Notes References Further reading Intersection homology and perverse sheaves, notes by Bruno Klingler. Homological algebra Morse theory