A new 4-dimensional isolated locally simply-connected symplectic singularity is constructed, with non-reduced projective tangent cone, together with all 12 of its Q-factorial terminalisations.
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A new addition to the zoo of isolated symplectic singularities
A new 4-dimensional isolated locally simply-connected symplectic singularity is constructed, with non-reduced projective tangent cone, together with all 12 of its Q-factorial terminalisations.