The wild McKay point-counting conjecture for quotient singularities
The wild McKay point-counting conjecture for quotient singularities
Let be a local field with finite residue field of cardinality , let be a faithful representation of a finite group , and let . Suppose that for every , the fixed-point locus has codimension at least two, and let be a crepant resolution. Write for the preimage of the origin . For a continuous homomorphism , let denote its weight, and let be the corresponding mass.
Point-counting realization of the wild McKay conjecture. If the residue field is finite, then
This is the finite-residue-field point-counting form of the motivic wild McKay correspondence, relating the special fiber of a crepant resolution to a weighted count of -torsors over . It is posed as a consequence of the motivic conjecture and remains unresolved in the stated generality.
Sources & referencesView supporting material
Primary source
Melanie Machett Wood and Takehiko Yasuda, “Mass formulas for local Galois representations and quotient singularities I: a comparison of counting functions”, arXiv:1309.2879 (2015).
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