McKay correspondence
McKay correspondence
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发表时间:
1997-02
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通讯作者:
M. Reid
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作者:
M. Reid
As you can see, the statement is still too vague because I don’t say what “natural” means, and what “compatibilities” to expect. At present it seems most useful to think of this statement as pointer towards the truth, rather than the truth itself (compare Main Conjecture 4.1). The conjecture is known for n = 2 (Kleinian quotient singularities, Du Val singularities). McKay’s original treatment was mainly combinatorics [McK]. The other important proof is that of Gonzales-Sprinberg and Verdier [GSp-V], who introduced the GSp–V or tautological sheaves, also my main hope for the correspondence (1). For n = 3 a weak version of the correspondence (2) is proved in [IR]. We hope that a modification of this idea will work in general for (2); for details, see §3.