Pseudo-reflection groups and essential dimension
نویسندگان
چکیده
We give a simple formula for the essential dimension of a finite pseudoreflection group at a prime p and determine the absolute essential dimension for most irreducible pseudo-reflection groups. We also study the “poor man’s essential dimension” of an arbitrary finite group, an intermediate notion between the absolute essential dimension and the essential dimension at a prime p.
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ورودعنوان ژورنال:
- J. London Math. Society
دوره 90 شماره
صفحات -
تاریخ انتشار 2014