Essential $p$-dimension of $\operatorname {\mathbf {PGL}}(p^2)$
نویسندگان
چکیده
منابع مشابه
ESSENTIAL p-DIMENSION OF ALGEBRAIC TORI
The essential dimension is a numerical invariant of an algebraic group G which may be thought of as a measure of complexity of G-torsors over fields. A recent theorem of N. Karpenko and A. Merkurjev gives a simple formula for the essential dimension of a finite p-group. We obtain similar formulas for the essential p-dimension of a broader class of groups, which includes all algebraic tori.
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ژورنال
عنوان ژورنال: Journal of the American Mathematical Society
سال: 2010
ISSN: 0894-0347
DOI: 10.1090/s0894-0347-10-00661-2