2012
DOI: 10.1090/noti909
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WHAT IS...Essential Dimension?

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Cited by 8 publications
(7 citation statements)
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“…, a n ) but not over any proper subfield. This proves that in fact ed k Rep Q,n = n. See [22] for the details.…”
Section: Essential Dimension Of Functorsmentioning
confidence: 58%
“…, a n ) but not over any proper subfield. This proves that in fact ed k Rep Q,n = n. See [22] for the details.…”
Section: Essential Dimension Of Functorsmentioning
confidence: 58%
“…Case I. We need to consider the groups ST 28 -ST 32 , ST 34 , ST 35 and ST 37 , with p = 2. With the exception of ST 32 , each of these groups has a reflection of order 2 and thus is ruled out by Proposition 3.1(e).…”
Section: Conclusion Of the Proof Of Theorem 11(b)mentioning
confidence: 99%
“…Case II. Here p = 3 and we need to consider only two groups: ST 34 and ST 35 . The group ST 35 has trivial centre and thus is ruled out by Proposition 3.1(c).…”
Section: Conclusion Of the Proof Of Theorem 11(b)mentioning
confidence: 99%
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“…For example, it is used to bound the minimum number of parameters of generic Galois extensions (see [5,Section 8.2]). The introductory article [14] and the survey papers [12] and [13] explain the theory of essential dimension and its applications.…”
Section: Introductionmentioning
confidence: 99%