On the essential dimension of cyclic p-groups

Let p be a prime number, let K be a field of characteristic not p, containing the p-th roots of unity, and let r >= 1 be an integer. We compute the essential dimension of Z/p(r) Z over K (Theorem 4.1). In particular,


Published in:
Inventiones Mathematicae, 171, 175-189
Year:
2008
Laboratories:




 Record created 2010-11-30, last modified 2018-03-17


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