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math.GR2009★ 7 cited
Essential p-dimension of algebraic tori
Roland Lötscher, Mark MacDonald, Aurel Meyer +1
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. Karpenk…
math.RA2009★ 2 cited
An upper bound on the essential dimension of a central simple algebra
Aurel Meyer, Zinovy Reichstein
We prove a new upper bound on the essential p-dimension of the projective linear group PGLn.