Vladimir L. Popov: Rationality and the FML invariant


Submission: 2012, Dec 1

We construct counterexamples to the rationality conjecture regarding the new version of the Makar-Limanov invariant introduced in A. Liendo, G_a-actions of fiber type on affine T-varieties, J. Algebra 324 (2010), 3653--3665.

2010 Mathematics Subject Classification: 14E08, 14E07

Keywords and Phrases: algebraic group, stable rationality, field of invariants

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