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Regular version of the site

Article

Rationality and the FML invariant

Journal of the Ramanujan Mathematical Society. 2013. Vol. 28A. No. Special Issue-2013 dedicated to C.S.Seshadri's 80th birthday. P. 409-415.

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