Geodesic
A Ring Variety without an Independent Basis
Matematičeskie zametki, Tome 69 (2001) no. 5, pp. 713-732.

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An example of a ring variety without an independent basis is constructed. It is proved that this variety is the intersection of two independently based varieties. 
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V. Yu. Popov. A Ring Variety without an Independent Basis. Matematičeskie zametki, Tome 69 (2001) no. 5, pp. 713-732. http://geodesic.mathdoc.fr/item/MZM_2001_69_5_a7/

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