Word Maps of Chevalley Groups Over Infinite Fields

Commutator Lengths in General Linear Group Over a Skew-Field

“…The skew-field was assumed to be finite-dimensional over its center and not coinciding with it. Later Kursov's result was rediscovered by Gordeev and Egorchenkova in [4] (see also [3]), where the corresponding analog of the Gauss decomposition with given semisimple part was proved.…”