A characterization of some groups of order 22n+1 by their endomorphism semigroupsGramushnjak, Tatjana; Puusemp, PeeterAlgebra, geometry and mathematical physics : Baltic-Nordic Workshop : October 11-13, 2007, Göteborg, Sweden : abstracts2007 / p. 5

Graded q-diferential algebra with differential D3=0 on the quantum plane GLp,q(2)Bazunova, NadeždaAlgebra, geometry and mathematical physics : Baltic-Nordic Workshop : October 11-13, 2007, Göteborg, Sweden : abstracts2007 / p. 3