Information on the conference in Ring Theory (Porto Alegre, Brazil, September, 2008)

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Mathematics competition 2009

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Weak comultiplication modules over a pullback of commutative local Dedekind domains von Reza Ebrahimi Atani, Shahabaddin Ebrahimi Atani

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Prime radical of Ore extensions over δ -rigid rings von Bhat, V.K.

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All difference family structures arise from groups von Boykett, T.

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Some classes of directoid groups von Gardner, B.J., Parmenter, M.M.

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Rings of functions on non-abelian groups von Maxson, C.J.

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On action of outer derivations on nilpotent ideals of Lie algebras von Maksimenko, D.V.

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Algebra in the Stone-Čech compactification: applications to topologies on groups von Protasov, I.V.

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Tiled orders of width 3 von Zhuravlev, V., Zhuravlyov, D.

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A commutative Bezout PM* domain is an elementary divisor ring von Zabavsky, B., Gatalevych, A.

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Towards practical private information retrieval from homomorphic encryption von Zhuravlev, D.

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Derived equivalence classification of generalized multifold extensions of piecewise hereditary algebras of tree type von Asashiba, H., Kimura, M.

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On inverse subsemigroups of the semigroup of orientation-preserving or orientation-reversing transformations von Catarino, P., Higgins, P.M., Levi, I.

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On c-normal and hypercentrally embeded subgroups of finite groups von Ning Su, Yanming Wang

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On fibers and accessibility of groups acting on trees with inversions von Mahmood, R.M.S.

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Recursive formulas generating power moments of multi-dimensional Kloosterman sums and m-multiple power moments of Kloosterman sums von Kim, D.S.

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Symmetric modules over their endomorphism rings von Ungor, B., Kurtulmaz, Y., Halicioglu, S., Harmanci, A.

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On various parameters of Zq-simplex codes for an even integer q von Chella Pandian, P., Durairajan, C.

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Ultrafilters on G-spaces von Petrenko, O.V., Protasov, I.V.

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