2 http://hdl.handle.net/10338.dmlcz/105988 2 The nil-degree of a torsion-free Abelian group http://hdl.handle.net/10338.dmlcz/106006 The nil-degree of a torsion-free Abelian group Thu, 05 Jun 2008 21:05:02 GMT On the individual ergodic theorem on a logic http://hdl.handle.net/10338.dmlcz/106005 On the individual ergodic theorem on a logic Thu, 05 Jun 2008 21:04:59 GMT A characterization of $C(X)$ http://hdl.handle.net/10338.dmlcz/106004 A characterization of $C(X)$ Thu, 05 Jun 2008 21:04:56 GMT Commutative semigroup rings which are principal ideal rings http://hdl.handle.net/10338.dmlcz/106003 Commutative semigroup rings which are principal ideal rings Thu, 05 Jun 2008 21:04:53 GMT