| Publication | Date of Publication | Type |
|---|
| Cyclic sequences of periodic sums in \(\beta \mathbb{N} \) | 2024-01-22 | Paper |
| Symmetric colorings of G × Z_2 | 2023-12-16 | Paper |
| Elements of finite order in \(\beta \mathbb{N}\) | 2022-09-20 | Paper |
| Increasing sequences of principal left ideals of $\beta \mathbb{Z}$ are finite | 2022-08-29 | Paper |
| Direct products of null semigroups and rectangular bands in \(\beta\mathbb{N}\) | 2022-03-21 | Paper |
| Finite semigroups in βN and Ramsey theory | 2021-08-13 | Paper |
| Elements of order 2 in $\beta \mathbb{N}$ | 2021-01-25 | Paper |
| When a locally compact monothetic semigroup is compact | 2020-11-02 | Paper |
| A RAMSEY TYPE RESULT FOR LATIN SQUARES | 2020-05-15 | Paper |
| Larger locally compact monothetic semigroups | 2020-03-25 | Paper |
| Idempotents in $\beta G\setminus G$ with only trivial divisors | 2019-12-19 | Paper |
| Counting symmetric colorings of G × ℤ2 | 2019-10-10 | Paper |
| Discrete nonclosed subsets in maximally nondiscrete topological groups | 2019-07-24 | Paper |
| Semigroup completions of locally compact abelian groups | 2019-07-17 | Paper |
| Semigroup extensions of abelian topological groups | 2019-03-14 | Paper |
| A locally compact noncompact monothetic semigroup with identity | 2019-02-01 | Paper |
| Symmetric colorings of the dihedral group | 2018-06-20 | Paper |
| Fixed point compactifications | 2017-06-30 | Paper |
| LEFT MAXIMAL AND STRONGLY RIGHT MAXIMAL IDEMPOTENTS IN G* | 2017-06-01 | Paper |
| Dynamical decompositions of | 2017-05-02 | Paper |
| Right ideal decompositions of \(G^\ast\) | 2016-08-31 | Paper |
| Almost maximal topologies on groups | 2016-07-08 | Paper |
| Finite groups in \(G^{LUC}\) | 2016-02-10 | Paper |
| Three-element bands in \(\beta\mathbb N\) | 2016-01-15 | Paper |
| Discrete subsets and convergent sequences in topological groups | 2015-06-30 | Paper |
| Discontinuity of multiplication and left translations in $\beta G$ | 2015-01-30 | Paper |
| Continuity inGLUC | 2014-10-15 | Paper |
| COUNTING SYMMETRIC COLOURINGS OF THE VERTICES OF A REGULAR POLYGON | 2014-08-04 | Paper |
| Left maximal idempotents in \(G^\ast\) | 2014-07-15 | Paper |
| COUNTING SYMMETRIC BRACELETS | 2014-06-06 | Paper |
| Finer closed left ideal decompositions of \(G^\ast\) | 2014-03-13 | Paper |
| Strongly complete almost maximal left invariant topologies on groups | 2014-01-08 | Paper |
| Radicals of some semigroup algebras | 2013-10-07 | Paper |
| Principal left ideals of β G may be both minimal and maximal | 2013-06-19 | Paper |
| Closed Left Ideal Decompositions of U(G) | 2013-05-28 | Paper |
| Longer chains of idempotents in βG | 2013-03-21 | Paper |
| On closed left ideal decompositions of \(G^{\ast}\) | 2013-01-03 | Paper |
| A nonlinear maximal group topology | 2012-03-21 | Paper |
| \(K(\beta S)\) is not closed | 2011-08-04 | Paper |
| Metrizable refinements of group topologies and the pseudo-intersection number | 2011-07-07 | Paper |
| Almost maximal topologies on semigroups | 2011-06-09 | Paper |
| Ultrafilter semigroups generated by direct sums | 2011-05-11 | Paper |
| Ultrafilters and topologies on groups | 2011-04-11 | Paper |
| Regular idempotents in $\beta S$ | 2010-06-08 | Paper |
| The closure of the smallest ideal of an ultrafilter semigroup | 2010-01-25 | Paper |
| The smallest ideal of \(\beta S\) is not closed | 2009-11-05 | Paper |
| The number of minimal right ideals of $\beta G$ | 2009-06-22 | Paper |
| Regular Homeomorphisms of Finite Order on Countable Spaces | 2009-05-14 | Paper |
| Free groups in the smallest ideal of \(\beta G\) | 2009-04-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3545372 | 2008-12-10 | Paper |
| Finite groups in Stone-Čech compactifications | 2008-08-11 | Paper |
| Topologies on groups determined by discrete subsets | 2008-06-24 | Paper |
| Transformations and Colorings of Groups | 2008-06-18 | Paper |
| Partitions and sums with inverses in Abelian groups. | 2008-03-06 | Paper |
| Local Homomorphisms of Topological Groups | 2008-01-30 | Paper |
| On the ultrafilter semigroup of an Abelian topological group | 2007-07-19 | Paper |
| On topologizing groups | 2007-04-02 | Paper |
| Almost maximal spaces | 2007-02-09 | Paper |
| On the ultrafilter semigroup of a topological group | 2007-01-26 | Paper |
| On extremally disconnected topological groups | 2006-09-13 | Paper |
| On group operations on homogeneous spaces | 2004-02-12 | Paper |
| Partitions of groups into absolutely dense subsets | 2003-09-18 | Paper |
| Weak projectives of finite semigroups | 2003-08-20 | Paper |
| Large rectangular semigroups in Stone-Cech compactifications | 2003-05-14 | Paper |
| On partitions of groups into dense subsets | 2003-04-02 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3148504 | 2002-10-06 | Paper |
| Extremal ultrafilters and topologies on groups | 2002-01-30 | Paper |
| On subsemigroups of \(\beta\mathbb{N}\) and absolute coretracts | 2002-01-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2737315 | 2001-09-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4512289 | 2000-11-01 | Paper |
| Topologies on \(\mathbb Z\) determined by sequences: seven open problems | 2000-10-31 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4940895 | 2000-02-28 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4702624 | 1999-12-09 | Paper |
| On topological groups with finite ultrafilter semigroups | 1999-11-22 | Paper |
| Topological groups with finite semigroups of ultrafilters | 1999-11-22 | Paper |
| Topologies on groups determined by compacta | 1999-11-22 | Paper |
| Topologically free subsets of universal algebras | 1999-11-22 | Paper |
| Topological groups in which each nowhere dense subset is closed | 1999-07-12 | Paper |
| Finite groups in \(\beta\mathbb{N}\) are trivial | 1997-09-18 | Paper |
| The completeness problem for maximal topological groups | 1991-01-01 | Paper |
| POTENTIALLY COMPACT ABELIAN GROUPS | 1991-01-01 | Paper |
| TOPOLOGIES ON ABELIAN GROUPS | 1991-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3483484 | 1990-01-01 | Paper |
| A two-coloring of Cartesian products | 1990-01-01 | Paper |
| A two-coloring of Cartesian products | 1990-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3822415 | 1988-01-01 | Paper |
