| Publication | Date of Publication | Type |
|---|
| Exponential polynomials and the sine addition law on magmas | 2024-01-08 | Paper |
| A Levi-Civita functional equation on semigroups | 2022-03-22 | Paper |
| Homomorphisms of product semigroups | 2022-02-03 | Paper |
| \(k\)-valued Wilson functions | 2021-12-06 | Paper |
| The small dimension lemma and d'Alembert's equation on semigroups | 2021-04-15 | Paper |
| More about Wilson's functional equation | 2020-05-26 | Paper |
| Extensions of the sine addition law on groups | 2019-03-26 | Paper |
| Extensions of the sine addition formula on monoids | 2018-10-25 | Paper |
| A note on Wilson's functional equation | 2017-10-26 | Paper |
| Kannappan's functional equation on semigroups with involution | 2017-06-30 | Paper |
| The kernel of the second order Cauchy difference on semigroups | 2017-04-28 | Paper |
| The cosine addition law with an additional term | 2016-12-21 | Paper |
| d'Alembert's other functional equation | 2016-11-25 | Paper |
| A link between Wilson's and d'Alembert's functional equations | 2016-05-18 | Paper |
| Van Vleck's functional equation for the sine | 2016-04-06 | Paper |
| A variant of d'Alembert's functional equation | 2015-06-19 | Paper |
| On Wilson's functional equations | 2015-06-01 | Paper |
| Complex Analysis | 2015-04-23 | Paper |
| D'Alembert's other functional equation on monoids with an involution | 2015-04-21 | Paper |
| Functional Equations on Groups | 2014-06-27 | Paper |
| D'Alembert's functional equation on groups | 2013-10-31 | Paper |
| Continuous cocycles on locally compact groups. II | 2011-02-14 | Paper |
| Properties of d'Alembert functions | 2011-02-07 | Paper |
| Continuous cocycles on locally compact groups | 2011-02-02 | Paper |
| Representations, convolution square roots and spherical vectors | 2007-11-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3414175 | 2007-01-08 | Paper |
| On Jensen's functional equation on groups | 2005-08-22 | Paper |
| On operator-valued spherical functions | 2005-08-01 | Paper |
| Functional equations and matrix-valued spherical functions | 2005-06-06 | Paper |
| On a variant of Wilson's functional equation on groups | 2005-01-20 | Paper |
| D'Alembert's and Wilson's functional equations on step 2 nilpotent groups | 2004-10-05 | Paper |
| On multiplicative maps | 2003-07-02 | Paper |
| On the cosine-sine functional equation on groups | 2002-12-01 | Paper |
| D'Alembert's and Wilson's functional equations for vector and $2\times 2$ matrix valued functions | 2001-09-19 | Paper |
| D'Alembert's functional equations on metabelian groups | 2001-04-19 | Paper |
| Functional equations on abelian groups with involution. II | 2000-07-24 | Paper |
| On the trigonometric subtraction and addition formulas | 2000-04-26 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4937972 | 2000-02-21 | Paper |
| Trigonometric functional equations of rectangular type | 1999-06-30 | Paper |
| Generalized rectangular functional equations | 1999-06-03 | Paper |
| Functional equations involving means of functions on the complex plane | 1999-02-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4370043 | 1998-01-14 | Paper |
| Functional equations on abelian groups with involution | 1997-10-09 | Paper |
| On a signed cosine equation of \(N\) summands | 1997-03-23 | Paper |
| Wilson's functional equation on \(\mathbb{C}\) | 1997-03-06 | Paper |
| Wilson's functional equations on groups | 1996-01-09 | Paper |
| D'Alembert's equation and spherical functions | 1994-12-07 | Paper |
| Complete irreducibility and \(\chi\)-spherical representations | 1993-08-12 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3998255 | 1992-09-17 | Paper |
| Ultra-Irreducibility of Induced Representations of Semidirect Products | 1992-06-25 | Paper |
| Ultra-irreducibility of induced representations. | 1991-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3830023 | 1988-01-01 | Paper |
| Scalar irreducibility of eigenspaces of the tangent space of a reductive symmetric space | 1987-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3799213 | 1987-01-01 | Paper |
| Scalar irreducibility of certain eigenspace representations | 1985-01-01 | Paper |
| Scalar irreducibility of Eigenspace Representations associated to a symmetric space. | 1985-01-01 | Paper |
| Remarks on irreducibility of eigenspace representations | 1983-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3035710 | 1983-01-01 | Paper |
| Eigenspace representations of nilpotent lie groups. | 1981-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3944783 | 1981-01-01 | Paper |
| On positive semidefinite solutions of the operator Lyapunov equation | 1979-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4187997 | 1979-01-01 | Paper |
| On Angular Momentum Helmholtz Theorems and Cohomology of Lie Algebras | 1975-01-01 | Paper |
| Invariant Fourier Integral Operators on Lie Groups. | 1975-01-01 | Paper |
| A factorization theorem for analytic functions operating in a Banach algebra | 1971-01-01 | Paper |
| Invariant Pseudo-Differential Operators. | 1971-01-01 | Paper |
