Author

Henrik Stetkær

Observed names: H. Stetkaer, H. Stetkær, HENRIK STETKAER, Henrik Stetkaer, Henrik Stetkaer-hansen, Stetkær, H., Stetkær, Henrik

Institution: Aarhus University

Observed institution: Aarhus University

ORCID: 0000-0002-5059-9440

Observed ORCID: 0000-0002-5059-9440

OpenAlex ID: A5090955689

Functional Equations on Groups

2013 · Henrik Stetkær · WORLD SCIENTIFIC eBooks · 207

Functional equations on abelian groups with involution

1997 · H. Stetkær · Aequationes Mathematicae · 112

A variant of d’Alembert’s functional equation

2014 · Henrik Stetkær · Aequationes Mathematicae · 54

d’Alembert’s other functional equation on monoids with an involution

2014 · Bruce Ebanks, Henrik Stetkær · Aequationes Mathematicae · 50

On Wilson’s functional equations

2014 · Bruce Ebanks, Henrik Stetkær · Aequationes Mathematicae · 33

D'Alembert's equation and spherical functions

1994 · Henrik Stetkaer · Aequationes Mathematicae · 32

D'Alembert's functional equations on metabelian groups

2000 · H. Stetkær · Aequationes Mathematicae · 31

Wilson's functional equations on groups

1995 · Henrik Stetkaer · Aequationes Mathematicae · 26

Van Vleck’s functional equation for the sine

2015 · Henrik Stetkær · Aequationes Mathematicae · 25

A factorization theorem for analytic functions operating in a Banach algebra

1971 · Philip Curtis, Henrik Stetkaer · Pacific Journal of Mathematics · 25

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A Generalization of a Theorem of Wienholtz Concerning Essential Selfadjointness of Singular Elliptic Operators.

1966 · Henrik Stetkaer-hansen · MATHEMATICA SCANDINAVICA · 24

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Functional equations and matrix-valued spherical functions

2005 · Henrik Stetkær · Aequationes Mathematicae · 23

On the trigonometric subtraction and addition formulas

2000 · T. A. Poulsen, H. Stetkær · Aequationes Mathematicae · 23

Kannappan’s functional equation on semigroups with involution

2015 · Henrik Stetkær · Semigroup Forum · 22

D'Alembert's functional equation on groups

2013 · Henrik Stetkær · Banach Center Publications · 18

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On multiplicative maps

2001 · Henrik Stetkær · Semigroup Forum · 17

Extensions of the sine addition law on groups

2018 · Henrik Stetkær · Aequationes Mathematicae · 16

Properties of d’Alembert functions

2009 · Henrik Stetkær · Aequationes Mathematicae · 16

Functional equations involving means of functions on the complex plane

1998 · H. Stetkær · Aequationes Mathematicae · 16

On the quadratic functional equation on groups

2006 · Peter de Place Friis, Henrik Stetkaer · Publicationes Mathematicae Debrecen · 15

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On Jensen’s functional equation on groups

2003 · Henrik Stetkær · Aequationes Mathematicae · 15

The small dimension lemma and d’Alembert’s equation on semigroups

2020 · Henrik Stetkær · Aequationes Mathematicae · 14

D'Alembert's and Wilson's functional equations for vector and $2\times 2$ matrix valued functions

2000 · Henrik Stetkær · MATHEMATICA SCANDINAVICA · 14

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The kernel of the second order Cauchy difference on semigroups

2016 · Henrik Stetkær · Aequationes Mathematicae · 13

On operator-valued spherical functions

2005 · Henrik Stetkær · Journal of Functional Analysis · 13

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Works count: 88

Citation count: 1,040

H-index: 16

I10-index: 28