Research output per year
Research output per year
Personal profile
Teaching
Ph.D. in mathematics from MIT 1969
Keywords
- Functional equations
- Harmonic analysis
Areas of expertise
- Representations on eigenspaces
- Functional equations on groups
Fingerprint
Dive into the research topics where Henrik Stetkær is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
Research output
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The cosine addition and subtraction formulas on non-abelian groups: Addition and subtraction formulas: O. Ajebbar et al.
Ajebbar, O., Elqorachi, E. & Stetkær, H., Dec 2024, In: Aequationes Mathematicae. 98, 6, p. 1657-1676 20 p.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Open Access -
The equation f(xy)=f(x)h(y)+g(x)f(y) and representations on C2
Stetkær, H., Oct 2024, In: Aequationes Mathematicae. 98, 5, p. 1419-1438 20 p.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Open Access1 Citation (Scopus) -
Exponential polynomials and the sine addition law on magmas
Stetkær, H., Dec 2023, In: Aequationes Mathematicae. 97, 5-6, p. 963-979 17 p.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Open AccessFile1 Citation (Scopus) -
A Levi–Civita functional equation on semigroups
Stetkær, H., Feb 2022, In: Aequationes Mathematicae. 96, p. 115-127Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
1 Citation (Scopus) -
Homomorphisms of Product Semigroups
Stetkær, H., Apr 2022, In: Results in Mathematics. 77, 2, 60.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
5 Citations (Scopus)
Activities
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Uniwersytet Slaski, Instytut Matematyki
Stetkær, H. (Visiting researcher)
30 Sept 2012 → 6 Oct 2012Activity: Visiting an external institution types › Visiting an external academic institution
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Levi-Civita's functional equation
Stetkær, H. (Lecturer)
15 Sept 2011Activity: Presentations, memberships, ownership and other activities › Lecture and oral contribution
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14th International Conference on Functional Equations and Inequalities
Stetkær, H. (Participant)
11 Sept 2011 → 17 Sept 2011Activity: Participating in or organising an event types › Participation in or organisation af a conference
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On the cocycle equation
Stetkær, H. (Lecturer)
20 Jun 2011Activity: Presentations, memberships, ownership and other activities › Lecture and oral contribution
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49th International Symposium on Functional Equations
Stetkær, H. (Participant)
19 Jun 2011 → 26 Jun 2011Activity: Participating in or organising an event types › Participation in or organisation af a conference