$Faculty cover photo$

Helmut H. Hofer

Helmut H. Hofer | Math at Math, Princeton University0 Followers

Professor Helmut H. Hofer is a leading figure in the field of mathematics, currently serving as a Visiting Lecturer with the Rank of Professor in the Department of Mathematics at Princeton University. His research primarily focuses on the intricate areas of dynamical systems, symplectic geometry, and contact geometry. With a profound understanding of these complex subjects, Professor Hofer has contributed significantly to advancing mathematical theories and applications. His work not only enriches the academic community at Princeton but also influences the broader mathematical landscape through his innovative approaches and insights.

Research Interests

Dynamical systems symplectic geometry contact geometry

Publications

1 - Lagrangian embeddings and critical point theory,Annales de l'Institut Henri Poincaré C, Analyse non linéaire

, 407-462, 1985-12-01

2 - Practice and Prospects of Medium-term Economic Forecasting,Jahrbücher für Nationalökonomie und Statistik

Helmut Hofer , Klaus Weyerstraß , Torsten Schmidt ,

, 153-171, 2011-02-01

3 - Why Are Mothers Working Longer Hours in Austria than in Germany? A Comparative Microsimulation Analysis*,Fiscal Studies

Helene Dearing , Helmut Hofer , Christine Lietz , Rudolf Winter‐Ebmer , Katharina Wrohlich ,

, 463-495, 2007-12-01

4 - Labour market effects of apprenticeship training in Austria,International Journal of Manpower

Helmut Hofer , Christine Lietz ,

, 104-122, 2004-01-01

5 - Determinants for the transition from work into retirement in Europe,IZA Journal of European Labor Studies

Monika Riedel , Helmut Hofer , Birgit Wögerbauer ,

, 2015-02-12

6 - The Sublingua and Tongue of Tupaia (Scandentia, Mammalia): A Scanning Electron Microscope Study,Folia Primatologica

Helmut O. Hofer , Anton Castenholz , Hellmuth Zöltzer ,

, 185-194, 1993-02-08

7 - Existence and multiplicity result for a class of second order elliptic equations,Proceedings of the Royal Society of Edinburgh: Section A Mathematics

, 83-92, 1981-01-01

8 - A note on the topological degree at a critical point of mountainpass-type,Proceedings of the American Mathematical Society

, 309-315, 1984-01-01

9 - On strongly indefinite functionals with applications,Transactions of the American Mathematical Society

, 185-214, 1983-01-01

10 - On the Sublingual Structures of Tarsius (Prosimiae, Tarsiiformes) and Some Platyrrhine Monkeys (Platyrrhina, Simiae, Primates) with Casual Remarks on the Histology of the Tongue,Folia Primatologica

Helmut O. Hofer ,

, 297-314, 1977-01-31

11 - Wage Discrimination Against Immigrants in Austria?,LABOUR

Helmut Hofer , Gerlinde Titelbach , Rudolf Winter‐Ebmer , Alexander Ahammer ,

, 105-126, 2017-04-18

12 - A general Fredholm theory I: a splicing-based differential geometry,Journal of the European Mathematical Society

Helmut W. Hofer , Kris Wysocki , Eduard Zehnder ,

, 841-876, 2007-12-31

13 - The Weinstein conjecture for planar contact structures in dimension three,Commentarii Mathematici Helvetici

Casim Abbas , Kai Cieliebak , Helmut W. Hofer ,

, 771-793, 2005-12-31

14 - Almost existence from the feral perspective and some questions,Ergodic Theory and Dynamical Systems

JOEL W. FISH , HELMUT H. W. HOFER ,

, 792-834, 2021-06-10

15 - Crista sagittalis externa in the Skull of Pan troglodytes and its Bearing on the Reconstruction of the Head of the Robust Type of Australopithecus,Folia Primatologica

Helmut O. Hofer ,

, 469-475, 1973-12-08

16 - On the Weinstein conjecture in higher dimensions,Commentarii Mathematici Helvetici

Peter Albers , Helmut W. Hofer ,

, 429-436, 2009-06-30

Share Helmut's Profile