Abstract
This volume is dedicated to Professor Heinz Langer to honor him for his outstanding contributions to mathematics. His results in spectral analysis and its applications, in particular in spaces with an indefinite metric, are fundamental. Five main themes emerge in Heinz Langer’s work, some of them are closely connected or have much in common:
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(1)
Spectral theory of operators in spaces with indefinite inner product.
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(2)
Pencils of linear operators (nonlinear eigenvalue problems).
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(3)
Extension theory of operators in spaces with indefinite inner product.
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(4)
Block operator matrices.
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(5)
One-dimensional Markov processes.
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© 2008 Birkhäuser Verlag AG
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Dijksma, A., Gohberg, I. (2008). Heinz Langer and his Work. In: Bart, H., Hempfling, T., Kaashoek, M.A. (eds) Israel Gohberg and Friends. Birkhäuser Basel. https://doi.org/10.1007/978-3-7643-8734-1_20
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DOI: https://doi.org/10.1007/978-3-7643-8734-1_20
Publisher Name: Birkhäuser Basel
Print ISBN: 978-3-7643-8733-4
Online ISBN: 978-3-7643-8734-1
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