206 citations
- University of HelsinkiFI96 papers
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8 papers · 1 filter
Characterizations of Herglotz-Nevanlinna functions using positive semi-definite functions and the Nevanlinna kernel in several variables
Mitja Nedic
In this paper, we give several characterizations of Herglotz-Nevanlinna functions in terms of a specific type of positive semi-definite functions called Poisson-type functions. Thi…
Non-planar sensing skins for structural health monitoring based on electrical resistance tomography
Jyrki Jauhiainen, Mohammad Pour-Ghaz, Tuomo Valkonen +1
Electrical resistance tomography (ERT) -based distributed surface sensing systems, or sensing skins, offer alternative sensing techniques for structural health monitoring, providin…
Quantitative stability of Gel'fand's inverse boundary problem
Dmitri Burago, Sergei Ivanov, Matti Lassas +1
In Gel'fand's inverse problem, one aims to determine the topology, differential structure and Riemannian metric of a compact manifold with boundary from the knowledge of the bo…
Non associative magnetic translations from parallel transport in projective Hilbert bundles
Jouko Mickelsson, Michael Murray
The non-associativity of translations in a quantum system with magnetic field background has received renewed interest in association with topologically trivial gerbes over $\mathb…
An Inverse Problem for the Relativistic Boltzmann Equation
Tracey Balehowsky, Antti Kujanpää, Matti Lassas +1
We consider an inverse problem for the Boltzmann equation on a globally hyperbolic Lorentzian spacetime with an unknown metric . We consider measurements done in a neigh…
Inner Models from Extended Logics: Part 2
Juliette Kennedy, Menachem Magidor, Jouko Väänänen
We introduce a new inner model arising from stationary logic. We show that assuming a proper class of Woodin cardinals, or alternatively , the regular uncountable…