541 citations
- Helsinki Institute of PhysicsFI3 papers
- Technical University of DenmarkDK3 papers
- Centre National de la Recherche ScientifiqueFR2 papers
- Romanian AcademyRO2 papers
- Tokyo Institute of TechnologyJP2 papers
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- Center for Pastor TheologiansUS1 paper
- Centre de Physique ThéoriqueFR1 paper
- Centre Hospitalier de Bretagne SudFR1 paper
- Dana (United States)US1 paper
- École Polytechnique Fédérale de LausanneCH1 paper
- Harvard UniversityUS1 paper
8 papers · 1 filter
Bounding the number of rational places using Weierstrass semigroups
Olav Geil, Ryutaroh Matsumoto
Let Lambda be a numerical semigroup. Assume there exists an algebraic function field over GF(q) in one variable which possesses a rational place that has Lambda as its Weierstrass…
The effect of time-dependent coupling on non-equilibrium steady states
Horia D. Cornean, Hagen Neidhardt, Valentin A. Zagrebnov
Consider (for simplicity) two one-dimensional semi-infinite leads coupled to a quantum well via time dependent point interactions. In the remote past the system is decoupled, and e…
Optimally localized Wannier functions for quasi one-dimensional nonperiodic insulators
H. D. Cornean, A. Nenciu, G. Nenciu
It is proved that for general, not necessarily periodic quasi one dimensional systems, the band position operator corresponding to an isolated part of the energy spectrum has discr…
Multiple-Description Coding by Dithered Delta-Sigma Quantization
Jan Ostergaard, Ram Zamir
We address the connection between the multiple-description (MD) problem and Delta-Sigma quantization. The inherent redundancy due to oversampling in Delta-Sigma quantization, and t…
Physical Network Coding in Two-Way Wireless Relay Channels
Petar Popovski, Hiroyuki Yomo
It has recently been recognized that the wireless networks represent a fertile ground for devising communication modes based on network coding. A particularly suitable application…
Reparametrizations of Continuous Paths
Martin Raussen, Ulrich Fahrenberg
A reparametrization (of a continuous path) is given by a surjective weakly increasing self-map of the unit interval. We show that the monoid of reparametrizations (with respect to…