Quasi-graphs, zero entropy and measures with discrete spectrum
Sign Up to like & getrecommendations! Published in 2022 at "Nonlinearity"
DOI: 10.1088/1361-6544/ac4b3a
Abstract: In this paper, we study dynamics of maps on quasi-graphs and characterise their invariant measures. In particular, we prove that every invariant measure of a quasi-graph map with zero topological entropy has discrete spectrum. Additionally,… read more here.
Keywords: discrete spectrum; entropy; quasi graphs; topological entropy ... See more keywords
Modulation Over Nonlinear Fourier Spectrum: Continuous and Discrete Spectrum
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2794475
Abstract: Nonlinear frequency division multiplexed (NFDM) systems are considered when data are modulated in both parts of the nonlinear Fourier spectrum: Continuous spectrum and discrete spectrum. An efficient algorithm is introduced to generate a time-domain signal… read more here.
Keywords: modulation nonlinear; spectrum; spectrum continuous; fourier spectrum ... See more keywords
Discrete Spectrum of Ultralow-Frequency Oscillations of the Ionosphere
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2021.3092738
Abstract: This work relates to the field of ultralow-frequency (ULF) spectroscopy of near-earth plasma. Our attention is focused on the Alfvén ionospheric resonator, the spectrum of which is a series of discrete lines. The aim of… read more here.
Keywords: discrete spectrum; spectroscopy; spectrum; ultralow frequency ... See more keywords
Discrete Spectrum Reconstruction Using Integral Approximation Algorithm
Sign Up to like & getrecommendations! Published in 2017 at "Applied Spectroscopy"
DOI: 10.1177/0003702817694181
Abstract: An inverse problem in spectroscopy is considered. The objective is to restore the discrete spectrum from observed spectrum data, taking into account the spectrometer’s line spread function. The problem is reduced to solution of a… read more here.
Keywords: approximation algorithm; integral approximation; solution; spectroscopy ... See more keywords