Rafail Abramov
Department of Mathematics, Statistics and Computer Science
University of Illinois at Chicago
851 S. Morgan St.
Chicago, IL 60607
E-mail: abramov@math.uic.edu
Phone: (312) 413 7945
Teaching
MATH 590 — Ordinary Differential Equations
Publications
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R. Abramov, A simple linear response closure approximation for slow
dynamics of a multiscale system with linear coupling,
submitted to Multiscale Modeling and Simulation on August 16, 2011.
[PDF] (preprint) [arXiv.org]
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R. Abramov, Suppression of chaos at slow variables by rapidly
mixing fast dynamics through linear energy-preserving coupling,
submitted to Communications in Mathematical Sciences on May 16, 2011,
accepted on August 12, 2011.
[PDF] (preprint) [arXiv.org]
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R. Abramov & A. Majda, Low Frequency Climate Response
of Quasigeostrophic Wind-Driven Ocean Circulation,
submitted to Journal of Physical Oceanography on March 10,
2011, accepted on September 2, 2011.
[PDF] (preprint)
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R. Abramov, Improved linear response for stochastically
driven systems, submitted to Frontiers of Mathematics in
China on February 1, 2011.
[PDF] [arXiv.org] (preprint
available since January 14, 2010)
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R. Abramov, Approximate linear response for slow variables
of dynamics with explicit time scale separation, Journal
of Computational Physics, 2010, vol. 229, no. 20,
7739—7746.
[DOI
link]
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A. Majda, R. Abramov & B. Gershgorin, High skill in
low frequency climate response through fluctuation dissipation
theorems despite structural instability, Proceedings of
the National Academy of Sciences, 2010, vol. 107, no. 2, 581—586.
[PDF]
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R. Abramov, The multidimensional maximum entropy moment
problem: A review on numerical methods, Communications in
Mathematical Sciences, 2010, vol. 8, no. 2,
377—392.
[PDF]
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R. Abramov, Short-time linear response with reduced-rank
tangent map, Chinese Annals of Mathematics, 2009,
vol. 30B, no. 5, 447—462.
[PDF]
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R. Abramov, The multidimensional moment-constrained
maximum entropy problem: A BFGS algorithm with constraint
scaling, Journal of Computational Physics, 2009,
vol. 228, 96—108.
[DOI
link]
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R. Abramov & A. Majda, A new algorithm for low
frequency climate response, Journal of the
Atmospheric Sciences, 2009, vol. 66, 286—309.
[DOI link]
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R. Abramov & A. Majda, New approximations and tests of
linear fluctuation-response for chaotic nonlinear
forced-dissipative dynamical systems, Journal of
Nonlinear Science, 2008, vol. 18, 303—341.
[PDF]
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R. Abramov & A. Majda, Blended response algorithms for
linear fluctuation-dissipation for complex nonlinear dynamical
systems, Nonlinearity, 2007, vol. 20, 2793—2821.
[PDF]
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R. Abramov, An improved algorithm for the multidimensional
moment-constrained maximum entropy problem, Journal of
Computational Physics, 2007, vol. 226, 621—644.
[DOI
link]
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R. Abramov, A practical computational framework for the
multidimensional moment-constrained maximum entropy
principle, Journal of Computational Physics, 2006,
vol. 211, 198—209.
[DOI
link]
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A. Majda, R. Abramov & M. Grote, Information theory
and stochastics for multiscale nonlinear systems, vol. 25
of CRM Monograph Series, Centre de Recherches
Mathématiques, Université de
Montréal. Published by American Mathematical Society,
2005. ISBN 0-8218-3843-1. 141 pp.
[Amazon]
[Barnes
& Noble]
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K. Haven, A. Majda & R. Abramov, Quantifying
predictability through information theory: Small sample
estimation in a non-Gaussian framework, Journal of
Computational Physics, 2005, vol. 206, 334—362.
[DOI
link]
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R. Abramov, A. Majda & R. Kleeman, Information Theory
and Predictability for Low Frequency Variability, Journal
of Atmospheric Sciences, 2005, vol. 62, no. 1,
65—87.
[PDF]
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R. Abramov & A. Majda, Quantifying uncertainty for
non-Gaussian ensembles in complex systems, SIAM Journal
on Scientific Computing, 2003, vol. 26, no. 2,
411—447.
[PDF]
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R. Abramov & A. Majda, Discrete approximations with
additional conserved quantities: Deterministic and statistical
behavior, Methods and Applications of Analysis, 2003,
vol. 10, no. 2, 151—190.
[PDF]
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R. Abramov & A. Majda, Statistically relevant
conserved quantities for truncated quasi-geostrophic
flow, Proceedings of the National Academy of Sciences,
2003, vol. 100, no. 7, 3841—3846.
[PDF]
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R. Abramov, G. Kovačič & A. Majda, Hamiltonian
structure and statistically relevant conserved quantities for
the truncated Burgers-Hopf equation, Communications in
Pure and Applied Mathematics, 2003, vol. 56,
1—46.
[PDF]
Ph.D. Rensselaer Polytechnic
Institute, Department of
Mathematics, 2002.
Thesis title: Statistically
relevant and irrelevant conserved quantities for the
equilibrium statistical description of the truncated
Burgers-Hopf equation and the equations for barotropic
flow.
[PDF]
Software
The multidimensional moment-constrained maximum entropy algorithm
The library for the PC and some other platforms is there with few examples in C, C++ and
FORTRAN (see file maxent_dist.tar.gz). A short manual is included.