Results 261 to 270 of about 3,658,908 (303)
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Linear approximation of simple objects
Information Processing Letters, 1997zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kasturi R. Varadarajan +1 more
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On Linear Cryptanalysis with Many Linear Approximations
2009In this paper we present a theoretical framework to quantify the information brought by several linear approximations of a block-cipher without putting any restriction on these approximations. We quantify here the entropy of the key given the plaintext-ciphertext pairs statistics which is a much more accurate measure than the ones studied earlier.
Benoît Gérard, Jean-Pierre Tillich
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Gadgets, Approximation, and Linear Programming
SIAM Journal on Computing, 2000Summary: We present a linear programming-based method for finding ''gadgets,'' i.e., combinatorial structures reducing constraints of one optimization problem to constraints of another. A key step in this method is a simple observation which limits the search space to a finite one.
Luca Trevisan 0001 +3 more
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Uniform Approximation of Linear Systems*
Bell System Technical Journal, 1969A method for reducing the complexity of the class of linear, time-varying, dynamic control systems is developed where the approach taken is that of uniform approximation (that is, modeling for a region of initial conditions). The objective of the modeling procedure is to choose a linear time-invariant system of given dimension, that minimizes a “worst ...
Heffes, H., Sarachik, P. E.
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Diophantine Approximations of Linear Forms
Journal of Mathematical Sciences, 2022The present paper deals with Diophantine approximations of linear combinations of real algebraic numbers of an arbitrary degree. The author gives the following brief description of the presented results: ``An infinite sequence of integral approximations of the linear forms is generated using recurrence relation.
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Risky linear approximations [PDF]
, 2014 I construct risk-corrected approximations of the policy functions of DSGEmodels around the stochastic steady state and ergodic mean that are linear in the state variables. The resulting approximations are uniformly more accurate than standard linear approximations and capture the dynamics of asset pricing variables such as the expected risk premium ...
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Approximation properties and linearity of groups
Journal of Mathematical Sciences, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A note on approximate linear programming
Information Processing Letters, 1992zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The Approximation of Linear Functionals
SIAM Journal on Numerical Analysis, 1966Ahlberg, J. H., Nilson, E. N.
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Approximate Reachability for Linear Systems
2003We describe new techniques to construct, and subsequently refine, over-approximations of the reachability sets for linear dynamical systems. Our approach extracts information from real eigenvectors and more generally, from certain vectors in the primary decomposition, to generate suitable invariants of the system and can be used in conjunction with ...
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