Results 11 to 20 of about 439,416 (273)
Estimation error for blind Gaussian time series prediction [PDF]
, 2011 We tackle the issue of the blind prediction of a Gaussian time series. For this, we construct a projection operator build by plugging an empirical covariance estimation into a Schur complement decomposition of the projector. This operator is then used to
Espinasse, Thibault +2 more
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Neural network regularization in the problem of few-view computed tomography
Компьютерная оптика, 2022 The computed tomography allows to reconstruct the inner morphological structure of an object without physical destructing. The accuracy of digital image reconstruction directly depends on the measurement conditions of tomographic projections, in ...
A.V. Yamaev +4 more
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Gauge Invariances in the Proca model [PDF]
, 1997 We show that the abelian Proca model, which is gauge non-invariant with second class constraints can be converted into gauge theories with first class constraints. The method used, which we call Gauge Unfixing employs a projection operator defined in the
Vytheeswaran, A S
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On the quadratic Fock functor [PDF]
, 2012 We prove that the quadratic second quantization of an operator p on $L^2(\mathbb{R}^d)\cap L^\infty (\mathbb{R}^d)$ is an orthogonal projection on the quadratic Fock space if and only if p =MI, where MI is a multiplication operator by a characteristic ...
Dhahri, Ameur
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Projection solutions of Frobenius-Perron operator equations
International Journal of Mathematics and Mathematical Sciences, 1993 We construct in this paper the first order and second order piecewise polynomial finite approximation schemes for the computation of invariant measures of a class of nonsingular measurable transformations on the unit interval of the real axis.
Jiu Ding, Tien Tien Li
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Entanglement of purification and projection operator in conformal field theories
Physics Letters B, 2019 We investigate entanglement of purification (EoP) in conformal field theory. By using Reeh-Schlieder theorem, we construct a set of the purification states for ρAB, where ρAB is reduced density matrix for subregion AB of a global state ρ.
Wu-Zhong Guo
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PMLSM position control based on continuous projection adaptive sliding mode controller
Systems Science & Control Engineering, 2018 In this paper, the design of projection-based Adaptive Sliding Mode Controller (ASMC) is presented for position control of Permanent Magnet Linear Synchronous Motor (PMLSM) with unknown mover mass.
Amjad Jaleel Humaidi +1 more
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LOGARITHMIC HEAT PROJECTIVE OPERATORS [PDF]
Communications in Algebra, 2005 26 pages ...
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Poincaré Inequalities for Composition Operators with Lφ-Norm
Abstract and Applied Analysis, 2014 We establish the Poincaré-type inequalities for the composition of the homotopy operator, exterior derivative operator, and the projection operator with Lφ-norm applied to the nonhomogeneous A-harmonic equation in Lφ(Ω)-averaging domains.
Ru Fang
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On Construction of Projection Operators [PDF]
The Journal of Physical Chemistry A, 2019 The problem of construction of projection operators on eigen-subspaces of symmetry operators is considered. This problem arises in many approximate methods for solving time-independent and time-dependent quantum problems, and its solution ensures proper physical symmetries in development of approximate methods.
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