Results 111 to 120 of about 1,325 (149)
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Acta Mathematica Hungarica, 1989
Extract from the paper: ``In 1938 Sz. Nagy characterized \(L^ 2\)-spaces of commutative \(W^*\)-algebras in the following way: A Hilbert space H, which is ordered by a selfdual cone \(H^+\) having the Riesz interpolation property, is isomorphic to \(L^ 2(X,\mu)\) for some measure space (X,\(\mu)\).
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Extract from the paper: ``In 1938 Sz. Nagy characterized \(L^ 2\)-spaces of commutative \(W^*\)-algebras in the following way: A Hilbert space H, which is ordered by a selfdual cone \(H^+\) having the Riesz interpolation property, is isomorphic to \(L^ 2(X,\mu)\) for some measure space (X,\(\mu)\).
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Conservation laws of semidiscrete Hamiltonian equations
Journal of Mathematical Physics, 2001Many evolution partial differential equations (PDEs) can be cast into Hamiltonian form. Conservation laws of these equations are related to one-parameter Hamiltonian symmetries admitted by the PDEs [P. J. Olver, Applications of Lie Groups to Differential Equations (Springer, New York, 1986)].
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Semidiscrete Geometric Flows of Polygons
The American Mathematical Monthly, 2007(2007). Semidiscrete Geometric Flows of Polygons. The American Mathematical Monthly: Vol. 114, No. 4, pp. 316-328.
Bennett Chow, David Glickenstein
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A fifth order semidiscrete mKdV equation
Science China Mathematics, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhou, Tong, Zhu, ZuoNong, He, Peng
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Adaptive two‐step methods for semidiscretized wave equations
International Journal for Numerical Methods in Engineering, 1995AbstractAdaptive two‐step direct integration methods are constructed for the integration of second‐order semidiscrete evolution equations possessing oscillatory solutions. The methods are based on a class of adaptive multistep methods for a semilinear test model whose frequency is known.
Franco, J. M., Petriz, F.
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Semidiscrete pesticide transport modeling and application
Journal of Hydrology, 2004A time-continuous and space-discrete method is proposed for three-phase (dissolved, adsorbed, and vapor phases) pesticide transport modeling in the vadose zone and a generalized semidiscrete solution is derived under conditions of heterogeneous media, unsteady flow fields, and space-time-dependent physical and biochemical processes concerning pesticide
Xuefeng Chu, Miguel A. Mariño
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Spatial Stabilization of Semidiscrete Elastodynamics
2008Solutions of direct time integration schemes that converge in time to conventional semidiscrete formulations may be polluted at small time steps by noncausal oscillations. These pathologies are the deleterious effects of higher modes of spatially discrete formulations, which are approximated poorly.
Eran Grosu, Isaac Harari
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A note on semidiscretization methods
Mathematics and Computers in Simulation, 1978Abstract Discretization of the time variable by A-stable linear multistep methods in nonlinear evolution equations is considered. Stability and convergence results are presented, which can be applied to multistep-Galerkin procedures for nonlinear initial boundary value problems.
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Darboux Transformation for a Semidiscrete Short-Pulse Equation
Theoretical and Mathematical Physics, 2018zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wajahat, H., Riaz, A., Hassan, M.
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Convergence Estimates for Semidiscrete Parabolic Equation Approximations
SIAM Journal on Numerical Analysis, 1982Semidiscrete methods for approximating the solutions of initial boundary value problems for parabolic equations are studied. The construction of these semidiscrete methods is based upon the availability of several different Galerkin type approximation methods for the associated elliptic steadystate problem.
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