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  • 1
    Electronic Resource
    Electronic Resource
    Finite-dimensional Lorentz covariant bifurcations (1987)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 28 (1987), S. 1170-1174 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: In this paper finite-dimensional Lorentz covariant bifurcation equations are constructed and their properties, solutions, and gradient structures are examined. The possible applications of these ideas and techniques to elementary particle physics are considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527564
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Representations and invariant equations of E(3) (1987)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 28 (1987), S. 2807-2811 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Using methods analogous to those introduced by Gel'fand et al. [Representations of the rotation and Lorentz Groups and Their Applications (Pergamon, New York, 1963)] for the Lorentz group the matrix elements for the representations of the Lie algebra of the Euclidean group in three dimensions E(3) are explicitly derived. These results are then used to construct invariant equations with respect to this group and to show, in particular, that the nonrelativistic analog to the Dirac equation is not unique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527730
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  • 3
    Electronic Resource
    Electronic Resource
    Factorization of systems of differential equations (1986)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 27 (1986), S. 76-81 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: It is shown that the classical Infeld–Hull factorization method can be extended to coupled systems of second-order equations. A complete solution of the factorization equations in two dimensions is given and a partial enumeration of factorizable systems is made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527356
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  • 4
    Electronic Resource
    Electronic Resource
    Optimal large eddy simulation in one dimension (1990)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 2 (1990), S. 1046-1048 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: How the optimal choice of the filter function in large eddy simulations is related to the spectrum of the turbulent flow is shown. A new formula for the subgrid residuals, which ensures that the exact and filtered flow have the same energy decay profile, is also derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.857644
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  • 5
    Electronic Resource
    Electronic Resource
    Gauge invariance and the generalized Bondi-Metzner algebra (1971)
    Springer
    Communications in mathematical physics 21 (1971), S. 237-243 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We examine the algebraic meaning of the Electromagnetic gauge invariance and show that it leads to the new concepts of gauged operators, gauged representations and hence to infinite dimensional extensions of Lie algebras. In particular we prove that the generalized Bondi-Metzner algebra can be interpreted as a gauged Lorentz algebra related to the Electromagnetic gauge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01647121
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  • 6
    Electronic Resource
    Electronic Resource
    Finite dimensional representations of theSU(2)-current Lie algebra (1973)
    Springer
    Communications in mathematical physics 33 (1973), S. 207-214 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We give a complete classification of the finite dimensional solutions for the Lie functional equations ofSU(2).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01667917
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  • 7
    Electronic Resource
    Electronic Resource
    Three-dimensional vortex method for parachutes (1993)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 16 (1993), S. 879-889 
    Details
    ISSN: 0271-2091
    Keywords: Parachutes ; Vortex methods ; CFD ; Spectral analysis ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: We describe the implementation of a new 3D vortex algorithm for the computation of the drag and flow field around parachutes. Among its novel features, the algorithm couples large eddy simulation methodology with the vortex method, away from the wall region. Furthermore, boundary conditions for a wall (no-slip) and compliant boundaries were implemented. The results of several simulations using this algorithm are analysed and discussed. The spectral contents of the vortex method are also considered.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/fld.1650161003
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  • 8
    Book
    Book
    Second course in ordinary differential equations for scientists and engineers (1988)
    Berlin u.a. :Springer,
    Details
    Title: Second course in ordinary differential equations for scientists and engineers
    Author: Humi, Mayer
    Contributer: Miller, William
    Publisher: Berlin u.a. :Springer,
    Year of publication: 1988
    Pages: 441 S.
    Type of Medium: Book
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    Zuse Institute Berlin get availability status
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