منابع مشابه
H-Unitary and Lorentz Matrices: A Review
Many properties of H-unitary and Lorentz matrices are derived using elementary methods. Complex matrices which are unitary with respect to the indefinite inner product induced by an invertible Hermitian matrix H, are called H-unitary, and real matrices that are orthogonal with respect to the indefinite inner product induced by an invertible real symmetric matrix, are called Lorentz. The focus i...
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In their recent paper [8], Kulharni and Raymond show that a closed 3-manifold which admits a complete Lorentz metric of constant curvature 1 (henceforth called a complete Lorentz structure) must be Seifert fibered over a hyperbolic base. Furthermore on every such Seifert fibered 3-manifold with nonzero Euler class they construct such a Lorentz metric. Moreover the Lorentz structure they constru...
متن کاملUnimodular Matrices Homomorphic to Lorentz Transformations
deutet und N die oben mit e~lF bezeichnete Größe ist, woraus dann die FREDHOLMsche Lösung der Integralgleichung (15) folgt. Da bei unserem Verfahren derselbe Ausdruck für 5 ( 1 , 1 \ g ) folgt wie bei MATTHEWS und SALAM, so sollte die entsprechende Reihenentwicklung nach Potenzen von g zu der FREDHOLMschen Lösung führen. Dabei müßte eine Identität bestehen zwischen den entsprechenden Koeffizien...
متن کاملTesting Lorentz Symmetry in Space
Atomic clocks, masers, and other precision oscillators are likely to be placed on the International Space Station and other satellites in the future. These instruments will have the potential to measure Lorentz-violation coefficients, and in particular may provide access to parts of the Lorentz-violation coefficient space at levels not accessible with Earth-based experiments. The basic issues a...
متن کاملDistance matrices and isometric embeddings
Matrices with random (or pseudo-random) elements appear naturally in different physical problems and their statistical properties have been thoroughly investigated (see e.g. [1]). A special case of random matrices, called distance matrices, has been recently proposed in [2]. They are defined for any metric space X with a probability measure μ on it as follows. Choose N points ~xj ∈ X randomly d...
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ژورنال
عنوان ژورنال: European Journal of Combinatorics
سال: 1994
ISSN: 0195-6698
DOI: 10.1006/eujc.1994.1006