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Riemann Problem for Conservation Laws with an Umbilic Point
2003We study the Riemann problems for 2 × 2 conservation laws with a hyperbolic singularity. The flux are a pair of quadratic functions where the char acteristic speeds are equals and the Jacobian matrix is diagonal at the hyperbolic singularity i.e. umbilic point. Discontinuous solutions will be considered.
Fumioki Asakura, Mitsuru Yamazaki
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On Pointing Accuracy and Pointing Stability of Disturbance-Free Payload Using Umbilical Connection
2018 37th Chinese Control Conference (CCC), 2018Pointing accuracy and pointing stability play an important role in gravitational wave detection spacecraft. This paper presents dynamics model, pointing accuracy and stability analysis of a payload-spacecraft system connected using umbilical and non-contact actuators.
Jiaxing Zhou +5 more
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Wave Motion, 1991
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhu, Guangshan, Ting, T. C. T.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhu, Guangshan, Ting, T. C. T.
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Hyperbolic Conservation Laws with Umbilic Points I
1992Abstract : In this paper a compactness framework for approximate solutions to nonlinear hyperbolic systems with umbilic points is established by combining ideas in modern nonlinear analysis with classical methods, and by a detailed analysis of a highly singular Euler-Poisson-Darboux-type equation.
Pui T. Kan, Gui-Qiang Chen
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The Umbilic Points in Ellipsoidal Orthorhombic Medium
83rd EAGE Annual Conference & Exhibition, 2022S. Xu, A. Stovas, X. Huang
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Umbilical Points and W-Surfaces
American Journal of Mathematics, 1954Hartman, Philip, Wintner, Aurel
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