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Ordering the heavens
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ISBN: 9789004161863 9004161864 9786611936563 1281936561 9047431073 9789047431077 9781281936561 6611936564 Year: 2007 Volume: 8 4 Publisher: Leiden Boston Brill

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Abstract

The astronomy of the Carolingian era has commonly been represented as concerned exclusively with computus , the science of calendar construction as well as arithmetical calculation in general. This volume shows the error of that portrayal by exploring the study and teaching of four Roman texts on astronomy and cosmology in the Carolingian world and the diagrams connected to those texts. As each of these works came into use over the Carolingian era, its contributions merged into a progressively more ordered picture of the heavens. Both eccentrics and epicycles appeared by the 840s. These techniques were subsequently introduced clearly and qualitatively to complete the Carolingian enterprise. The primary tool for understanding this effort is the analysis of their diagrams. Medieval and Early Modern Science , volume 8

Topics in gravitational dynamics : solar, extra-solar and galactic systems
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Abstract

This set of lectures collects surveys of open problems in celestial dynamics and dynamical astronomy applied to solar, extra-solar and galactic systems. Emphasis is on questions of stability of planetary systems. In particular the discovery and thus the possibility to study many new extra-solar planetary systems have spurred new developments in the field and enabled the testing and enlargement of the domains of validity of theoretical predictions through the Nekhoroshev theorem.

Keywords

Hamiltonian systems. --- Gravitation. --- Astrophysics. --- Systèmes hamiltoniens --- Gravitation --- Astrophysique --- Celestial mechanics --- Extrasolar planets --- Theoretical Astronomy --- Astronomy - General --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Solar system --- Physics. --- Dynamics. --- Ergodic theory. --- Observations, Astronomical. --- Astronomy --- Space sciences. --- Astronomy, Observations and Techniques. --- Dynamical Systems and Ergodic Theory. --- Mathematical Methods in Physics. --- Extraterrestrial Physics, Space Sciences. --- Observations. --- Milky Way --- Differentiable dynamical systems. --- Mathematical physics. --- Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics). --- Astronomical physics --- Cosmic physics --- Physics --- Differential dynamical systems --- Dynamical systems, Differentiable --- Dynamics, Differentiable --- Differential equations --- Global analysis (Mathematics) --- Topological dynamics --- Physical mathematics --- Mathematics --- Astronomy—Observations. --- Science and space --- Space research --- Cosmology --- Science --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Ergodic transformations --- Continuous groups --- Mathematical physics --- Measure theory --- Transformations (Mathematics) --- Dynamical systems --- Kinetics --- Mechanics, Analytic --- Force and energy --- Mechanics --- Statics --- Astronomical observations --- Observations, Astronomical

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