Differential geometry, Palatini gravity and reduction [PDF]
, 2013 The present article deals with a formulation of the so called (vacuum) Palatini gravity as a general variational principle. In order to accomplish this goal, some geometrical tools related to the geometry of the bundle of connections of the frame bundle $
Baez J. +17 more
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A STUDY ON THE VARIATIONS OF INNER ORIENTATION PARAMETERS OF A HYPERSPECTRAL FRAME CAMERA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 New low-cost hyperspectral frame sensors have created a new perspective for remote sensing applications. In this work, we investigate some issues related to the geometric calibration of a hyperspectral frame camera based of FPI (Fabry-Pérot ...
A. M. G. Tommaselli +4 more
doaj +1 more source
CORRECTION OF AIRBORNE PUSHBROOM IMAGES ORIENTATION USING BUNDLE ADJUSTMENT OF FRAME IMAGES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 To compute hyperspectral orthophotos of an area, one may proceed like for standard RGB orthophotos : equip an aircraft or a drone with the appropriate camera, a GPS and an Inertial Measurement Unit (IMU).
K. Barbieux, D. Constantin, B. Merminod
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Symmetry and localization in periodic crystals: triviality of Bloch bundles with a fermionic time-reversal symmetry [PDF]
, 2014 We describe some applications of group- and bundle-theoretic methods in solid state physics, showing how symmetries lead to a proof of the localization of electrons in gapped crystalline solids, as e.g. insulators and semiconductors.
Monaco, Domenico, Panati, Gianluca
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A first-order purely frame-formulation of General Relativity [PDF]
, 2005 In the gauge natural bundle framework a new space is introduced and a first-order purely frame-formulation of General Relativity is obtained.Comment: 9 Pages, Submitted to Classical and Quantum ...
Cianci R +6 more
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USING RELATIVE ORIENTATION CONSTRAINTS TO PRODUCE VIRTUAL IMAGES FROM OBLIQUE FRAMES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 Image acquisition systems based on multi-head arrangement of digital cameras are attractive alternatives enabling larger imaging area when compared to a single frame camera.
A. M. G. Tommaselli +5 more
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Geometry and General Relativity in the Groupoid Model with a Finite Structure Group [PDF]
, 2015 In a series of papers we proposed a model unifying general relativity and quantum mechanics. The idea was to deduce both general relativity and quantum mechanics from a noncommutative algebra ${\cal A}_{\Gamma}$ defined on a transformation groupoid ...
Heller, M. +3 more
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On the scalar components of the canonical form on higher order frame bundles
Дифференциальная геометрия многообразий фигурA detailed obtaining of the expressions for the scalar components of the canonical form on higher order frame bundles over a smooth manifold has been done.
A. V. Kuleshov
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An Einstein-Hilbert Action for Axi-Dilaton Gravity in 4-Dimensions [PDF]
, 1995 We examine the axi-dilatonic sector of low energy string theory and demonstrate how the gravitational interactions involving the axion and dilaton fields may be derived from a geometrical action principle involving the curvature scalar associated with a ...
Anderson J L +16 more
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Geodesic Reduction via Frame Bundle Geometry
Symmetry, Integrability and Geometry: Methods and Applications, 2010 A manifold with an arbitrary affine connection is considered and the geodesic spray associated with the connection is studied in the presence of a Lie group action.
Ajit Bhand
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