Results 31 to 40 of about 1,498,959 (338)
Silhouette and spectral line profiles in the special modification of the Kerr black hole geometry generated by quintessential fields [PDF]
, 2016 We study optical effects in quintessential Kerr black hole spacetimes corresponding to the limiting case of the equation-of-state parameter $\omega_{q}=-1/3$ of the quintessence.
Schee, Jan, Stuchlik, Zdenek
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Kinematic Geometry of a Timelike Line Trajectory in Hyperbolic Locomotions
Axioms, 2023 This study utilizes the axodes invariants to derive novel hyperbolic proofs of the Euler–Savary and Disteli formulae. The inflection circle, which is widely recognized, is situated on the hyperbolic dual unit sphere, in accordance with the principles of ...
Areej A. Almoneef, Rashad A. Abdel-Baky
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Geometry on the lines of spine spaces [PDF]
Aequationes mathematicae, 2017 Spine spaces can be considered as fragments of a projective Grassmann space. We prove that the structure of lines together with binary coplanarity relation, as well as with binary relation of being in one pencil of lines, is a sufficient system of primitive notions for these geometries. It is also shown that, over a spine space, the geometry of pencils
Mariusz Żynel, Krzysztof Petelczyc
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Electric-magnetic Duality in Noncommutative Geometry [PDF]
, 1997 The structure of S-duality in U(1) gauge theory on a 4-manifold M is examined using the formalism of noncommutative geometry. A noncommutative space is constructed from the algebra of Wilson-'t Hooft line operators which encodes both the ordinary ...
Lizzi, Fedele, Szabo, Richard J.
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Blake’s Newton, Line-Drawing, and Geometry
Studies in Romanticism, 2021 “Young, blond, [and] curly-headed,” the nude of Newton “in some respects . . . resembles a Blakean hero” (fig. 1). His musculature tense, he stares intently at the diagram that is inscribed—in this second state of the scene, printed c. 1805—on the pale scroll still part-unfurled at his feet. As W. T. J.
Sarah Haggarty
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Line geometry and 3D graphic statics
Građevinar, 2019 The mathematical basis for the line geometry, with the line as its basic element, is presented in the paper because the forces that act on a body in space - whether we are interested in conditions of movement or immobility (balance) of that body - are ...
Iva Kodrnja +2 more
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EXPERIMENTS WITH UAS IMAGERY FOR AUTOMATIC MODELING OF POWER LINE 3D GEOMETRY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 The ideal mapping technology for transmission line inspection is the airborne LiDAR executed from helicopter platforms. It allows for full 3D geometry extraction in highly automated manner.
G. Jóźków, B. Vander Jagt, C. Toth
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Nut Geometry Inspection Using Improved Hough Line and Circle Methods
Sensors, 2023 Nuts are the cornerstone of human industrial construction, especially A-grade nuts that can only be used in power plants, precision instruments, aircraft, and rockets.
En-Yu Lin +2 more
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Miranda: Revue Pluridisciplinaire du Monde Anglophone, 2012 In the text now known as the Histories of the Dividing line, William Byrd II narrates the survey, in 1728, of the straight line marking the Virginia-North Carolina border.
Julien Nègre
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Scientific Reports, 2021 Assessing the taxonomic importance of the suture line in shelled cephalopods is a key to better understanding the diversity of this group in Earth history.
Amane Tajika +2 more
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