Results 21 to 30 of about 1,013,760 (323)

Low energy dynamics of a CP^1 lump on the sphere [PDF]

open access: yes, 1995
Low-energy dynamics in the unit-charge sector of the CP^1 model on spherical space (space-time S^2 x R) is treated in the approximation of geodesic motion on the moduli space of static solutions, a six-dimensional manifold with non-trivial topology and ...
Belavin A. A., J. M. Speight
core   +3 more sources

Hilbert Metric in the Unit Ball

open access: yesStudia Scientiarum Mathematicarum Hungarica, 2023
The Hilbert metric between two points 𝑥, 𝑦 in a bounded convex domain 𝐺 is defined as the logarithm of the cross-ratio 𝑥, 𝑦 and the intersection points of the Euclidean line passing through the points 𝑥, 𝑦 and the boundary of the domain. Here, we study this metric in the case of the unit ball 𝔹𝑛.
Oona Rainio, Matti Vuorinen
openaire   +2 more sources

Variations of gwistor space [PDF]

open access: yes, 2012
We study natural variations of the G2 structure {\sigma}_0 \in {\Lambda}^3_+ existing on the unit tangent sphere bundle SM of any oriented Riemannian 4-manifold M.
Albuquerque, Rui
core   +2 more sources

New Standards for Measurement in Meridians & Acupoints by Taking the Size of Normal Male Legs

open access: yesJournal of Pharmacopuncture, 2010
Objective : Standard of measurement in Korean Medicine has been changed in dynasty and location. Thus, cun (寸) and chi (尺) as unit of measurement for meridians and acupoints could be recognized as the length of equally divided portions of a certain long ...
Shin Jong Yu   +6 more
doaj   +1 more source

Dealing with Metric Unit Conversion: An Examination of Prospective Science Teachers’ Knowledge of and Difficulties with Conversion

open access: yesScience Education International, 2018
The aim of this study was to examine prospective science teachers’ knowledge of and difficulties with the metric unit conversion. The participants of the study were 73 prospective science teachers.
Emrah Oguzhan Dincer   +1 more
doaj   +1 more source

Completeness results for metrized rings and lattices [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2019
The Boolean ring $B$ of measurable subsets of the unit interval, modulo sets of measure zero, has proper radical ideals (for example, $\{0\})$ that are closed under the natural metric, but has no prime ideal closed under that metric; hence closed radical
George Bergman
doaj   +1 more source

Critical Metrics and Curvature of Metrics with Unit Volume or Unit Area of the Boundary

open access: yesThe Journal of Geometric Analysis, 2022
32 pages. Comments are welcome! (added references, corrected typos)
Tiarlos Cruz, Almir Silva Santos
openaire   +3 more sources

Kaleidoscopical graphs and semigroups [PDF]

open access: yesМатематичні Студії, 2011
We give a semigroup characterization of kaleidoscopical graphs. A connected graph Г (considered as a metric space with the path metric) is called kaleidoscopical if there is a vertex coloring of Г which is bijective on each unit ball.
K. D. Protasova
doaj  

Natural Paracontact Magnetic Trajectories on Unit Tangent Bundles

open access: yesAxioms, 2020
In this paper, we study natural paracontact magnetic trajectories in the unit tangent bundle, i.e., those that are associated to g-natural paracontact metric structures.
Mohamed Tahar Kadaoui Abbassi   +1 more
doaj   +1 more source

$H$-contact unit tangent sphere bundles of Riemannian manifolds

open access: yes, 2016
A contact metric manifold is said to be $H$-contact, if the characteristic vector field is harmonic. We prove that the unit tangent bundle of a Riemannian manifold $M$ equipped with the standard contact metric structure is $H$-contact if and only if $M ...
Nikolayevsky, Yuri, Park, Jeong Hyeong
core   +1 more source

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