Results 51 to 60 of about 520,948 (231)

Examples of noncommutative manifolds: complex tori and spherical manifolds

open access: yes, 2007
We survey some aspects of the theory of noncommutative manifolds focusing on the noncommutative analogs of two-dimensional tori and low-dimensional spheres. We are particularly interested in those aspects of the theory that link the differential geometry
Plazas, Jorge
core   +2 more sources

Purcell’s Three-Link Swimmer: Assessment of Geometry and Gaits for Optimal Displacement and Efficiency

open access: yesMathematics, 2021
This paper studies the displacement and efficiency of a Purcell’s three-link microswimmer in low Reynolds number regime, capable of moving by the implementation of a motion primitive or gait.
Cristina Nuevo-Gallardo   +3 more
doaj   +1 more source

Parametric shortest-path algorithms via tropical geometry

open access: yes, 2021
We study parameterized versions of classical algorithms for computing shortest-path trees. This is most easily expressed in terms of tropical geometry.
Joswig, Michael, Schröter, Benjamin
core   +1 more source

Transitive Decompositions of Graphs and Their Links with Geometry and Origami [PDF]

open access: yesThe American Mathematical Monthly, 2010
A transitive decomposition of a graph is a partition of the edge or arc set giving a set of subgraphs which are preserved and permuted transitively by a group of automorphisms of the graph. In this paper we give some background to the study of transitive decompositions and highlight a connection with partial linear spaces.
openaire   +3 more sources

Gauge theory and $\mathrm G_2$-geometry on Calabi–Yau links [PDF]

open access: yesRevista Matemática Iberoamericana, 2020
The 7-dimensional link K of a weighted homogeneous hypersurface on the round 9-sphere in \mathbb{C}^5 has a nontrivial null Sasakian structure which is contact Calabi–Yau, in many cases. It admits a canonical co-calibrated
Lázaro O. Rodríguez Díaz   +2 more
openaire   +3 more sources

Wind Direction Retrieval Using Spaceborne GNSS-R in Nonspecular Geometry

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
A wind direction retrieval algorithm using spaceborne global navigation satellite system reflectometry (GNSS-R) in nonspecular geometry is presented. This article first focuses on investigating the influence of wind direction on the scattering strength ...
Guodong Zhang   +3 more
doaj   +1 more source

Reconstructing Quantum Geometry from Quantum Information: Spin Networks as Harmonic Oscillators

open access: yes, 2005
Loop Quantum Gravity defines the quantum states of space geometry as spin networks and describes their evolution in time. We reformulate spin networks in terms of harmonic oscillators and show how the holographic degrees of freedom of the theory are ...
Ashtekar A   +29 more
core   +2 more sources

Shape and fluctuations of frustrated self-assembled nano ribbons

open access: yesNature Communications, 2019
Supramolecular assemblies achieve nontrivial structures but there is no general framework to link their formation to molecular properties. Here the authors propose a model that relates molecular geometry and interactions to nanoribbon formation ...
Mingming Zhang   +3 more
doaj   +1 more source

Noncommutative Schwarzschild geometry and generalized uncertainty principle

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We discuss a possible link between the deformation parameter $$\Theta ^{\mu \nu }$$ Θμν arising in the framework of noncommutative geometry and the parameter $$\beta $$ β of the generalized uncertainty principle (GUP). We compute the shift of the Hawking
T. Kanazawa   +3 more
doaj   +1 more source

Arithmetic of Calabi-Yau Varieties and Rational Conformal Field Theory [PDF]

open access: yes, 2001
It is proposed that certain techniques from arithmetic algebraic geometry provide a framework which is useful to formulate a direct and intrinsic link between the geometry of Calabi-Yau manifolds and the underlying conformal field theory. Specifically it
Candelas   +16 more
core   +2 more sources

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