Results 131 to 140 of about 1,961,877 (260)

Special Lagrangian fibrations, wall-crossing, and mirror symmetry [PDF]

open access: yesarXiv, 2009
In this survey paper, we briefly review various aspects of the SYZ approach to mirror symmetry for non-Calabi-Yau varieties, focusing in particular on Lagrangian fibrations and wall-crossing phenomena in Floer homology. Various examples are presented, some of them new.
arxiv  

Optimal geometry for a quartz multipurpose SPM sensor

open access: yesBeilstein Journal of Nanotechnology, 2013
We propose a geometry for a piezoelectric SPM sensor that can be used for combined AFM/LFM/STM. The sensor utilises symmetry to provide a lateral mode without the need to excite torsional modes.
Julian Stirling
doaj   +1 more source

Optimization of Conformal Mapping Functions used in Developing Closed-Form Solutions for Underground Structures with Conventional cross Sections [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2015
Elastic solutions applicable to single underground openings usually suffer from geometry related simplification. Most tunnel shapes possess two axes of symmetry while a wide range of geometries used in tunneling practice involve only one symmetry axis. D-
Ali Nazem   +3 more
doaj  

On Symmetries of Finite Geometries

open access: yes
The isospectral set of the Dirac matrix D=d+d* consists of orthogonal Q for which Q* D Q is an equivalent Dirac matrix. It can serve as the symmetry of a finite geometry G. The symmetry is a subset of the orthogonal group or unitary group and isospectral Lax deformations produce commuting flows d/dt D=[B(g(D)),D] on this symmetry space.
openaire   +2 more sources

The three obdurate conjectures of differential geometry [PDF]

open access: yesarXiv
We explore the role of symmetry in three obdurate conjectures of differential geometry: the Carath\'eodory, the Willmore and the Lawson Conjectures.
arxiv  

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