Concept
Quadrilatère orthodiagonal
Publications associées (18)
A Note on Lenses in Arrangements of Pairwise Intersecting Circles in the Plane
Let F be a family of n pairwise intersecting circles in the plane. We show that the number of lenses, that is convex digons, in the arrangement induced by F is at most 2n - 2. This bound is tight. Furthermore, if no two circles in F touch, then the geometr ...
Electronic Journal Of Combinatorics2024Atomic-scale insights into the origin of rectangular lattice in nanographene probed by scanning tunneling microscopy
We conducted atomic-scale scanning tunneling microscopy of a graphene nanosheet on graphite. In addition to a rhombus lattice representing the (root 3x root 3)R30 degrees superstructure, we resolved another quadrangle lattice similar to a rectangle in the ...
AMER PHYSICAL SOC2021Attosecond spectroscopy reveals alignment dependent core-hole dynamics in the ICl molecule
The removal of electrons located in the core shells of molecules creates transient states that live between a few femtoseconds to attoseconds. Owing to these short lifetimes, time-resolved studies of these states are challenging and complex molecular dynam ...
2020V-band Doppler backscattering diagnostic in the TCV tokamak
Stefano Coda, Laurie Porte, Matthieu Toussaint, Pierre Lavanchy, Pedro Andres Molina Cabrera, Nicola Offeddu
A variable configuration V-band heterodyne Doppler back-scattering diagnostic has been recently made operational in the tokamak a configuration variable. This article describes the hardware setup options, flexible quasi-optical launcher antenna, data-analy ...
AMER INST PHYSICS2018