Results 41 to 50 of about 69,132 (324)
Research about the number of D-points of -tiling in given ellipse
Journal of Hebei University of Science and Technology, 2017 An Archimedean tiling is a tiling of the plane by one type of regular polygon or several types of regular polygons, and every vertex of the tiling has the same vertex characteristics.
Xianglin WEI, Weiqi WANG
doaj +1 more source
Linear best method for recovering the second derivatives of Hardy class functions [PDF]
E3S Web of Conferences, 2020 The linear best method for approximating the second derivatives of Hardy class functions defined in the unit circle at zero in accordance with the information about their values in a finite number of points forming a regular polygon is found.
Ovchintsev Mikhail
doaj +1 more source
Deployable Arches Based on Regular Polygon Geometry [PDF]
, 2017 This paper discusses a deployable-arch-structure design that is built using articulated bars, commonly called a scissor-system, and is based on the regular polygon geometry.
Peña Villamil, Diana Maritza +1 more
core +1 more source
The billiard in a regular polygon
Geometric and Functional Analysis, 1992 Let \(P_ n\) be a regular \(n\)-gon. From the Ikehara Tauberian theorem one infers that there exists \(c_ n > 0\) such that the growth function of the length spectrum of the billiard in \(P_ n\) satisfies the asymptotic formula: \[ N(P_ n,t)\sim c_ n{t^ 2\over\| P_ n\|}\qquad (t\to \infty)\quad (\| P\|=\text{area}(P_ n)).\tag{1} \] The values \(c_ 3 ...
openaire +2 more sources
Equivariant Semidefinite Lifts of Regular Polygons [PDF]
Mathematics of Operations Research, 2017 Given a polytope P ⊂ ℝn, we say that P has a positive semidefinite lift (psd lift) of size d if one can express P as the projection of an affine slice of the d × d positive semidefinite cone. Such a representation allows us to solve linear optimization problems over P using a semidefinite program of size d and can be useful in practice when d is much ...
Fawzi, Hamza +2 more
openaire +7 more sources
Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders
Population Ecology, EarlyView.We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa +2 more
wiley +1 more source
Polygonal patches of high order continuity [PDF]
, 1987 A polygonal patch is defined to fill an n-sided hole within a rectangular Ck patch framework. First a reparameterization of the surface around the hole is constructed, that is defined outside a regular polygon.
Gregory, JA, Hahn, JM
core
An isoperimetric problem for point interactions
, 2004 We consider Hamiltonian with $N$ point interactions in $\R^d, d=2,3,$ all with the same coupling constant, placed at vertices of an equilateral polygon $\PP_N$. It is shown that the ground state energy is locally maximized by a regular polygon.
Abramowitz M S +9 more
core +1 more source
On Dirichlet eigenvalues of regular polygons
Journal of Mathematical Analysis and Applications15 ...
David Berghaus +3 more
openalex +4 more sources
Molecular Oncology, EarlyView.We identified adaptor protein ShcD as upregulated in triple‐negative breast cancer and found its expression to be correlated with reduced patient survival and increased invasion in cell models. Using a proteomic screen, we identified novel ShcD binding partners involved in EGFR signaling pathways.
Hayley R. Lau +11 more
wiley +1 more source