Results 61 to 70 of about 290 (118)
Доклады Белорусского государственного университета информатики и радиоэлектроникиIn the present paper there are considered metric Riemannian spaces Vn4a, in the metrics of which four algebraic structures work at once: real numbers Dm1 and complex numbers Cm2, quaternions Hm3 and octions Om4.
Z. N. Chetyrkina
doaj
A homogeneous Gibbons–Hawking ansatz and Blaschke products [PDF]
, 2010 A homogeneous Gibbons–Hawking ansatz is described, leading to 4-dimensional hyperkähler metrics with homotheties. In combination with Blaschke products on the unit disc in the complex plane, this ansatz allows one to construct infinite-dimensional ...
Jesús Gonzalo Pérez +3 more
core +1 more source
A Bound for the Torsion on Subvarieties of Abelian Varieties
International audienceWe give a uniform bound on the degree of the maximal torsion cosets for subvarieties of an abelian variety. The proof combines algebraic interpolation and a theorem of Serre on homotheties in the Galois representation associated to ...
Galateau, Aurélien, Martínez, César
core +2 more sources
A new characterization of the Wulff Shape
We prove a new charcaterization of the Wulff shape in termes of higher order anisotropic mean curvatures. Namely, if a closed, connnected and oriented hypersurface of the Euclidean space has a constant higher order anisotropic mean curvature H F r and ...
Roth, Julien
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Approximating Convex Shapes With Respect to Symmetric Difference Under Homotheties.
, 2016 The symmetric difference is a robust operator for measuring the error of approximating one shape by another. Given two convex shapes P and C, we study the problem of minimizing the volume of their symmetric difference under all possible scalings and translations of C. We prove that the problem can be solved by convex programming.
Juyoung Yon +4 more
openaire +4 more sources
Design and implementation of a task sequence for teaching homothety
Eurasia Journal of Mathematics, Science and Technology EducationThe teaching of geometry in Chile faces several challenges, as evidenced by the low performance of students in international assessments. In particular, the concept of homothety is impacted by teaching methodologies that emphasize rote memorization and procedural repetition rather than conceptual understanding.
Yenifer Aguilera Moraga +2 more
openaire +1 more source
Curvature-driven morphing of non-Euclidean shells. [PDF]
Proc Math Phys Eng Sci, 2017 Pezzulla M, Stoop N, Jiang X, Holmes DP.
europepmc +1 more source
A New Class of Almost Ricci Solitons and Their Physical Interpretation. [PDF]
Int Sch Res Notices, 2016 Duggal KL.
europepmc +1 more source
Joint Center Estimation Using Single-Frame Optimization: Part 1: Numerical Simulation. [PDF]
Sensors (Basel), 2018 Frick E, Rahmatalla S.
europepmc +1 more source
Half conformally flat gradient Ricci almost solitons. [PDF]
Proc Math Phys Eng Sci, 2016 Brozos-Vázquez M +2 more
europepmc +1 more source