Transformation of Bianchi for Minding Top
Дифференциальная геометрия многообразий фигур, 2021 The work is devoted to the study of the Bianchi transform for surfaces of revolution of constant negative Gaussian curvature. The surfaces of rotation of constant negative Gaussian curvature are the Minding top, the Minding coil, the pseudosphere ...
M.A. Cheshkova
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Computational analysis of hygromorphic self-shaping wood gridshell structures [PDF]
Royal Society Open Science, 2020 Bi-layered composites capable of self-shaping are of increasing relevance to science and engineering. They can be made out of anisotropic materials that are responsive to changes in a state variable, e.g.
Philippe Grönquist +5 more
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NORMALIZATION OF CLASSICAL HAMILTONIAN SYSTEMS WITH TWO DEGREES OF FREEDOM
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2020 The family of the Hamiltonian systems with two degrees of freedom was investigated. The calculations of the Poincaré sections show that with arbitrary values of the parameters of the Hamilton function, the system is non-integrable and dynamic chaos is ...
I.N. Belyaeva +4 more
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NeurCADRecon: Neural Representation for Reconstructing CAD Surfaces by Enforcing Zero Gaussian Curvature [PDF]
ACM Transactions on GraphicsDespite recent advances in reconstructing an organic model with the neural signed distance function (SDF), the high-fidelity reconstruction of a CAD model directly from low-quality unoriented point clouds remains a significant challenge.
Qiujie Dong +7 more
semanticscholar +1 more source
Nonlinear statistics of primordial black holes from Gaussian curvature perturbations [PDF]
Physical Review D, 2019 We develop the non-linear statistics of primordial black holes generated by a gaussian spectrum of primordial curvature perturbations. This is done by employing the compaction function as the main statistical variable under the constraints that: a) the ...
C. Germani, R. Sheth
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Distinct cytoskeletal proteins define zones of enhanced cell wall synthesis in Helicobacter pylori
eLife, 2020 Helical cell shape is necessary for efficient stomach colonization by Helicobacter pylori, but the molecular mechanisms for generating helical shape remain unclear. The helical centerline pitch and radius of wild-type H.
Jennifer A Taylor +13 more
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Primordial black hole abundance from random Gaussian curvature perturbations and a local density threshold [PDF]
Progress of Theoretical and Experimental Physics, 2018 The production rate of primordial black holes is often calculated by considering a nearly Gaussian distribution of cosmological perturbations, and assuming that black holes will form in regions where the amplitude of such perturbations exceeds a certain ...
Chul-Moon Yoo +3 more
semanticscholar +1 more source
The longitudinal KAM-cocycle of a magnetic flow [PDF]
, 2004 Let $M$ be a closed oriented surface of negative Gaussian curvature and let $\Omega$ be a non-exact 2-form. Let $\lambda$ be a small positive real number.
Paternain, Gabriel P.
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Examples of surfaces of constant mean curvature
Дифференциальная геометрия многообразий фигур, 2019 A surface in E3 is called parallel to the surface M if it consists of the ends of constant length segments, laid on the normals to the surfaces at points of this surface. The tangent planes at the corresponding points will be parallel.
M. A. Cheshkova
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Geometrical estimators as a test of Gaussianity in the CMB [PDF]
, 2000 We investigate the power of geometrical estimators on detecting non-Gaussianity in the cosmic microwave background. In particular the number, eccentricity and Gaussian curvature of excursion sets above (and below) a threshold are studied.
Barreiro, R. B. +2 more
core +3 more sources