Results 1 to 10 of about 6,024,747 (209)

Entropy-Based Clustering Algorithm for Fingerprint Singular Point Detection [PDF]

open access: yesEntropy, 2019
Fingerprints have long been used in automated fingerprint identification or verification systems. Singular points (SPs), namely the core and delta point, are the basic features widely used for fingerprint registration, orientation field estimation, and ...
Ngoc Tuyen Le   +3 more
doaj   +2 more sources

Singular Points of Curves

open access: yesМоделирование и анализ информационных систем, 2018
In this paper, we consider the key problem of geometric modeling, connected with the construction of the intersection curves of surfaces. Methods for constructing the intersection curves in complex cases are found: by touching and passing through ...
Artem D. Uvarov
doaj   +3 more sources

A General Type of Singular Point. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1924
E. Hille
semanticscholar   +3 more sources

Neural-Singular-Hessian: Implicit Neural Representation of Unoriented Point Clouds by Enforcing Singular Hessian [PDF]

open access: yesACM Transactions on Graphics, 2023
Neural implicit representation is a promising approach for reconstructing surfaces from point clouds. Existing methods combine various regularization terms, such as the Eikonal and Laplacian energy terms, to enforce the learned neural function to possess
Zixiong Wang   +8 more
semanticscholar   +1 more source

Newton-Anderson at Singular Points

open access: yesInternational Journal of Numerical Analysis and Modeling, 2023
In this paper we develop convergence and acceleration theory for Anderson acceleration applied to Newton's method for nonlinear systems in which the Jacobian is singular at a solution. For these problems, the standard Newton algorithm converges linearly in a region about the solution; and, it has been previously observed that Anderson acceleration can ...
Matt Dallas, Sara Pollock
openaire   +3 more sources

Point Singularities in Incompatible Elasticity [PDF]

open access: yesJournal of Elasticity, 2021
The equations of stress equilibrium and strain compatibility/incompatibility are discussed for fields with point singularities in a planar domain. The sufficiency (or insufficiency) of the smooth maps, obtained by restricting the singular fields to the domain away from the singularities, in completely characterizing the equations of equilibrium and ...
Animesh Pandey, Anurag Gupta
openaire   +3 more sources

Parametric Expansions of an Algebraic Variety near Its Singularities

open access: yesAxioms, 2023
Presently, there is a method based on Power Geometry that allows one to find asymptotic forms and asymptotic expansions of solutions to different kinds of non-linear equations near their singularities.
Alexander D. Bruno, Alijon A. Azimov
doaj   +1 more source

Phase portraits of some polynomial differential systems with maximal multiplicity of the line at the infinity

open access: yesActa et Commentationes: Ştiinţe Exacte şi ale Naturii, 2023
The present study delves into the investigation of phase portraits of polynomial differential systems, which are systems of differential equations of the form $\frac{dx}{dt} = P(x,y), \frac{dy}{dt} = Q(x,y)$, where $x$ and $y$ are the dependent ...
Vadim Repeșco
doaj   +1 more source

Study of forced vibrations transition processes of vibration protection devices with rolling-contact bearings

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2020
Many seismic isolation and vibration protection devices use asan essential element the various typ es of rolling-contact b earings. The rolling-contact b earing is used for creation of moving base of b o dy protected against vibration. The most dynamic
K. Bissembayev, K. Sultanova
doaj   +1 more source

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