Results 221 to 230 of about 102,322 (264)
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Efficient Computation of Singular Points
IMA Journal of Numerical Analysis, 1989The author tries to reduce the computational work which is necessary for the iterative construction of singular solutions of systems of nonlinear equations. He proposes variants of a Gauss-Newton-type procedure which is based on a representation of a Moore-Penrose pseudoinverse of a matrix of moderate size.
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Newton’s Method at Singular Points. II
SIAM Journal on Numerical Analysis, 1980A theorem due to Reddien giving sufficient conditions for convergence of Newton iterates for singular problems is extended.
Decker, D. W., Kelley, C. T.
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Point Counting on Singular Hypersurfaces
2008Let q = p r be a prime power. Let Open image in new window be a homogenous polynomial of degree d. Let Open image in new window be the hypersurface defined by Open image in new window . A natural question to ask is how to determine Open image in new window .
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On the Singular Points in the Problem of Inversion
The Annals of Mathematics, 1932Nach der Uniformierungstheorie ist es möglich, eine beliebig gegebene Riemannsche Fläche \(G(x, y) = 0\) vom Geschlecht \(p\) in der Form \(x =\varphi(t)\), \(y = \psi(t)\) zu uniformisieren, wo \(\varphi(t)\), \(\psi(t)\) automorphe Funktionen einer Hauptkreisgruppe \(\Gamma\) bezeichnen. Dadurch erhält man für die \(p\) Normalintegrale \(u_\alpha\) \(
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Singular Points and Singular Values of Mappings of Hilbert Manifolds
Journal of Mathematical Sciences, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jacquet, S., Sarychev, A.
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Summability Tests for Singular Points
Canadian Mathematical Bulletin, 1972King [5] devised two tests for determining when z = 1 is a singular point of the function f(z) defined by1having radius of convergence equal to one. The point z = 1 and radius of convergence one may be chosen without loss of generality.
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Nonlinear Analysis: Real World Applications, 2011
The authors give two recursive formulas to obtain the singular quantities to know when a singular point of a complex analytic system with linear part \(z'=z\), \(w'=-w\) is integrable. One is obtained searching for obstructions to have a formal first integral and the other one is obtained searching for conditions to have an integrating factor that does
Zhang, Qi, Liu, Yirong, Chen, Haibo
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The authors give two recursive formulas to obtain the singular quantities to know when a singular point of a complex analytic system with linear part \(z'=z\), \(w'=-w\) is integrable. One is obtained searching for obstructions to have a formal first integral and the other one is obtained searching for conditions to have an integrating factor that does
Zhang, Qi, Liu, Yirong, Chen, Haibo
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Regular singular points as isomonodromic confluences of Fuchsian singular points
Russian Mathematical Surveys, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Singular Point, Organizing Center and Acupuncture Point
The American Journal of Chinese Medicine, 1989A hypothesis is proposed on the nature of acupuncture point and organizing center, the role of meridian system in growth regulation, and the mechanism of acupuncture. Both organizing centers and acupuncture points have low electric resistance.
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2021
Let \(V\subseteq \mathbb {A}^n\) be an affine variety, with \(\mathcal {I}_a(V)=(f_1,\ldots , f_m)\) and let \(P=(p_1,\ldots , p_n)\) be a point of V. Let r be a line passing through P, so that r has parametric equations of the form $$ x_i=p_i+\lambda _it, \quad \text {with}\quad t\in \mathbb {K}\quad \text {for}\quad i=1,\ldots , n,\quad \text ...
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Let \(V\subseteq \mathbb {A}^n\) be an affine variety, with \(\mathcal {I}_a(V)=(f_1,\ldots , f_m)\) and let \(P=(p_1,\ldots , p_n)\) be a point of V. Let r be a line passing through P, so that r has parametric equations of the form $$ x_i=p_i+\lambda _it, \quad \text {with}\quad t\in \mathbb {K}\quad \text {for}\quad i=1,\ldots , n,\quad \text ...
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