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Title: Některé vlastnosti nelineárních obvodu a fyzikální význam jakobiánu (Czech)
Title: Some properties of nonlinear circuits and a physical interpretation of the Jacobian (English)
Author: Jiřina, Marcel
Language: Czech
Journal: Aplikace matematiky
ISSN: 0373-6725
Volume: 18
Issue: 2
Year: 1973
Pages: 77-82
Summary lang: English
Summary lang: Czech
Category: math
Summary: A practical problem leads to the investigation of a system of equations in the form $f(x,y,y',z)=0$. The well-known theorem on the solvability of the system of equations in the form $f(x,y,y',z)=0$ applies also to the above system. The condition that the Jacobian $\bold J=\partial t/\partial(y',z)$ is nonzero is, under the corresponding assumptions, sufficient for the existence of a solution $(y(x), y(x))$ of the system. Further the necessity of this condition is proved if the functions $z(x)$ and $y(x)$ are required to be respectively once and twice continuously differentiable. The presented theorem may be applied in mechanics as well as in the theory of electric circuits with concentrated parameters. ()
MSC: 34A12
MSC: 34C25
MSC: 94A20
MSC: 94C10
idZBL: Zbl 0255.34004
idMR: MR0316647
DOI: 10.21136/AM.1973.103453
Date available: 2008-05-20T17:55:25Z
Last updated: 2020-07-28
Stable URL:
Reference: [1] Stern T. E.: Computer-aided analysis of nonlinear networks described by constrained differential equations.Proc. of International Symp. on Network Theory, Belgrade 1968, s. 179-190.
Reference: [2] Ince E. L.: Ordinary Differential Equations.1927. Zbl 0612.34002
Reference: [3] Jiřina M.: Solvability of the equations of the networks with lumped general variable parameters.Information processing machines Sborník VÚMS, č. 20, 1973.
Reference: [4] Jiřina M.: Řešitelnost rovnic nelineárních obvodů sestavených metodou uzlových napětí.Elektrotechnický časopis č. 1, 1972. MR 0388614


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