Results 11 to 20 of about 7,423,126 (192)

Constructing Involutive Tableaux with Guillemin Normal Form [PDF]

open access: yes, 2015
Involutivity is the algebraic property that guarantees solutions to an analytic and torsion-free exterior differential system or partial differential equation via the Cartan-K\"ahler theorem. Guillemin normal form establishes that the prolonged symbol of
Smith, Abraham D.
core   +2 more sources

Handling equivalence classes of Optimality-Theoretic tableaux

open access: yesJournal of Language Modelling, 2015
Many Optimality-Theoretic tableaux contain exactly the same information, and equivalence-preserving operations on them have been an object of study for some two decades.
Igor Yanovich
doaj   +1 more source

Global stability and bifurcation analysis of a delayed predator-prey system with prey immigration

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
A delayed predator-prey system with a constant rate immigration is considered. Local and global stability of the equilibria are studied, a fixed point bifurcation appears near the boundary equilibrium and Hopf bifurcation occurs near the positive ...
Gang Zhu, Junjie Wei
doaj   +1 more source

Stability and Hopf-bifurcation analysis of an unidirectionally coupled system

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
In this paper, the stability and existence of periodic solutions for an unidirectionally coupled nonlinear system with delays are investigated by combining the linear stability theory and the embedding technique of asymptotically autonomous semiflows ...
Gang Zhu, Junjie Wei
doaj   +1 more source

Gröbner–Shirshov Bases Theory for Trialgebras

open access: yesMathematics, 2021
We establish a method of Gröbner–Shirshov bases for trialgebras and show that there is a unique reduced Gröbner–Shirshov basis for every ideal of a free trialgebra.
Juwei Huang, Yuqun Chen
doaj   +1 more source

From left-regular to Greibach normal form grammars [PDF]

open access: yes, 1979
Each context-free grammar can be transformed to a context-free grammar in Greibach normal form, that is, a context-free grammar where each right-hand side of a prorfuction begins with a terminal symbol and the remainder of the right-hand side consists of
Nijholt, A.
core   +3 more sources

Gevrey-smoothness of lower dimensional hyperbolic invariant tori for nearly integrable symplectic mappings

open access: yesJournal of Inequalities and Applications, 2017
This paper provides a normal form for a class of lower dimensional hyperbolic invariant tori of nearly integrable symplectic mappings with generating functions.
Shunjun Jiang
doaj   +1 more source

Infinite Turing Bifurcations in Chains of Van der Pol Systems

open access: yesMathematics, 2022
A chain of coupled systems of Van der Pol equations is considered. We study the local dynamics of this chain in the vicinity of the zero equilibrium state.
Sergey Kashchenko
doaj   +1 more source

Periodic and torus motions of a two-degree-of-freedom dry friction vibration system

open access: yesFrontiers in Physics, 2023
Vibration induced by dry friction is ubiquitous in various engineering fields. To explore the vibration characteristics for further studies and/or controls, it is of great theoretical and practical significances to investigate the non-linear dynamic ...
Yong Guo
doaj   +1 more source

Resonant normal form and asymptotic normal form behavior in magnetic bottle Hamiltonians

open access: yes, 2015
We consider normal forms in `magnetic bottle' type Hamiltonians of the form $H=\frac{1}{2}(\rho^2_\rho+\omega^2_1\rho^2) +\frac{1}{2}p^2_z+hot$ (second frequency $\omega_2$ equal to zero in the lowest order).
Contopoulos, G.   +2 more
core   +1 more source

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