Search results for "Critical points"

showing 10 items of 44 documents

Multiple solutions of second order Hamiltonian systems

2017

Author(s): Bonanno, G; Livrea, R; Schechter, M | Abstract: The existence and the multiplicity of periodic solutions for a parameter dependent second order Hamiltonian system are established via linking theorems. A monotonicity trick is adopted in order to prove the existence of an open interval of parameters for which the problem under consideration admits at least two non trivial qualified solutions.

Pure mathematicscritical pointsMonotonic functionperiodic solutionsCritical points01 natural sciencesHamiltonian systemCritical pointsecond order Hamiltonian systemsQA1-939Order (group theory)0101 mathematicsMathematicsDiscrete mathematicsSecond order Hamiltonian systems; Periodic solutions; Critical points; Applied MathematicsPeriodic solutionsApplied Mathematics010102 general mathematicsMultiplicity (mathematics)Pure Mathematics010101 applied mathematicsSecond order Hamiltonian systemPeriodic solutionSecond order Hamiltonian systemsParameter dependentOpen intervalMathematics
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Infinitely many weak solutions for a mixed boundary value system with (p_1,…,p_m)-Laplacian

2014

The aim of this paper is to prove the existence of infinitely many weak solu- tions for a mixed boundary value system with (p1, . . . , pm)-Laplacian. The approach is based on variational methods.

Pure mathematicscritical pointsinfinitely many solutionsApplied MathematicsMathematical analysisvariational methodsBoundary valuesCritical points variational methods infinitely many solutions p-Laplacian.$p$-laplacianSettore MAT/05 - Analisi MatematicaQA1-939Laplace operatorMathematicsMathematics
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Periodic solutions for a class of second-order Hamiltonian systems

2005

Multiplicity results for an eigenvalue second-order Hamiltonian system are investigated. Using suitable critical points arguments, the existence of an exactly determined open interval of positive eigenvalues for which the system admits at least three distinct periodic solutions is established. Moreover, when the energy functional related to the Hamiltonian system is not coercive, an existence result of two distinct periodic solutions is given.© 2005 Texas State University - San Marcos.

Second order Hamiltonian systemPeriodic solutioncritical pointslcsh:MathematicsMultiple solutioneigenvalue problemperiodic solutionslcsh:QA1-939Second order Hamiltonian systemsAnalysisCritical pointmultiple solutions.Electronic Journal of Differential Equations
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A sequence of positive solutions for sixth-order ordinary nonlinear differential problems

2021

Infinitely many solutions for a nonlinear sixth-order differential equation are obtained. The variational methods are adopted and an oscillating behaviour on the nonlinear term is required, avoiding any symmetry assumption.

SequenceDifferential equationSixth orderApplied MathematicsCritical pointsInfinitely many solutionsSymmetry (physics)Term (time)Nonlinear systemSixth-order equationsSettore MAT/05 - Analisi MatematicaQA1-939Applied mathematicsCritical points; Infinitely many solutions; Sixth-order equationsDifferential (infinitesimal)MathematicsMathematicsElectronic Journal of Qualitative Theory of Differential Equations
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Ordinary (p_1,...,p_m)-Laplacian system with mixed boundary value

2016

In this paper we prove the existence of multiple weak solutions for an ordinary mixed boundary value system with (p_1,...,p_m)-Laplacian by using recent results of critical points.

Settore MAT/05 - Analisi MatematicaMultiple critical points variational methods p-Laplacian boundary value problem
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Multiple solutions for a mixed boundary value problem

2010

Settore MAT/05 - Analisi MatematicaMultiple solutions critical points theorems Sturm-Liouville equation
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Three weak solutions for elliptic Dirichlet system

2012

Settore MAT/05 - Analisi Matematicaelliptic system critical points
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Two non-zero solutions for Sturm–Liouville equations with mixed boundary conditions

2019

Abstract In this paper, we establish the existence of two non-zero solutions for a mixed boundary value problem with the Sturm–Liouville equation. The approach is based on a recent two critical point theorem.

Sturm–Liouville theoryCritical points01 natural sciencesCritical point (mathematics)Critical pointSturm–Liouville equationVariational methodsBoundary value problem0101 mathematicsBoundary value problem; Critical points; Mixed conditions; Sturm–Liouville equation; Variational methodsBoundary value problemMathematicsApplied Mathematics010102 general mathematicsMathematical analysisGeneral EngineeringVariational methodAnalysiGeneral MedicineMathematics::Spectral Theory010101 applied mathematicsComputational MathematicsMixed conditionGeneral Economics Econometrics and FinanceMixed conditionsAnalysis
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Ambiente e diritto penale: brevi riflessioni fra le modifiche agli artt.9 e 41 Cost. e le prospettive di riforma in ambito internazionale

2023

l contributo analizza l’impatto che il recente inserimento dell’ambiente in Costituzione può dispiegare in ambito penale, tanto rispetto all’ambiente quale oggetto della tutela penale, quanto sul versante della selezione dei modelli di illecito, soffermandosi in particolare sul problema delle possibili ricadute penalistiche del nuovo vincolo di solidarietà ecologica di tipo intergenerazionale. Seguendo il fil rouge del bene giuridico, la seconda parte del saggio ricostruisce invece i punti critici e le prospettive di sviluppo del diritto penale ambientale internazionale, alla luce della nozione di ambiente quale bene giuridico comune ed universale.

The paper analyses the impact that the recent inclusion of the environment in the Italian Constitution may have in the criminal law both with respect to the criminally relevant notion of the environment and with regard to the selection of the types of criminal offences. From this point of view the paper also takes into consideration the penal significance of the new bond of intergenerational ecological solidarity. Following the file rouge of the “bene giuridico” the second part of the essay is instead dedicated to the description of the critical points and the possible developments of international environmental criminal law in the light of a conception of the environment as a common and universal legal good.Settore IUS/17 - Diritto Penale
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Three solutions for a Neumann boundary value problem involving the p-Laplacian

2005

In this note we prove the existence of an open interval ]λ', λ"[ for each λ of which a Neumann boundary value problem involving the p-Laplacian and depending on λ admits at least three solutions. The result is based on a recent three critical points theorem.

Three solutionslcsh:Mathematicsp-LaplacianNeumann problemCritical pointslcsh:QA1-939Le Matematiche
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