On a quasi-periodic Hopf bifurcation
On a reduction of nonlinear ordinary differential equations at an irregular type singularity
On a result of Etgen and Lewis
On a second-order differential inclusion with constraints.
On a simulation of the oscillation excited by a random force
On a singular multi-point third-order boundary value problem on the half-line
We establish not only sufficient but also necessary conditions for existence of solutions to a singular multi-point third-order boundary value problem posed on the half-line. Our existence results are based on the Krasnosel’skii fixed point theorem on cone compression and expansion. Nonexistence results are proved under suitable a priori estimates. The nonlinearity which satisfies upper and lower-homogeneity conditions in the space variables may be also singular at time . Two examples of applications...
On a singular perturbed differential delay equation
On a singular two-point boundary value problem for a nonlinear th-order differential equation with deviating arguments.
On a singulary perturbed, coupled elliptic-elliptic problem.
On a solution of nonlinear differential equation of Mikusinski operators W' (z) = -s... a (z) W... (z).
On A Solution Of The Nonlinear Differential Equation Of Mikusinski Operators W'(z)=-sαa(z)Wn+1(z)
On a spectral criterion for almost periodicity of solutions of periodic evolution equations.
On a stochastic SIR model
We consider a stochastic SIR system and we prove the existence, uniqueness and positivity of solution. Moreover the existence of an invariant measure under a suitable condition on the coefficients is studied.
On a structure of second order linear differential equations with periodic coefficients having the same discriminant
On a structure of the intersection of the set of dispersions of two second-order linear differential equations
On a successive approximation method of solving the Cauchy problem for systems of generalized ordinary differential equations.
On a superlinear Sturm-Liouville equation and a related bouncing problem.
On a Theorem by W. Hahn.
On a theorem of Browder
On a theorem of Brunovsky for periodic optimal control