Results 61 to 70 of about 125 (84)

Global structure of positive and sign-changing periodic solutions for the equations with Minkowski-curvature operator

Advanced Nonlinear Studies
We show the existence of unbounded connected components of 2π-periodic positive solutions for the equations with one-dimensional Minkowski-curvature operator −u′1−u′2′=λa(x)f(u,u′),x∈R, $-{\left(\frac{{u}^{\prime }}{\sqrt{1-{u}^{\prime 2}}}\right ...
Ma Ruyun, Zhao Zhongzi, Su Xiaoxiao
doaj   +1 more source

Boundary value problems for integro-differential and singular higher-order differential equations

Open Mathematics
We investigate third-order strongly nonlinear differential equations of the type (Φ(k(t)u″(t)))′=f(t,u(t),u′(t),u″(t)),a.e. on[0,T],\left(\Phi \left(k\left(t){u}^{^{\prime\prime} }\left(t)))^{\prime} =f\left(t,u\left(t),u^{\prime} \left(t),{u}^{^{\prime ...
Anceschi Francesca, Calamai Alessandro, Marcelli Cristina, Papalini Francesca   +3 more
doaj   +1 more source

Beyond just "flattening the curve": Optimal control of epidemics with purely non-pharmaceutical interventions. [PDF]

J Math Ind, 2020
Kantner M, Koprucki T.
europepmc   +1 more source

Existence and multiplicity of positive solutions for multiparameter periodic systems

Open Mathematics
We deal with the existence and multiplicity of positive solutions for differential systems depending on two parameters, λ1,λ2{\lambda }_{1},{\lambda }_{2}, subjected to periodic boundary conditions.
Wei Liping, Dai Yongqiang, Su Shunchang
doaj   +1 more source

Non-homogeneous BVPs for second-order symmetric Hamiltonian systems

Open Mathematics
By making use of Bolle’s method, we show that the following problem has infinitely many solutions: x¨+V′(x)=0,x(0)cosα−x˙(0)sinα=x0,x(1)cosβ−x˙(1)sinβ=x1,\begin{array}{rcl}\ddot{x}+{V}^{^{\prime} }\left(x)& =& 0,\\ x\left(0)\cos \alpha -\dot{x}\left(0 ...
Chen Yingying, Dong Yujun, Wang Baiqian
doaj   +1 more source

New existence results for nonlinear delayed differential systems at resonance. [PDF]

J Inequal Appl, 2018
Chen R, Li X.
europepmc   +1 more source

A uniqueness method to a new Hadamard fractional differential system with four-point boundary conditions. [PDF]

J Inequal Appl, 2018
Zhai C, Wang W, Li H.
europepmc   +1 more source

Solvability of a boundary value problem at resonance. [PDF]

Springerplus, 2016
Guezane-Lakoud A, Khaldi R, Kılıçman A.   +2 more
europepmc   +1 more source

Two-point boundary value problems for the generalized Bagley-Torvik fractional differential equation

Open Mathematics, 2013
Staněk Svatoslav
doaj   +1 more source

On the existence of positive solutions for fractional differential inclusions at resonance. [PDF]

Springerplus, 2016
Hu L.
europepmc   +1 more source