Displaying similar documents to “Existence and analytic approximation of solutions of Duffing type nonlinear integro-differential equation with integral boundary conditions.”

Fractional BVPs with strong time singularities and the limit properties of their solutions

Svatoslav Staněk (2014)

Open Mathematics

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In the first part, we investigate the singular BVP d d t c D α u + ( a / t ) c D α u = u , u(0) = A, u(1) = B, c D α u(t)|t=0 = 0, where is a continuous operator, α ∈ (0, 1) and a < 0. Here, c D denotes the Caputo fractional derivative. The existence result is proved by the Leray-Schauder nonlinear alternative. The second part establishes the relations between solutions of the sequence of problems d d t c D α n u + ( a / t ) c D α n u = f ( t , u , c D β n u ) , u(0) = A, u(1) = B, c D α n u ( t ) t = 0 = 0 where a < 0, 0 < β n ≤ α n < 1, limn→∞ β n = 1, and solutions of u″+(a/t)u′ = f(t,...

On some BK spaces.

De Malafosse, Bruno (2003)

International Journal of Mathematics and Mathematical Sciences

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Existence to singular boundary value problems with sign changing nonlinearities using an approximation method approach

Haishen Lü, Donal O&amp;#039;Regan, Ravi P. Agarwal (2007)

Applications of Mathematics

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This paper studies the existence of solutions to the singular boundary value problem - u ' ' = g ( t , u ) + h ( t , u ) , t ( 0 , 1 ) , u ( 0 ) = 0 = u ( 1 ) , where g ( 0 , 1 ) × ( 0 , ) and h ( 0 , 1 ) × [ 0 , ) [ 0 , ) are continuous. So our nonlinearity may be singular at t = 0 , 1 and u = 0 and, moreover, may change sign. The approach is based on an approximation method together with the theory of upper and lower solutions.