Solvability of Implicit Fractional Order Integral Equation in <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" id="M1"> <a:msub> <a:mrow> <a:mi>ℓ</a:mi> </a:mrow> <a:mrow> <a:mi>p</a:mi> </a:mrow> </a:msub> <a:mfenced open="(" close=")"> <a:mrow> <a:mn>1</a:mn> <a:mo>≤</a:mo> <a:mi>p</a:mi> <a:mrow> <a:mo><</a:mo> </a:mrow> <a:mrow> <a:mo>∞</a:mo> </a:mrow> </a:mrow> </a:mfenced> </a:math> Space via Generalized Darbo’s Fixed Point Theorem
Inzamamul Haque, Javid Ali, M. Mursaleen
Abstract
We present a generalization of Darbo’s fixed point theorem in this article, and we use it to investigate the solvability of an infinite system of fractional order integral equations in <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" id="M2"> <a:msub> <a:mrow> <a:mi>ℓ</a:mi> </a:mrow> <a:mrow> <a:mi>p</a:mi> </a:mrow> </a:msub> <a:mfenced open="(" close=")"> <a:mrow> <a:mn>1</a:mn> <a:mo>≤</a:mo> <a:mi>p</a:mi> <a:mrow> <a:mo><</a:mo> </a:mrow> <a:mrow> <a:mo>∞</a:mo> </a:mrow> </a:mrow> </a:mfenced> </a:math> space. The fundamental tool in the presentation of our proofs is the measure of noncompactness <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" id="M3"> <e:mfenced open="(" close=")"> <e:mrow> <e:mtext>mnc</e:mtext> </e:mrow> </e:mfenced> </e:math> approach. The suggested fixed point theory has the advantage of relaxing the constraint of the domain of compactness, which is necessary for several fixed point theorems. To illustrate the obtained result in the sequence space, a numerical example is provided. Also, we have applied it to an integral equation involving fractional integral by another function that is the generalization of many fixed point theorems and fractional integral equations.