Compactness Conditions in the Study of Functional, Differential, and Integral Equations
Author(s) -
Józef Banaś,
Kishin Sadarangani
Publication year - 2013
Publication title -
abstract and applied analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.228
H-Index - 56
eISSN - 1687-0409
pISSN - 1085-3375
DOI - 10.1155/2013/819315
Subject(s) - mathematics , compact space , fixed point theorem , banach space , mathematical analysis , ordinary differential equation , integral equation , differential equation , pure mathematics
We discuss some existence results for various types of functional, differential, and integral equations which can be obtained with the help of argumentations based on compactnessconditions. We restrict ourselves to some classical compactness conditions appearing in fixed point theorems due to Schauder, Krasnosel’skii-Burton, and Schaefer. We present also the technique associated with measures of noncompactness and we illustrate its applicability in proving the solvability of some functional integral equations. Apart from this, we discuss the application of the mentioned technique to the theory of ordinary differential equations in Banach spaces
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