Classification of Integro-Differential Equations
Integro-differential equations appear in many scientific applications, especially
when we convert initial value problems or boundary value problems
to integral equations. The integro-differential equations contain both integral
38 2 Introductory Concepts of Integral Equations
and differential operators. The derivatives of the unknown functions may appear
to any order. In classifying integro-differential equations, we will follow
the same category used before.